drm/bsd-core/drm_drv.c

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/* drm_drv.h -- Generic driver template -*- linux-c -*-
* Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
*/
/*-
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* 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>
*
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*/
#include "drmP.h"
#include "drm.h"
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int drm_debug_flag = 0;
static int drm_init(device_t nbdev);
static void drm_cleanup(drm_device_t *dev);
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#ifdef __FreeBSD__
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#define DRIVER_SOFTC(unit) \
((drm_device_t *)devclass_get_softc(drm_devclass, unit))
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MODULE_VERSION(drm, 1);
MODULE_DEPEND(drm, agp, 1, 1, 1);
MODULE_DEPEND(drm, pci, 1, 1, 1);
#if __FreeBSD_version > 502127
MODULE_DEPEND(drm, mem, 1, 1, 1);
#endif
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#endif /* __FreeBSD__ */
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#define DRIVER_SOFTC(unit) \
((drm_device_t *)device_lookup(&drm_cd, unit))
#endif /* __NetBSD__ || __OpenBSD__ */
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static drm_ioctl_desc_t drm_ioctls[256] = {
[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 },
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_by_busid, 0, 1 },
[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_ioctl, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { drm_rmmap_ioctl, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { drm_setsareactx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { drm_getsareactx, 1, 0 },
[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 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { drm_addbufs_ioctl, 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 },
[DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { drm_dma, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { drm_control, 1, 1 },
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[DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire_ioctl, 1, 1 },
Adds support for PCI cards to MGA DRM This patch adds serveral new ioctls and a new query to get_param query to support PCI MGA cards. Two ioctls were added to implement interrupt based waiting. With this change, the client-side driver no longer needs to map the primary DMA region or the MMIO region. Previously, end-of-frame waiting was done by busy waiting in the client-side driver until one of the MMIO registers (the current DMA pointer) matched a pointer to the end of primary DMA space. By using interrupts, the busy waiting and the extra mappings are removed. A third ioctl was added to bootstrap DMA. This ioctl, which is used by the X-server, moves a *LOT* of code from the X-server into the kernel. This allows the kernel to do whatever needs to be done to setup DMA buffers. The entire process and the locations of the buffers are hidden from user-mode. Additionally, a get_param query was added to differentiate between G4x0 cards and G550 cards. A gap was left in the numbering sequence so that, if needed, G450 cards could be distinguished from G400 cards. According to Ville Syrjälä, the G4x0 cards and the G550 cards handle anisotropic filtering differently. This seems the most compatible way to let the client-side driver know which card it's own. Doing this very small change now eliminates the need to bump the DRM minor version twice. http://marc.theaimsgroup.com/?l=dri-devel&m=106625815319773&w=2 A number of ioctl handlers in linux-core were also modified so that they could be called in-kernel. In these cases, the in-kernel callable version kept the existing name (e.g., drm_agp_acquire) and the ioctl handler added _ioctl to the name (e.g., drm_agp_acquire_ioctl). This patch also replaces the drm_agp_do_release function with drm_agp_release. drm_agp_release (drm_core_agp_release in the previous patch) is very similar to drm_agp_do_release, and I saw no reason to have both. This commit *breaks the build* on BSD. Eric said that he would make the required updates to the BSD side soon. Xorg bug: 3259 Reviewed by: Eric Anholt
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[DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release_ioctl, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable_ioctl, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info_ioctl, 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 },
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[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { drm_sg_alloc, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { drm_sg_free, 1, 1 },
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[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { drm_wait_vblank, 0, 0 },
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};
const char *drm_find_description(int vendor, int device, drm_pci_id_list_t *idlist);
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#ifdef __FreeBSD__
static struct cdevsw drm_cdevsw = {
#if __FreeBSD_version >= 502103
.d_version = D_VERSION,
#endif
.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 = "drm",
#if __FreeBSD_version >= 502103
.d_flags = D_TRACKCLOSE | D_NEEDGIANT,
#else
.d_maj = 145,
.d_flags = D_TRACKCLOSE,
#endif
#if __FreeBSD_version < 500000
.d_bmaj = -1
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#endif
};
int drm_probe(device_t dev, drm_pci_id_list_t *idlist)
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{
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const char *s = NULL;
int vendor, device;
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vendor = pci_get_vendor(dev);
device = pci_get_device(dev);
s = drm_find_description(vendor, device, idlist);
if (s != NULL) {
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device_set_desc(dev, s);
return 0;
}
return ENXIO;
}
int drm_attach(device_t dev, drm_pci_id_list_t *idlist)
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{
return drm_init(dev);
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}
int drm_detach(device_t dev)
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{
drm_cleanup(device_get_softc(dev));
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return 0;
}
#ifndef DRM_DEV_NAME
#define DRM_DEV_NAME "drm"
#endif
devclass_t drm_devclass;
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#elif defined(__NetBSD__) || defined(__OpenBSD__)
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static struct cdevsw drm_cdevsw = {
drm_open,
drm_close,
drm_read,
nowrite,
drm_ioctl,
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nostop,
notty,
drm_poll,
drm_mmap,
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nokqfilter,
D_TTY
};
int drm_refcnt = 0;
#if defined(__NetBSD__) && __NetBSD_Version__ >= 106080000
MOD_DEV("drm", DRIVER_NAME, NULL, -1, &drm_cdevsw, CDEV_MAJOR);
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#else
MOD_DEV("drm", LM_DT_CHAR, CDEV_MAJOR, &drm_cdevsw);
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#endif
int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver);
static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd);
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int drm_modprobe(void);
int drm_probe(struct pci_attach_args *pa);
void drm_attach(struct pci_attach_args *pa, dev_t kdev);
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int drm_lkmentry(struct lkm_table *lkmtp, int cmd, int ver) {
DISPATCH(lkmtp, cmd, ver, drm_lkmhandle, drm_lkmhandle, drm_lkmhandle);
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}
static int drm_lkmhandle(struct lkm_table *lkmtp, int cmd)
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{
int error = 0;
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switch(cmd) {
case LKM_E_LOAD:
if (lkmexists(lkmtp))
return EEXIST;
if(drm_modprobe())
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return 0;
return 1;
case LKM_E_UNLOAD:
if (drm_refcnt > 0)
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return (EBUSY);
break;
case LKM_E_STAT:
break;
default:
error = EIO;
break;
}
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return error;
}
int drm_modprobe(void)
{
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struct pci_attach_args pa;
int error;
error = pci_find_device(&pa, drm_probe, idlist);
if (error != 0)
drm_attach(&pa, 0);
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return error;
}
int drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t idlist)
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{
const char *desc;
desc = drm_find_description(PCI_VENDOR(pa->pa_id),
PCI_PRODUCT(pa->pa_id), idlist);
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if (desc != NULL) {
return 1;
}
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return 0;
}
void drm_attach(struct pci_attach_args *pa, dev_t kdev,
drm_pci_id_list_t *idlist)
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{
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int i;
drm_device_t *dev;
config_makeroom(kdev, &drm_cd);
drm_cd.cd_devs[(kdev)] = malloc(sizeof(drm_device_t), M_DRM, M_WAITOK);
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dev = DRIVER_SOFTC(kdev);
memset(dev, 0, sizeof(drm_device_t));
memcpy(&dev->pa, pa, sizeof(dev->pa));
dev->irq = pa->pa_intrline;
dev->pci_domain = 0;
dev->pci_bus = pa->pa_bus;
dev->pci_slot = pa->pa_device;
dev->pci_func = pa->pa_function;
dev->dma_tag = pa->pa_dmat;
DRM_INFO("%s", drm_find_description(PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id), idlist));
drm_init(dev);
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}
int drm_detach(struct device *self, int flags)
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{
drm_cleanup((drm_device_t *)self);
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return 0;
}
int drm_activate(struct device *self, enum devact act)
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{
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
break;
case DVACT_DEACTIVATE:
/* FIXME */
break;
}
return (0);
}
#endif /* __NetBSD__ || __OpenBSD__ */
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const char *drm_find_description(int vendor, int device, drm_pci_id_list_t *idlist) {
int i = 0;
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for (i = 0; idlist[i].vendor != 0; i++) {
if ((idlist[i].vendor == vendor) &&
(idlist[i].device == device)) {
return idlist[i].name;
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}
}
return NULL;
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}
/* Initialize the DRM on first open. */
static int drm_setup(drm_device_t *dev)
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{
int i;
DRM_SPINLOCK_ASSERT(&dev->dev_lock);
if (dev->presetup)
dev->presetup(dev);
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dev->buf_use = 0;
if (dev->use_dma) {
i = drm_dma_setup(dev);
if (i != 0)
return i;
}
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dev->counters = 6;
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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;
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;
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dev->context_flag = 0;
dev->last_context = 0;
dev->if_version = 0;
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#ifdef __FreeBSD__
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dev->buf_sigio = NULL;
#elif defined(__NetBSD__) || defined(__OpenBSD__)
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dev->buf_pgid = 0;
#endif
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DRM_DEBUG( "\n" );
if (dev->postsetup)
dev->postsetup(dev);
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return 0;
}
/* Free resources associated with the DRM on the last close. */
static int drm_takedown(drm_device_t *dev)
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{
drm_magic_entry_t *pt, *next;
drm_local_map_t *map, *mapsave;
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int i;
DRM_SPINLOCK_ASSERT(&dev->dev_lock);
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DRM_DEBUG( "\n" );
if (dev->pretakedown != NULL)
dev->pretakedown(dev);
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if (dev->irq_enabled)
drm_irq_uninstall(dev);
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if ( dev->unique ) {
free(dev->unique, M_DRM);
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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;
free(pt, M_DRM);
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}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* 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. */
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for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
nexte = entry->next;
if ( entry->bound )
drm_agp_unbind_memory(entry->handle);
drm_agp_free_memory(entry->handle);
free(entry, M_DRM);
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}
dev->agp->memory = NULL;
if (dev->agp->acquired)
drm_agp_release(dev);
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dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
if (dev->sg != NULL) {
drm_sg_cleanup(dev->sg);
dev->sg = NULL;
}
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TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
drm_rmmap(dev, map);
}
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drm_dma_takedown(dev);
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if ( dev->lock.hw_lock ) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.filp = NULL;
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DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
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}
return 0;
}
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/* 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.
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*/
static int drm_init(device_t nbdev)
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{
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int unit;
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drm_device_t *dev;
int retcode;
DRM_DEBUG( "\n" );
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#ifdef __FreeBSD__
unit = device_get_unit(nbdev);
dev = device_get_softc(nbdev);
if (!strcmp(device_get_name(nbdev), "drmsub"))
dev->device = device_get_parent(nbdev);
else
dev->device = nbdev;
dev->devnode = make_dev(&drm_cdevsw,
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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__) || defined(__OpenBSD__)
dev = nbdev;
unit = minor(dev->device.dv_unit);
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#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);
TAILQ_INIT(&dev->maplist);
drm_mem_init();
#ifdef __FreeBSD__
drm_sysctl_init(dev);
#endif
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TAILQ_INIT(&dev->files);
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if (dev->preinit != NULL) {
retcode = dev->preinit(dev, 0);
if (retcode != 0)
goto error;
}
if (dev->use_agp) {
if (drm_device_is_agp(dev))
dev->agp = drm_agp_init();
if (dev->require_agp && dev->agp == NULL) {
DRM_ERROR("Card isn't AGP, or couldn't initialize "
"AGP.\n");
retcode = DRM_ERR(ENOMEM);
goto error;
}
if (dev->agp != NULL) {
if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
dev->agp->mtrr = 1;
}
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}
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retcode = drm_ctxbitmap_init(dev);
if (retcode != 0) {
DRM_ERROR("Cannot allocate memory for context bitmap.\n");
goto error;
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}
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DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d\n",
dev->driver_name,
dev->driver_major,
dev->driver_minor,
dev->driver_patchlevel,
dev->driver_date,
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unit );
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if (dev->postinit != NULL)
dev->postinit(dev, 0);
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return 0;
error:
#ifdef __FreeBSD__
drm_sysctl_cleanup(dev);
#endif
DRM_LOCK();
drm_takedown(dev);
DRM_UNLOCK();
#ifdef __FreeBSD__
destroy_dev(dev->devnode);
#if __FreeBSD_version >= 500000
mtx_destroy(&dev->dev_lock);
#endif
#endif
return retcode;
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}
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/* 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
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*/
static void drm_cleanup(drm_device_t *dev)
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{
DRM_DEBUG( "\n" );
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#ifdef __FreeBSD__
drm_sysctl_cleanup(dev);
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destroy_dev(dev->devnode);
#endif
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drm_ctxbitmap_cleanup(dev);
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);
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}
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DRM_LOCK();
drm_takedown(dev);
DRM_UNLOCK();
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if ( dev->agp ) {
drm_agp_uninit();
free(dev->agp, M_DRM);
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dev->agp = NULL;
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}
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if (dev->postcleanup != NULL)
dev->postcleanup(dev);
drm_mem_uninit();
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
mtx_destroy(&dev->dev_lock);
#endif
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}
int drm_version(DRM_IOCTL_ARGS)
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{
DRM_DEVICE;
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drm_version_t version;
int len;
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DRM_COPY_FROM_USER_IOCTL( version, (drm_version_t *)data, sizeof(version) );
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#define DRM_COPY( name, value ) \
len = strlen( value ); \
if ( len > name##_len ) len = name##_len; \
name##_len = strlen( value ); \
if ( len && name ) { \
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if ( DRM_COPY_TO_USER( name, value, len ) ) \
return DRM_ERR(EFAULT); \
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}
version.version_major = dev->driver_major;
version.version_minor = dev->driver_minor;
version.version_patchlevel = dev->driver_patchlevel;
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DRM_COPY(version.name, dev->driver_name);
DRM_COPY(version.date, dev->driver_date);
DRM_COPY(version.desc, dev->driver_desc);
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DRM_COPY_TO_USER_IOCTL( (drm_version_t *)data, version, sizeof(version) );
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return 0;
}
int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
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{
drm_device_t *dev = NULL;
int retcode = 0;
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dev = DRIVER_SOFTC(minor(kdev));
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DRM_DEBUG( "open_count = %d\n", dev->open_count );
retcode = drm_open_helper(kdev, flags, fmt, p, dev);
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if ( !retcode ) {
atomic_inc( &dev->counts[_DRM_STAT_OPENS] );
DRM_LOCK();
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#ifdef __FreeBSD__
device_busy(dev->device);
#endif
if ( !dev->open_count++ )
retcode = drm_setup(dev);
DRM_UNLOCK();
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}
return retcode;
}
int drm_close(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
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{
drm_file_t *priv;
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DRM_DEVICE;
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int retcode = 0;
DRMFILE filp = (void *)(uintptr_t)(DRM_CURRENTPID);
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DRM_DEBUG( "open_count = %d\n", dev->open_count );
DRM_LOCK();
priv = drm_find_file_by_proc(dev, p);
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if (!priv) {
DRM_UNLOCK();
DRM_ERROR("can't find authenticator\n");
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return EINVAL;
}
if (dev->prerelease != NULL)
dev->prerelease(dev, filp);
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/* ========================================================
* Begin inline drm_release
*/
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#ifdef __FreeBSD__
DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
DRM_CURRENTPID, (long)dev->device, dev->open_count );
#elif defined(__NetBSD__) || defined(__OpenBSD__)
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DRM_DEBUG( "pid = %d, device = 0x%lx, open_count = %d\n",
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DRM_CURRENTPID, (long)&dev->device, dev->open_count);
#endif
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if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
&& dev->lock.filp == filp) {
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DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
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DRM_CURRENTPID,
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_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
if (dev->release != NULL)
dev->release(dev, filp);
drm_lock_free(dev, &dev->lock.hw_lock->lock,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
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/* FIXME: may require heavy-handed reset of
hardware at this point, possibly
processed via a callback to the X
server. */
} else if (dev->release != NULL && dev->lock.hw_lock != NULL) {
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/* The lock is required to reclaim buffers */
for (;;) {
if ( !dev->lock.hw_lock ) {
/* Device has been unregistered */
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retcode = DRM_ERR(EINTR);
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break;
}
if (drm_lock_take(&dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
dev->lock.filp = filp;
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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
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retcode = tsleep((void *)&dev->lock.lock_queue,
PZERO | PCATCH, "drmlk2", 0);
#endif
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if (retcode)
break;
}
if (retcode == 0) {
dev->release(dev, filp);
drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT);
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}
}
if (dev->use_dma)
drm_reclaim_buffers(dev, (void *)(uintptr_t)priv->pid);
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#if defined (__FreeBSD__) && (__FreeBSD_version >= 500000)
funsetown(&dev->buf_sigio);
#elif defined(__FreeBSD__)
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funsetown(dev->buf_sigio);
#elif defined(__NetBSD__) || defined(__OpenBSD__)
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dev->buf_pgid = 0;
#endif /* __NetBSD__ || __OpenBSD__ */
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if (--priv->refs == 0) {
if (dev->free_filp_priv != NULL)
dev->free_filp_priv(dev, priv);
TAILQ_REMOVE(&dev->files, priv, link);
free(priv, M_DRM);
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}
/* ========================================================
* End inline drm_release
*/
atomic_inc( &dev->counts[_DRM_STAT_CLOSES] );
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#ifdef __FreeBSD__
device_unbusy(dev->device);
#endif
if (--dev->open_count == 0) {
retcode = drm_takedown(dev);
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}
DRM_UNLOCK();
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return retcode;
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}
/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
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*/
int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
DRM_STRUCTPROC *p)
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{
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DRM_DEVICE;
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int retcode = 0;
drm_ioctl_desc_t *ioctl;
int (*func)(DRM_IOCTL_ARGS);
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int nr = DRM_IOCTL_NR(cmd);
int is_driver_ioctl = 0;
drm_file_t *priv;
DRMFILE filp = (DRMFILE)(uintptr_t)DRM_CURRENTPID;
DRM_LOCK();
priv = drm_find_file_by_proc(dev, p);
DRM_UNLOCK();
if (priv == NULL) {
DRM_ERROR("can't find authenticator\n");
return EINVAL;
}
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atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
++priv->ioctl_count;
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#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__) || defined(__OpenBSD__)
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DRM_DEBUG( "pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
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DRM_CURRENTPID, cmd, nr, (long)&dev->device, priv->authenticated );
#endif
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switch (cmd) {
case FIONBIO:
case FIOASYNC:
return 0;
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#ifdef __FreeBSD__
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case FIOSETOWN:
return fsetown(*(int *)data, &dev->buf_sigio);
case FIOGETOWN:
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#if (__FreeBSD_version >= 500000)
*(int *) data = fgetown(&dev->buf_sigio);
#else
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*(int *) data = fgetown(dev->buf_sigio);
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#endif
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return 0;
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#endif /* __FreeBSD__ */
#if defined(__NetBSD__) || defined(__OpenBSD__)
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case TIOCSPGRP:
dev->buf_pgid = *(int *)data;
return 0;
case TIOCGPGRP:
*(int *)data = dev->buf_pgid;
return 0;
#endif /* __NetBSD__ */
2003-02-21 16:23:09 -07:00
}
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if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
return EINVAL;
}
ioctl = &drm_ioctls[nr];
/* It's not a core DRM ioctl, try driver-specific. */
if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
/* The array entries begin at DRM_COMMAND_BASE ioctl nr */
nr -= DRM_COMMAND_BASE;
if (nr > dev->max_driver_ioctl) {
DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
nr, dev->max_driver_ioctl);
return EINVAL;
}
ioctl = &dev->driver_ioctls[nr];
is_driver_ioctl = 1;
}
func = ioctl->func;
if (func == NULL) {
DRM_DEBUG( "no function\n" );
return EINVAL;
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}
if ((ioctl->root_only && DRM_SUSER(p)) || (ioctl->auth_needed &&
!priv->authenticated))
return EACCES;
if (is_driver_ioctl)
DRM_LOCK();
retcode = func(kdev, cmd, data, flags, p, filp);
if (is_driver_ioctl)
DRM_UNLOCK();
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if (retcode != 0)
DRM_DEBUG(" returning %d\n", retcode);
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return DRM_ERR(retcode);
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}
#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};
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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
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static int
drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
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{
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;
2002-01-27 11:23:04 -07:00
}
#endif /* DRM_LINUX */