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freebsd-dev/sys/dev/drm/drm_drv.h
Poul-Henning Kamp dc08ffec87 Device megapatch 4/6: 
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00

1146 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_version = D_VERSION,
.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_flags = D_TRACKCLOSE | D_NEEDGIANT,
#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:
DRM(ioremapfree)(map);
/* FALLTHROUGH */
case _DRM_FRAME_BUFFER:
#if __REALLY_HAVE_MTRR
if (map->mtrr) {
int __unused retcode;
retcode = DRM(mtrr_del)(map->offset,
map->size, DRM_MTRR_WC);
DRM_DEBUG("mtrr_del = %d", retcode);
}
#endif
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) {
if (DRM(mtrr_add)(dev->agp->info.ai_aperture_base,
dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
dev->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->mtrr) {
int __unused retcode;
retcode = DRM(mtrr_del)(dev->agp->info.ai_aperture_base,
dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
DRM_DEBUG("mtrr_del = %d", retcode);
}
#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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