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freebsd-nq/sys/dev/drm/drm_drv.h
Eric Anholt 81dc97109d Update from DRI CVS. Includes locking fixes (including PR 59202), changes for 
Radeon IGP support (still lacking PCI IDs), and DRM interface 1.2 updates which
include finally tying the DRM instances to specific devices rather than relying
on the X Server.
2003-11-12 20:56:30 +00:00

1148 lines
28 KiB
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/* drm_drv.h -- Generic driver template -*- linux-c -*-
* Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
*
* Copyright 1999, 2000 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>
*
* $FreeBSD$
*/
/*
* To use this template, you must at least define the following (samples
* given for the MGA driver):
*
* #define DRIVER_AUTHOR "VA Linux Systems, Inc."
*
* #define DRIVER_NAME "mga"
* #define DRIVER_DESC "Matrox G200/G400"
* #define DRIVER_DATE "20001127"
*
* #define DRIVER_MAJOR 2
* #define DRIVER_MINOR 0
* #define DRIVER_PATCHLEVEL 2
*
* #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls )
*
* #define DRM(x) mga_##x
*/
#ifndef __MUST_HAVE_AGP
#define __MUST_HAVE_AGP 0
#endif
#ifndef __HAVE_CTX_BITMAP
#define __HAVE_CTX_BITMAP 0
#endif
#ifndef __HAVE_IRQ
#define __HAVE_IRQ 0
#endif
#ifndef __HAVE_DMA_QUEUE
#define __HAVE_DMA_QUEUE 0
#endif
#ifndef __HAVE_DMA_SCHEDULE
#define __HAVE_DMA_SCHEDULE 0
#endif
#ifndef __HAVE_DMA_QUIESCENT
#define __HAVE_DMA_QUIESCENT 0
#endif
#ifndef __HAVE_RELEASE
#define __HAVE_RELEASE 0
#endif
#ifndef __HAVE_COUNTERS
#define __HAVE_COUNTERS 0
#endif
#ifndef __HAVE_SG
#define __HAVE_SG 0
#endif
#ifndef DRIVER_PREINIT
#define DRIVER_PREINIT()
#endif
#ifndef DRIVER_POSTINIT
#define DRIVER_POSTINIT()
#endif
#ifndef DRIVER_PRERELEASE
#define DRIVER_PRERELEASE()
#endif
#ifndef DRIVER_PRETAKEDOWN
#define DRIVER_PRETAKEDOWN()
#endif
#ifndef DRIVER_POSTCLEANUP
#define DRIVER_POSTCLEANUP()
#endif
#ifndef DRIVER_PRESETUP
#define DRIVER_PRESETUP()
#endif
#ifndef DRIVER_POSTSETUP
#define DRIVER_POSTSETUP()
#endif
#ifndef DRIVER_IOCTLS
#define DRIVER_IOCTLS
#endif
#ifndef DRIVER_OPEN_HELPER
#define DRIVER_OPEN_HELPER( priv, dev )
#endif
#ifndef DRIVER_FOPS
#endif
#if 1 && DRM_DEBUG_CODE
int DRM(flags) = DRM_FLAG_DEBUG;
#else
int DRM(flags) = 0;
#endif
static int DRM(init)(device_t nbdev);
static void DRM(cleanup)(drm_device_t *dev);
#ifdef __FreeBSD__
#define DRIVER_SOFTC(unit) \
((drm_device_t *) devclass_get_softc(DRM(devclass), unit))
#if __REALLY_HAVE_AGP
MODULE_DEPEND(DRIVER_NAME, agp, 1, 1, 1);
#endif
#endif /* __FreeBSD__ */
#ifdef __NetBSD__
#define DRIVER_SOFTC(unit) \
((drm_device_t *) device_lookup(&DRM(cd), unit))
#endif /* __NetBSD__ */
static drm_ioctl_desc_t DRM(ioctls)[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { DRM(version), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { DRM(getunique), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { DRM(getmagic), 0, 0 },
#if __HAVE_IRQ
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { DRM(irq_by_busid), 0, 1 },
#endif
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { DRM(getmap), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { DRM(getclient), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { DRM(getstats), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = { DRM(setversion), 0, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { DRM(setunique), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { DRM(noop), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { DRM(noop), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { DRM(authmagic), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { DRM(addmap), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { DRM(rmmap), 1, 0 },
#if __HAVE_CTX_BITMAP
[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 },
#endif
[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { DRM(addctx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { DRM(rmctx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { DRM(modctx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { DRM(getctx), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { DRM(switchctx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { DRM(newctx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { DRM(resctx), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { DRM(adddraw), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { DRM(rmdraw), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { DRM(lock), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { DRM(unlock), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { DRM(noop), 1, 0 },
#if __HAVE_DMA
[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { DRM(addbufs), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { DRM(markbufs), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { DRM(infobufs), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { DRM(mapbufs), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { DRM(freebufs), 1, 0 },
/* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
#endif
#if __HAVE_IRQ || __HAVE_DMA
[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { DRM(control), 1, 1 },
#endif
#if __REALLY_HAVE_AGP
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { DRM(agp_acquire), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { DRM(agp_release), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { DRM(agp_enable), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { DRM(agp_info), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { DRM(agp_alloc), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { DRM(agp_free), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { DRM(agp_bind), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { DRM(agp_unbind), 1, 1 },
#endif
#if __HAVE_SG
[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { DRM(sg_alloc), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { DRM(sg_free), 1, 1 },
#endif
#if __HAVE_VBL_IRQ
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { DRM(wait_vblank), 0, 0 },
#endif
DRIVER_IOCTLS
};
#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( DRM(ioctls) )
const char *DRM(find_description)(int vendor, int device);
#ifdef __FreeBSD__
static struct cdevsw DRM(cdevsw) = {
.d_open = DRM( open ),
.d_close = DRM( close ),
.d_read = DRM( read ),
.d_ioctl = DRM( ioctl ),
.d_poll = DRM( poll ),
.d_mmap = DRM( mmap ),
.d_name = DRIVER_NAME,
.d_maj = CDEV_MAJOR,
.d_flags = D_TTY | D_TRACKCLOSE,
#if __FreeBSD_version < 500000
.d_bmaj = -1
#endif
};
static drm_pci_id_list_t DRM(pciidlist)[] = {
DRIVER_PCI_IDS
};
static int DRM(probe)(device_t dev)
{
const char *s = NULL;
int pciid, vendor, device;
/* XXX: Cope with agp bridge device? */
if (!strcmp(device_get_name(dev), "drmsub"))
pciid = pci_get_devid(device_get_parent(dev));
else
pciid = pci_get_devid(dev);
vendor = (pciid & 0x0000ffff);
device = (pciid & 0xffff0000) >> 16;
s = DRM(find_description)(vendor, device);
if (s != NULL) {
device_set_desc(dev, s);
return 0;
}
return ENXIO;
}
static int DRM(attach)(device_t dev)
{
return DRM(init)(dev);
}
static int DRM(detach)(device_t dev)
{
DRM(cleanup)(device_get_softc(dev));
return 0;
}
static device_method_t DRM(methods)[] = {
/* Device interface */
DEVMETHOD(device_probe, DRM(probe)),
DEVMETHOD(device_attach, DRM(attach)),
DEVMETHOD(device_detach, DRM(detach)),
{ 0, 0 }
};
static driver_t DRM(driver) = {
"drm",
DRM(methods),
sizeof(drm_device_t),
};
static devclass_t DRM(devclass);
#elif defined(__NetBSD__)
static struct cdevsw DRM(cdevsw) = {
DRM(open),
DRM(close),
DRM(read),
nowrite,
DRM(ioctl),
nostop,
notty,
DRM(poll),
DRM(mmap),
nokqfilter,
D_TTY
};
int DRM(refcnt) = 0;
#if __NetBSD_Version__ >= 106080000
MOD_DEV( DRIVER_NAME, DRIVER_NAME, NULL, -1, &DRM(cdevsw), CDEV_MAJOR);
#else
MOD_DEV( DRIVER_NAME, LM_DT_CHAR, CDEV_MAJOR, &DRM(cdevsw) );
#endif
int DRM(lkmentry)(struct lkm_table *lkmtp, int cmd, int ver);
static int DRM(lkmhandle)(struct lkm_table *lkmtp, int cmd);
int DRM(modprobe)();
int DRM(probe)(struct pci_attach_args *pa);
void DRM(attach)(struct pci_attach_args *pa, dev_t kdev);
int DRM(lkmentry)(struct lkm_table *lkmtp, int cmd, int ver) {
DISPATCH(lkmtp, cmd, ver, DRM(lkmhandle), DRM(lkmhandle), DRM(lkmhandle));
}
static int DRM(lkmhandle)(struct lkm_table *lkmtp, int cmd)
{
int j, error = 0;
#if defined(__NetBSD__) && (__NetBSD_Version__ > 106080000)
struct lkm_dev *args = lkmtp->private.lkm_dev;
#endif
switch(cmd) {
case LKM_E_LOAD:
if (lkmexists(lkmtp))
return EEXIST;
if(DRM(modprobe)())
return 0;
return 1;
case LKM_E_UNLOAD:
if (DRM(refcnt) > 0)
return (EBUSY);
break;
case LKM_E_STAT:
break;
default:
error = EIO;
break;
}
return error;
}
int DRM(modprobe)() {
struct pci_attach_args pa;
int error = 0;
if((error = pci_find_device(&pa, DRM(probe))) != 0)
DRM(attach)(&pa, 0);
return error;
}
int DRM(probe)(struct pci_attach_args *pa)
{
const char *desc;
desc = DRM(find_description)(PCI_VENDOR(pa->pa_id),
PCI_PRODUCT(pa->pa_id));
if (desc != NULL) {
return 1;
}
return 0;
}
void DRM(attach)(struct pci_attach_args *pa, dev_t kdev)
{
int i;
drm_device_t *dev;
config_makeroom(kdev, &DRM(cd));
DRM(cd).cd_devs[(kdev)] = DRM(alloc)(sizeof(drm_device_t),
DRM_MEM_DRIVER);
dev = DRIVER_SOFTC(kdev);
memset(dev, 0, sizeof(drm_device_t));
memcpy(&dev->pa, pa, sizeof(dev->pa));
DRM_INFO("%s", DRM(find_description)(PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id)));
DRM(init)(dev);
}
int DRM(detach)(struct device *self, int flags)
{
DRM(cleanup)((drm_device_t *)self);
return 0;
}
int DRM(activate)(struct device *self, enum devact act)
{
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
break;
case DVACT_DEACTIVATE:
/* FIXME */
break;
}
return (0);
}
#endif /* __NetBSD__ */
const char *DRM(find_description)(int vendor, int device) {
int i = 0;
for (i = 0; DRM(pciidlist)[i].vendor != 0; i++) {
if ((DRM(pciidlist)[i].vendor == vendor) &&
(DRM(pciidlist)[i].device == device)) {
return DRM(pciidlist)[i].name;
}
}
return NULL;
}
/* Initialize the DRM on first open. */
static int DRM(setup)( drm_device_t *dev )
{
int i;
DRM_SPINLOCK_ASSERT(&dev->dev_lock);
DRIVER_PRESETUP();
dev->buf_use = 0;
#if __HAVE_DMA
i = DRM(dma_setup)( dev );
if ( i != 0 )
return i;
#endif
dev->counters = 6 + __HAVE_COUNTERS;
dev->types[0] = _DRM_STAT_LOCK;
dev->types[1] = _DRM_STAT_OPENS;
dev->types[2] = _DRM_STAT_CLOSES;
dev->types[3] = _DRM_STAT_IOCTLS;
dev->types[4] = _DRM_STAT_LOCKS;
dev->types[5] = _DRM_STAT_UNLOCKS;
#ifdef __HAVE_COUNTER6
dev->types[6] = __HAVE_COUNTER6;
#endif
#ifdef __HAVE_COUNTER7
dev->types[7] = __HAVE_COUNTER7;
#endif
#ifdef __HAVE_COUNTER8
dev->types[8] = __HAVE_COUNTER8;
#endif
#ifdef __HAVE_COUNTER9
dev->types[9] = __HAVE_COUNTER9;
#endif
#ifdef __HAVE_COUNTER10
dev->types[10] = __HAVE_COUNTER10;
#endif
#ifdef __HAVE_COUNTER11
dev->types[11] = __HAVE_COUNTER11;
#endif
#ifdef __HAVE_COUNTER12
dev->types[12] = __HAVE_COUNTER12;
#endif
#ifdef __HAVE_COUNTER13
dev->types[13] = __HAVE_COUNTER13;
#endif
#ifdef __HAVE_COUNTER14
dev->types[14] = __HAVE_COUNTER14;
#endif
#ifdef __HAVE_COUNTER15
dev->types[14] = __HAVE_COUNTER14;
#endif
for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
atomic_set( &dev->counts[i], 0 );
for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
dev->magiclist[i].head = NULL;
dev->magiclist[i].tail = NULL;
}
dev->lock.hw_lock = NULL;
dev->lock.lock_queue = 0;
dev->irq_enabled = 0;
dev->context_flag = 0;
dev->last_context = 0;
dev->if_version = 0;
#ifdef __FreeBSD__
dev->buf_sigio = NULL;
#elif defined(__NetBSD__)
dev->buf_pgid = 0;
#endif
DRM_DEBUG( "\n" );
DRIVER_POSTSETUP();
return 0;
}
/* Free resources associated with the DRM on the last close. */
static int DRM(takedown)( drm_device_t *dev )
{
drm_magic_entry_t *pt, *next;
drm_local_map_t *map;
drm_map_list_entry_t *list;
int i;
DRM_SPINLOCK_ASSERT(&dev->dev_lock);
DRM_DEBUG( "\n" );
DRIVER_PRETAKEDOWN();
#if __HAVE_IRQ
if (dev->irq_enabled)
DRM(irq_uninstall)( dev );
#endif
if ( dev->unique ) {
DRM(free)( dev->unique, strlen( dev->unique ) + 1,
DRM_MEM_DRIVER );
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
next = pt->next;
DRM(free)( pt, sizeof(*pt), DRM_MEM_MAGIC );
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
#if __REALLY_HAVE_AGP
/* Clear AGP information */
if ( dev->agp ) {
drm_agp_mem_t *entry;
drm_agp_mem_t *nexte;
/* Remove AGP resources, but leave dev->agp
intact until DRM(cleanup) is called. */
for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
nexte = entry->next;
if ( entry->bound ) DRM(unbind_agp)( entry->handle );
DRM(free_agp)( entry->handle, entry->pages );
DRM(free)( entry, sizeof(*entry), DRM_MEM_AGPLISTS );
}
dev->agp->memory = NULL;
if ( dev->agp->acquired ) DRM(agp_do_release)();
dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
#endif
#if __REALLY_HAVE_SG
if (dev->sg != NULL) {
DRM(sg_cleanup)(dev->sg);
dev->sg = NULL;
}
#endif
if (dev->maplist != NULL) {
while ((list=TAILQ_FIRST(dev->maplist))) {
map = list->map;
switch ( map->type ) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
#if __REALLY_HAVE_MTRR
if ( map->mtrr >= 0 ) {
int __unused mtrr;
mtrr = DRM(mtrr_del)(map->offset,
map->size, DRM_MTRR_WC);
DRM_DEBUG("mtrr_del=%d\n", mtrr);
}
#endif
DRM(ioremapfree)( map );
break;
case _DRM_SHM:
DRM(free)(map->handle,
map->size,
DRM_MEM_SAREA);
break;
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
/* Do nothing here, because this is all
* handled in the AGP/GART/SG functions.
*/
break;
}
TAILQ_REMOVE(dev->maplist, list, link);
DRM(free)(list, sizeof(*list), DRM_MEM_MAPS);
DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
}
}
#if __HAVE_DMA
DRM(dma_takedown)( dev );
#endif
if ( dev->lock.hw_lock ) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.filp = NULL;
DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
}
return 0;
}
/* linux: drm_init is called via init_module at module load time, or via
* linux/init/main.c (this is not currently supported).
* bsd: drm_init is called via the attach function per device.
*/
static int DRM(init)( device_t nbdev )
{
int unit;
#ifdef __FreeBSD__
drm_device_t *dev;
#elif defined(__NetBSD__)
drm_device_t *dev = nbdev;
#endif
#if __HAVE_CTX_BITMAP
int retcode;
#endif
DRM_DEBUG( "\n" );
DRIVER_PREINIT();
#ifdef __FreeBSD__
unit = device_get_unit(nbdev);
dev = device_get_softc(nbdev);
memset( (void *)dev, 0, sizeof(*dev) );
if (!strcmp(device_get_name(nbdev), "drmsub"))
dev->device = device_get_parent(nbdev);
else
dev->device = nbdev;
dev->devnode = make_dev( &DRM(cdevsw),
unit,
DRM_DEV_UID,
DRM_DEV_GID,
DRM_DEV_MODE,
"dri/card%d", unit );
#if __FreeBSD_version >= 500000
mtx_init(&dev->dev_lock, "drm device", NULL, MTX_DEF);
#endif
#elif defined(__NetBSD__)
unit = minor(dev->device.dv_unit);
#endif
dev->irq = pci_get_irq(dev->device);
/* XXX Fix domain number (alpha hoses) */
dev->pci_domain = 0;
dev->pci_bus = pci_get_bus(dev->device);
dev->pci_slot = pci_get_slot(dev->device);
dev->pci_func = pci_get_function(dev->device);
dev->maplist = DRM(calloc)(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
if (dev->maplist == NULL) {
retcode = ENOMEM;
goto error;
}
TAILQ_INIT(dev->maplist);
dev->name = DRIVER_NAME;
DRM(mem_init)();
DRM(sysctl_init)(dev);
TAILQ_INIT(&dev->files);
#if __REALLY_HAVE_AGP
dev->agp = DRM(agp_init)();
#if __MUST_HAVE_AGP
if ( dev->agp == NULL ) {
DRM_ERROR( "Cannot initialize the agpgart module.\n" );
retcode = DRM_ERR(ENOMEM);
goto error;
}
#endif /* __MUST_HAVE_AGP */
#if __REALLY_HAVE_MTRR
if (dev->agp) {
int retcode;
retcode = DRM(mtrr_add)(dev->agp->info.ai_aperture_base,
dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
if (retcode == 0)
dev->agp->agp_mtrr=1;
}
#endif /* __REALLY_HAVE_MTRR */
#endif /* __REALLY_HAVE_AGP */
#if __HAVE_CTX_BITMAP
retcode = DRM(ctxbitmap_init)( dev );
if (retcode != 0) {
DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
goto error;
}
#endif
DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
DRIVER_NAME,
DRIVER_MAJOR,
DRIVER_MINOR,
DRIVER_PATCHLEVEL,
DRIVER_DATE,
unit );
DRIVER_POSTINIT();
return 0;
error:
DRM(sysctl_cleanup)(dev);
DRM_LOCK();
DRM(takedown)(dev);
DRM_UNLOCK();
#ifdef __FreeBSD__
destroy_dev(dev->devnode);
#if __FreeBSD_version >= 500000
mtx_destroy(&dev->dev_lock);
#endif
#endif
DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
return retcode;
}
/* linux: drm_cleanup is called via cleanup_module at module unload time.
* bsd: drm_cleanup is called per device at module unload time.
* FIXME: NetBSD
*/
static void DRM(cleanup)(drm_device_t *dev)
{
DRM_DEBUG( "\n" );
DRM(sysctl_cleanup)( dev );
#ifdef __FreeBSD__
destroy_dev(dev->devnode);
#endif
#if __HAVE_CTX_BITMAP
DRM(ctxbitmap_cleanup)( dev );
#endif
#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
if ( dev->agp && dev->agp->agp_mtrr >= 0) {
int __unused mtrr;
mtrr = DRM(mtrr_del)(dev->agp->info.ai_aperture_base,
dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
DRM_DEBUG("mtrr_del=%d\n", mtrr);
}
#endif
DRM_LOCK();
DRM(takedown)( dev );
DRM_UNLOCK();
#if __REALLY_HAVE_AGP
if ( dev->agp ) {
DRM(agp_uninit)();
DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
dev->agp = NULL;
}
#endif
DRIVER_POSTCLEANUP();
DRM(mem_uninit)();
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
mtx_destroy(&dev->dev_lock);
#endif
DRM(free)(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
}
int DRM(version)( DRM_IOCTL_ARGS )
{
drm_version_t version;
int len;
DRM_COPY_FROM_USER_IOCTL( version, (drm_version_t *)data, sizeof(version) );
#define DRM_COPY( name, value ) \
len = strlen( value ); \
if ( len > name##_len ) len = name##_len; \
name##_len = strlen( value ); \
if ( len && name ) { \
if ( DRM_COPY_TO_USER( name, value, len ) ) \
return DRM_ERR(EFAULT); \
}
version.version_major = DRIVER_MAJOR;
version.version_minor = DRIVER_MINOR;
version.version_patchlevel = DRIVER_PATCHLEVEL;
DRM_COPY( version.name, DRIVER_NAME );
DRM_COPY( version.date, DRIVER_DATE );
DRM_COPY( version.desc, DRIVER_DESC );
DRM_COPY_TO_USER_IOCTL( (drm_version_t *)data, version, sizeof(version) );
return 0;
}
int DRM(open)(dev_t kdev, int flags, int fmt, DRM_STRUCTPROC *p)
{
drm_device_t *dev = NULL;
int retcode = 0;
dev = DRIVER_SOFTC(minor(kdev));
DRM_DEBUG( "open_count = %d\n", dev->open_count );
retcode = DRM(open_helper)(kdev, flags, fmt, p, dev);
if ( !retcode ) {
atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
DRM_LOCK();
#ifdef __FreeBSD__
device_busy(dev->device);
#endif
if ( !dev->open_count++ )
retcode = DRM(setup)( dev );
DRM_UNLOCK();
}
return retcode;
}
int DRM(close)(dev_t kdev, int flags, int fmt, DRM_STRUCTPROC *p)
{
drm_file_t *priv;
DRM_DEVICE;
int retcode = 0;
DRMFILE filp = (void *)(DRM_CURRENTPID);
DRM_DEBUG( "open_count = %d\n", dev->open_count );
DRM_LOCK();
priv = DRM(find_file_by_proc)(dev, p);
if (!priv) {
DRM_UNLOCK();
DRM_DEBUG("can't find authenticator\n");
return EINVAL;
}
DRIVER_PRERELEASE();
/* ========================================================
* Begin inline drm_release
*/
#ifdef __FreeBSD__
DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
DRM_CURRENTPID, (long)dev->device, dev->open_count );
#elif defined(__NetBSD__)
DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
DRM_CURRENTPID, (long)&dev->device, dev->open_count);
#endif
if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
&& dev->lock.filp == filp) {
DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
DRM_CURRENTPID,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
#if __HAVE_RELEASE
DRIVER_RELEASE();
#endif
DRM(lock_free)(dev,
&dev->lock.hw_lock->lock,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
/* FIXME: may require heavy-handed reset of
hardware at this point, possibly
processed via a callback to the X
server. */
}
#if __HAVE_RELEASE
else if ( dev->lock.hw_lock ) {
/* The lock is required to reclaim buffers */
for (;;) {
if ( !dev->lock.hw_lock ) {
/* Device has been unregistered */
retcode = DRM_ERR(EINTR);
break;
}
if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT ) ) {
dev->lock.pid = DRM_CURRENTPID;
dev->lock.lock_time = jiffies;
atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
break; /* Got lock */
}
/* Contention */
#if defined(__FreeBSD__) && __FreeBSD_version > 500000
retcode = msleep((void *)&dev->lock.lock_queue,
dev->dev_lock, PZERO | PCATCH, "drmlk2", 0);
#else
retcode = tsleep((void *)&dev->lock.lock_queue,
PZERO | PCATCH, "drmlk2", 0);
#endif
if (retcode)
break;
}
if (retcode == 0) {
DRIVER_RELEASE();
DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT );
}
}
#elif __HAVE_DMA
DRM(reclaim_buffers)( dev, (void *)priv->pid );
#endif
#if defined (__FreeBSD__) && (__FreeBSD_version >= 500000)
funsetown(&dev->buf_sigio);
#elif defined(__FreeBSD__)
funsetown(dev->buf_sigio);
#elif defined(__NetBSD__)
dev->buf_pgid = 0;
#endif /* __NetBSD__ */
if (--priv->refs == 0) {
TAILQ_REMOVE(&dev->files, priv, link);
DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
}
/* ========================================================
* End inline drm_release
*/
atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
#ifdef __FreeBSD__
device_unbusy(dev->device);
#endif
if (--dev->open_count == 0) {
retcode = DRM(takedown)(dev);
}
DRM_UNLOCK();
return retcode;
}
/* DRM(ioctl) is called whenever a process performs an ioctl on /dev/drm.
*/
int DRM(ioctl)(dev_t kdev, u_long cmd, caddr_t data, int flags,
DRM_STRUCTPROC *p)
{
DRM_DEVICE;
int retcode = 0;
drm_ioctl_desc_t *ioctl;
int (*func)(DRM_IOCTL_ARGS);
int nr = DRM_IOCTL_NR(cmd);
drm_file_t *priv;
DRM_GET_PRIV_WITH_RETURN(priv, (DRMFILE)DRM_CURRENTPID);
atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
++priv->ioctl_count;
#ifdef __FreeBSD__
DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
DRM_CURRENTPID, cmd, nr, (long)dev->device, priv->authenticated );
#elif defined(__NetBSD__)
DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
DRM_CURRENTPID, cmd, nr, (long)&dev->device, priv->authenticated );
#endif
switch (cmd) {
case FIONBIO:
case FIOASYNC:
return 0;
#ifdef __FreeBSD__
case FIOSETOWN:
return fsetown(*(int *)data, &dev->buf_sigio);
case FIOGETOWN:
#if (__FreeBSD_version >= 500000)
*(int *) data = fgetown(&dev->buf_sigio);
#else
*(int *) data = fgetown(dev->buf_sigio);
#endif
return 0;
#endif /* __FreeBSD__ */
#ifdef __NetBSD__
case TIOCSPGRP:
dev->buf_pgid = *(int *)data;
return 0;
case TIOCGPGRP:
*(int *)data = dev->buf_pgid;
return 0;
#endif /* __NetBSD__ */
}
if (nr >= DRIVER_IOCTL_COUNT || IOCGROUP(cmd) != DRM_IOCTL_BASE)
return EINVAL;
ioctl = &DRM(ioctls)[nr];
func = ioctl->func;
if (func == NULL) {
DRM_DEBUG( "no function\n" );
return EINVAL;
}
if ((ioctl->root_only && DRM_SUSER(p)) || (ioctl->auth_needed &&
!priv->authenticated))
return EACCES;
retcode = func(kdev, cmd, data, flags, p, (void *)DRM_CURRENTPID);
return DRM_ERR(retcode);
}
int DRM(lock)( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_lock_t lock;
int ret = 0;
DRM_COPY_FROM_USER_IOCTL( lock, (drm_lock_t *)data, sizeof(lock) );
if ( lock.context == DRM_KERNEL_CONTEXT ) {
DRM_ERROR( "Process %d using kernel context %d\n",
DRM_CURRENTPID, lock.context );
return DRM_ERR(EINVAL);
}
DRM_DEBUG( "%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
lock.context, DRM_CURRENTPID,
dev->lock.hw_lock->lock, lock.flags );
#if __HAVE_DMA_QUEUE
if ( lock.context < 0 )
return DRM_ERR(EINVAL);
#endif
DRM_LOCK();
for (;;) {
if (DRM(lock_take)(&dev->lock.hw_lock->lock, lock.context)) {
dev->lock.filp = (void *)DRM_CURRENTPID;
dev->lock.lock_time = jiffies;
atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
break; /* Got lock */
}
/* Contention */
#if defined(__FreeBSD__) && __FreeBSD_version > 500000
ret = msleep((void *)&dev->lock.lock_queue, &dev->dev_lock,
PZERO | PCATCH, "drmlk2", 0);
#else
ret = tsleep((void *)&dev->lock.lock_queue, PZERO | PCATCH,
"drmlk2", 0);
#endif
if (ret != 0)
break;
}
DRM_UNLOCK();
DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
if (ret != 0)
return ret;
/* XXX: Add signal blocking here */
#if __HAVE_DMA_QUIESCENT
if (lock.flags & _DRM_LOCK_QUIESCENT) {
DRIVER_DMA_QUIESCENT();
}
#endif
return 0;
}
int DRM(unlock)( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_lock_t lock;
DRM_COPY_FROM_USER_IOCTL( lock, (drm_lock_t *)data, sizeof(lock) ) ;
if ( lock.context == DRM_KERNEL_CONTEXT ) {
DRM_ERROR( "Process %d using kernel context %d\n",
DRM_CURRENTPID, lock.context );
return DRM_ERR(EINVAL);
}
atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
DRM_LOCK();
DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT );
#if __HAVE_DMA_SCHEDULE
DRM(dma_schedule)( dev, 1 );
#endif
if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT ) ) {
DRM_ERROR( "\n" );
}
DRM_UNLOCK();
return 0;
}
#if DRM_LINUX
#include <sys/sysproto.h>
MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
#define LINUX_IOCTL_DRM_MIN 0x6400
#define LINUX_IOCTL_DRM_MAX 0x64ff
static linux_ioctl_function_t DRM(linux_ioctl);
static struct linux_ioctl_handler DRM(handler) = {DRM(linux_ioctl),
LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
SYSINIT(DRM(register), SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_ioctl_register_handler, &DRM(handler));
SYSUNINIT(DRM(unregister), SI_SUB_KLD, SI_ORDER_MIDDLE,
linux_ioctl_unregister_handler, &DRM(handler));
/* The bits for in/out are switched on Linux */
#define LINUX_IOC_IN IOC_OUT
#define LINUX_IOC_OUT IOC_IN
static int
DRM(linux_ioctl)(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
{
int error;
int cmd = args->cmd;
args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
if (cmd & LINUX_IOC_IN)
args->cmd |= IOC_IN;
if (cmd & LINUX_IOC_OUT)
args->cmd |= IOC_OUT;
error = ioctl(p, (struct ioctl_args *)args);
return error;
}
#endif /* DRM_LINUX */
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