renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

diff options

author	Dave Airlie <airlied@linux.ie>	2004-07-25 05:52:22 +0000
committer	Dave Airlie <airlied@linux.ie>	2004-07-25 05:52:22 +0000
commit	1f132b7849c453d3aebd227866f743cbcf7f3881 (patch)
tree	71f900a3d76aa023d82b50b0e7ec3fb8f4cfcd62 /bsd-core/drmP.h
parent	c54ba5691a573ba273498217323f19c35b1637d8 (diff)

whitespace merge with kernel

Diffstat (limited to 'bsd-core/drmP.h')

0 files changed, 0 insertions, 0 deletions

/* tdfx.c -- tdfx driver -*- c -*- * Created: Thu Oct 7 10:38:32 1999 by faith@precisioninsight.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 * PRECISION INSIGHT 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> * Daryll Strauss <daryll@valinux.com> * */ #include "drmP.h" #include "tdfx_drv.h" #include <pci/pcivar.h> MODULE_DEPEND(tdfx, drm, 1, 1, 1); #ifdef DRM_AGP MODULE_DEPEND(tdfx, agp, 1, 1, 1); #endif #define TDFX_NAME "tdfx" #define TDFX_DESC "tdfx" #define TDFX_DATE "20000928" #define TDFX_MAJOR 1 #define TDFX_MINOR 0 #define TDFX_PATCHLEVEL 0 static int tdfx_init(device_t nbdev); static void tdfx_cleanup(device_t nbdev); drm_ctx_t tdfx_res_ctx; static int tdfx_probe(device_t dev) { const char *s = 0; switch (pci_get_devid(dev)) { case 0x0003121a: s = "3Dfx Voodoo Banshee graphics accelerator"; break; case 0x0005121a: s = "3Dfx Voodoo 3 graphics accelerator"; break; case 0x0009121a: s = "3Dfx Voodoo 5 graphics accelerator"; break; } if (s) { device_set_desc(dev, s); return 0; } return ENXIO; } static int tdfx_attach(device_t dev) { tdfx_init(dev); return 0; } static int tdfx_detach(device_t dev) { tdfx_cleanup(dev); return 0; } static device_method_t tdfx_methods[] = { /* Device interface */ DEVMETHOD(device_probe, tdfx_probe), DEVMETHOD(device_attach, tdfx_attach), DEVMETHOD(device_detach, tdfx_detach), { 0, 0 } }; static driver_t tdfx_driver = { "drm", tdfx_methods, sizeof(drm_device_t), }; static devclass_t tdfx_devclass; #define TDFX_SOFTC(unit) \ ((drm_device_t *) devclass_get_softc(tdfx_devclass, unit)) DRIVER_MODULE(if_tdfx, pci, tdfx_driver, tdfx_devclass, 0, 0); #define CDEV_MAJOR 145 /* tdfx_drv.c */ static d_open_t tdfx_open; static d_close_t tdfx_close; static d_ioctl_t tdfx_version; static d_ioctl_t tdfx_ioctl; static d_ioctl_t tdfx_lock; static d_ioctl_t tdfx_unlock; static struct cdevsw tdfx_cdevsw = { /* open */ tdfx_open, /* close */ tdfx_close, /* read */ drm_read, /* write */ drm_write, /* ioctl */ tdfx_ioctl, /* poll */ drm_poll, /* mmap */ drm_mmap, /* strategy */ nostrategy, /* name */ "tdfx", /* maj */ CDEV_MAJOR, /* dump */ nodump, /* psize */ nopsize, /* flags */ D_TTY | D_TRACKCLOSE, /* bmaj */ -1 }; static drm_ioctl_desc_t tdfx_ioctls[] = { [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { tdfx_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_busid, 0, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 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_ADD_CTX)] = { tdfx_addctx, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { tdfx_rmctx, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { tdfx_modctx, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { tdfx_getctx, 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { tdfx_switchctx, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { tdfx_newctx, 1, 1 }, [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { tdfx_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)] = { tdfx_lock, 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { tdfx_unlock, 1, 0 }, [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 }, #ifdef DRM_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, 1}, [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_unbind, 1, 1}, [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_bind, 1, 1}, #endif }; #define TDFX_IOCTL_COUNT DRM_ARRAY_SIZE(tdfx_ioctls) static int tdfx_setup(drm_device_t *dev) { int i; device_busy(dev->device); atomic_set(&dev->ioctl_count, 0); atomic_set(&dev->vma_count, 0); dev->buf_use = 0; atomic_set(&dev->buf_alloc, 0); atomic_set(&dev->total_open, 0); atomic_set(&dev->total_close, 0); atomic_set(&dev->total_ioctl, 0); atomic_set(&dev->total_irq, 0); atomic_set(&dev->total_ctx, 0); atomic_set(&dev->total_locks, 0); atomic_set(&dev->total_unlocks, 0); atomic_set(&dev->total_contends, 0); atomic_set(&dev->total_sleeps, 0); for (i = 0; i < DRM_HASH_SIZE; i++) { dev->magiclist[i].head = NULL; dev->magiclist[i].tail = NULL; } dev->maplist = NULL; dev->map_count = 0; dev->vmalist = NULL; dev->lock.hw_lock = NULL; dev->lock.lock_queue = 0; dev->queue_count = 0; dev->queue_reserved = 0; dev->queue_slots = 0; dev->queuelist = NULL; dev->irq = 0; dev->context_flag = 0; dev->interrupt_flag = 0; dev->dma = 0; dev->dma_flag = 0; dev->last_context = 0; dev->last_switch = 0; dev->last_checked = 0; callout_init(&dev->timer); dev->context_wait = 0; timespecclear(&dev->ctx_start); timespecclear(&dev->lck_start); dev->buf_rp = dev->buf; dev->buf_wp = dev->buf; dev->buf_end = dev->buf + DRM_BSZ; bzero(&dev->buf_sel, sizeof dev->buf_sel); dev->buf_sigio = NULL; dev->buf_readers = 0; dev->buf_writers = 0; dev->buf_selecting = 0; tdfx_res_ctx.handle=-1; DRM_DEBUG("\n"); /* The kernel's context could be created here, but is now created in drm_dma_enqueue. This is more resource-efficient for hardware that does not do DMA, but may mean that drm_select_queue fails between the time the interrupt is initialized and the time the queues are initialized. */ return 0; } static int tdfx_takedown(drm_device_t *dev) { int i; drm_magic_entry_t *pt, *next; drm_map_t *map; drm_vma_entry_t *vma, *vma_next; DRM_DEBUG("\n"); lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc); callout_stop(&dev->timer); if (dev->devname) { drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER); dev->devname = NULL; } 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; } #ifdef DRM_AGP /* Clear AGP information */ if (dev->agp) { drm_agp_mem_t *temp; drm_agp_mem_t *temp_next; temp = dev->agp->memory; while(temp != NULL) { temp_next = temp->next; drm_free_agp(temp->handle, temp->pages); drm_free(temp, sizeof(*temp), DRM_MEM_AGPLISTS); temp = temp_next; } if (dev->agp->acquired) agp_release(dev->agp->agpdev); drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS); dev->agp = NULL; } #endif /* Clear vma list (only built for debugging) */ if (dev->vmalist) { for (vma = dev->vmalist; vma; vma = vma_next) { vma_next = vma->next; drm_free(vma, sizeof(*vma), DRM_MEM_VMAS); } dev->vmalist = NULL; } /* Clear map area and mtrr information */ if (dev->maplist) { for (i = 0; i < dev->map_count; i++) { map = dev->maplist[i]; switch (map->type) { case _DRM_REGISTERS: case _DRM_FRAME_BUFFER: #ifdef CONFIG_MTRR if (map->mtrr >= 0) { int retcode; retcode = mtrr_del(map->mtrr, map->offset, map->size); DRM_DEBUG("mtrr_del = %d\n", retcode); } #endif drm_ioremapfree(map->handle, map->size); break; case _DRM_SHM: drm_free_pages((unsigned long)map->handle, drm_order(map->size) - PAGE_SHIFT, DRM_MEM_SAREA); break; case _DRM_AGP: break; /* XXX */ } drm_free(map, sizeof(*map), DRM_MEM_MAPS); } drm_free(dev->maplist, dev->map_count * sizeof(*dev->maplist), DRM_MEM_MAPS); dev->maplist = NULL; dev->map_count = 0; } if (dev->lock.hw_lock) { dev->lock.hw_lock = NULL; /* SHM removed */ dev->lock.pid = 0; wakeup(&dev->lock.lock_queue); } lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc); return 0; } /* tdfx_init is called via tdfx_attach at module load time, */ static int tdfx_init(device_t nbdev) { drm_device_t *dev = device_get_softc(nbdev); int retcode; DRM_DEBUG("\n"); memset((void *)dev, 0, sizeof(*dev)); simple_lock_init(&dev->count_lock); lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0); #if 0 drm_parse_options(tdfx); #endif dev->device = nbdev; dev->devnode = make_dev(&tdfx_cdevsw, device_get_unit(nbdev), DRM_DEV_UID, DRM_DEV_GID, DRM_DEV_MODE, TDFX_NAME); dev->name = TDFX_NAME; drm_mem_init(); drm_sysctl_init(dev); TAILQ_INIT(&dev->files); #ifdef DRM_AGP dev->agp = drm_agp_init(); #endif if((retcode = drm_ctxbitmap_init(dev))) { DRM_ERROR("Cannot allocate memory for context bitmap.\n"); drm_sysctl_cleanup(dev); tdfx_takedown(dev); return retcode; } DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", TDFX_NAME, TDFX_MAJOR, TDFX_MINOR, TDFX_PATCHLEVEL, TDFX_DATE, device_get_unit(nbdev)); return 0; } /* tdfx_cleanup is called via tdfx_detach at module unload time. */ static void tdfx_cleanup(device_t nbdev) { drm_device_t *dev = device_get_softc(nbdev); DRM_DEBUG("\n"); drm_sysctl_cleanup(dev); destroy_dev(dev->devnode); DRM_INFO("Module unloaded\n"); drm_ctxbitmap_cleanup(dev); tdfx_takedown(dev); } static int tdfx_version(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) { drm_version_t version; int len; version = *(drm_version_t *) data; #define DRM_COPY(name,value) \ len = strlen(value); \ if (len > name##_len) len = name##_len; \ name##_len = strlen(value); \ if (len && name) { \ int error = copyout(value, name, len); \ if (error) return error; \ } version.version_major = TDFX_MAJOR; version.version_minor = TDFX_MINOR; version.version_patchlevel = TDFX_PATCHLEVEL; DRM_COPY(version.name, TDFX_NAME); DRM_COPY(version.date, TDFX_DATE); DRM_COPY(version.desc, TDFX_DESC); *(drm_version_t *) data = version; return 0; } static int tdfx_open(dev_t kdev, int flags, int fmt, struct proc *p) { drm_device_t *dev = TDFX_SOFTC(minor(kdev)); int retcode = 0; DRM_DEBUG("open_count = %d\n", dev->open_count); device_busy(dev->device); if (!(retcode = drm_open_helper(kdev, flags, fmt, p, dev))) { atomic_inc(&dev->total_open); simple_lock(&dev->count_lock); if (!dev->open_count++) { simple_unlock(&dev->count_lock); retcode = tdfx_setup(dev); } simple_unlock(&dev->count_lock); } device_unbusy(dev->device); return retcode; } static int tdfx_close(dev_t kdev, int flags, int fmt, struct proc *p) { drm_device_t *dev = kdev->si_drv1; int retcode = 0; DRM_DEBUG("open_count = %d\n", dev->open_count); if (!(retcode = drm_close(kdev, flags, fmt, p))) { atomic_inc(&dev->total_close); simple_lock(&dev->count_lock); if (!--dev->open_count) { if (atomic_read(&dev->ioctl_count) || dev->blocked) { DRM_ERROR("Device busy: %d %d\n", atomic_read(&dev->ioctl_count), dev->blocked); simple_unlock(&dev->count_lock); return EBUSY; } simple_unlock(&dev->count_lock); device_unbusy(dev->device); return tdfx_takedown(dev); } simple_unlock(&dev->count_lock); } return retcode; } /* tdfx_ioctl is called whenever a process performs an ioctl on /dev/drm. */ static int tdfx_ioctl(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) { int nr = DRM_IOCTL_NR(cmd); drm_device_t *dev = kdev->si_drv1; drm_file_t *priv; int retcode = 0; drm_ioctl_desc_t *ioctl; d_ioctl_t *func; DRM_DEBUG("dev=%p\n", dev); priv = drm_find_file_by_proc(dev, p); if (!priv) { DRM_DEBUG("can't find authenticator\n"); return EINVAL; } atomic_inc(&dev->ioctl_count); atomic_inc(&dev->total_ioctl); ++priv->ioctl_count; DRM_DEBUG("pid = %d, cmd = 0x%02lx, nr = 0x%02x, auth = %d\n", p->p_pid, cmd, nr, priv->authenticated); switch (cmd) { case FIONBIO: atomic_dec(&dev->ioctl_count); return 0; case FIOASYNC: atomic_dec(&dev->ioctl_count); dev->flags |= FASYNC; return 0; case FIOSETOWN: atomic_dec(&dev->ioctl_count); return fsetown(*(int *)data, &dev->buf_sigio); case FIOGETOWN: atomic_dec(&dev->ioctl_count); *(int *) data = fgetown(dev->buf_sigio); return 0; } if (nr >= TDFX_IOCTL_COUNT) { retcode = EINVAL; } else { ioctl = &tdfx_ioctls[nr]; func = ioctl->func; if (!func) { DRM_DEBUG("no function\n"); retcode = EINVAL; } else if ((ioctl->root_only && suser(p)) || (ioctl->auth_needed && !priv->authenticated)) { retcode = EACCES; } else { retcode = (func)(kdev, cmd, data, flags, p); } } atomic_dec(&dev->ioctl_count); return retcode; } static int tdfx_lock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) { drm_device_t *dev = kdev->si_drv1; int ret = 0; drm_lock_t lock; #if DRM_DMA_HISTOGRAM getnanotime(&dev->lck_start); #endif lock = *(drm_lock_t *) data; if (lock.context == DRM_KERNEL_CONTEXT) { DRM_ERROR("Process %d using kernel context %d\n", p->p_pid, lock.context); return EINVAL; } DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n", lock.context, p->p_pid, dev->lock.hw_lock->lock, lock.flags); #if 0 /* dev->queue_count == 0 right now for tdfx. FIXME? */ if (lock.context < 0 || lock.context >= dev->queue_count) return EINVAL; #endif if (!ret) { #if 0 if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) != lock.context) { long j = ticks - dev->lock.lock_time; if (lock.context == tdfx_res_ctx.handle && j >= 0 && j < DRM_LOCK_SLICE) { /* Can't take lock if we just had it and there is contention. */ DRM_DEBUG("%d (pid %d) delayed j=%d dev=%d ticks=%d\n", lock.context, p->p_pid, j, dev->lock.lock_time, ticks); ret = tsleep(&never, PZERO|PCATCH, "drmlk1", DRM_LOCK_SLICE - j); if (ret) return ret; DRM_DEBUG("ticks=%d\n", ticks); } } #endif for (;;) { if (!dev->lock.hw_lock) { /* Device has been unregistered */ ret = EINTR; break; } if (drm_lock_take(&dev->lock.hw_lock->lock, lock.context)) { dev->lock.pid = p->p_pid; dev->lock.lock_time = ticks; atomic_inc(&dev->total_locks); break; /* Got lock */ } /* Contention */ atomic_inc(&dev->total_sleeps); ret = tsleep(&dev->lock.lock_queue, PZERO|PCATCH, "drmlk2", 0); if (ret) break; } } #if 0 if (!ret && dev->last_context != lock.context && lock.context != tdfx_res_ctx.handle && dev->last_context != tdfx_res_ctx.handle) { add_wait_queue(&dev->context_wait, &entry); current->state = TASK_INTERRUPTIBLE; /* PRE: dev->last_context != lock.context */ tdfx_context_switch(dev, dev->last_context, lock.context); /* POST: we will wait for the context switch and will dispatch on a later call when dev->last_context == lock.context NOTE WE HOLD THE LOCK THROUGHOUT THIS TIME! */ current->policy |= SCHED_YIELD; schedule(); current->state = TASK_RUNNING; remove_wait_queue(&dev->context_wait, &entry); if (signal_pending(current)) { ret = EINTR; } else if (dev->last_context != lock.context) { DRM_ERROR("Context mismatch: %d %d\n", dev->last_context, lock.context); } } #endif if (!ret) { if (lock.flags & _DRM_LOCK_READY) { /* Wait for space in DMA/FIFO */ } if (lock.flags & _DRM_LOCK_QUIESCENT) { /* Make hardware quiescent */ #if 0 tdfx_quiescent(dev); #endif } } #if 0 DRM_ERROR("pid = %5d, old counter = %5ld\n", p->p_pid, current->counter); #endif #if 0 while (current->counter > 25) current->counter >>= 1; /* decrease time slice */ DRM_ERROR("pid = %5d, new counter = %5ld\n", p->p_pid, current->counter); #endif DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock"); #if DRM_DMA_HISTOGRAM { struct timespec ts; getnanotime(&ts); timespecsub(&ts, &dev->lck_start); atomic_inc(&dev->histo.lhld[drm_histogram_slot(&ts)]); } #endif return ret; } static int tdfx_unlock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) { drm_device_t *dev = kdev->si_drv1; drm_lock_t lock; lock = *(drm_lock_t *) data; if (lock.context == DRM_KERNEL_CONTEXT) { DRM_ERROR("Process %d using kernel context %d\n", p->p_pid, lock.context); return EINVAL; } DRM_DEBUG("%d frees lock (%d holds)\n", lock.context, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); atomic_inc(&dev->total_unlocks); if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock)) atomic_inc(&dev->total_contends); drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT); /* FIXME: Try to send data to card here */ if (!dev->context_flag) { if (drm_lock_free(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT)) { DRM_ERROR("\n"); } } return 0; }


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