diff options
Diffstat (limited to 'bsd/tdfx')
| -rw-r--r-- | bsd/tdfx/Makefile | 15 | ||||
| -rw-r--r-- | bsd/tdfx/tdfx_context.c | 201 | ||||
| -rw-r--r-- | bsd/tdfx/tdfx_drv.c | 694 | ||||
| -rw-r--r-- | bsd/tdfx/tdfx_drv.h | 47 |
4 files changed, 957 insertions, 0 deletions
diff --git a/bsd/tdfx/Makefile b/bsd/tdfx/Makefile new file mode 100644 index 00000000..e0ff8ffa --- /dev/null +++ b/bsd/tdfx/Makefile @@ -0,0 +1,15 @@ +# $FreeBSD$ + +KMOD = tdfx +SRCS = tdfx_drv.c tdfx_context.c +SRCS += device_if.h bus_if.h pci_if.h +CFLAGS += ${DEBUG_FLAGS} -I.. +KERN = /usr/src/sys + +@: + ln -sf /sys @ + +machine: + ln -sf /sys/i386/include machine + +.include "/usr/src/sys/conf/kmod.mk" diff --git a/bsd/tdfx/tdfx_context.c b/bsd/tdfx/tdfx_context.c new file mode 100644 index 00000000..0aecf762 --- /dev/null +++ b/bsd/tdfx/tdfx_context.c @@ -0,0 +1,201 @@ +/* tdfx_context.c -- IOCTLs for tdfx contexts -*- c -*- + * Created: Thu Oct 7 10:50:22 1999 by faith@precisioninsight.com + * Revised: Sat Oct 9 23:39:56 1999 by faith@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * 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. + * + * $PI$ + * $XFree86$ + * + */ + +#include "drmP.h" +#include "tdfx_drv.h" + +extern drm_ctx_t tdfx_res_ctx; + +static int tdfx_alloc_queue(drm_device_t *dev) +{ + static int context = 0; + + return ++context; /* Should this reuse contexts in the future? */ +} + +int tdfx_context_switch(drm_device_t *dev, int old, int new) +{ + char buf[64]; + + atomic_inc(&dev->total_ctx); + + if (test_and_set_bit(0, &dev->context_flag)) { + DRM_ERROR("Reentering -- FIXME\n"); + return -EBUSY; + } + +#if DRM_DMA_HISTOGRAM + getnanotime(&dev->ctx_start); +#endif + + DRM_DEBUG("Context switch from %d to %d\n", old, new); + + if (new == dev->last_context) { + clear_bit(0, &dev->context_flag); + return 0; + } + + if (drm_flags & DRM_FLAG_NOCTX) { + tdfx_context_switch_complete(dev, new); + } else { + sprintf(buf, "C %d %d\n", old, new); + drm_write_string(dev, buf); + } + + return 0; +} + +int tdfx_context_switch_complete(drm_device_t *dev, int new) +{ + dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ + dev->last_switch = ticks; + + if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { + DRM_ERROR("Lock isn't held after context switch\n"); + } + + /* If a context switch is ever initiated + when the kernel holds the lock, release + that lock here. */ +#if DRM_DMA_HISTOGRAM + { + struct timespec ts; + getnanotime(&ts); + timespecsub(&ts, &dev->lck_start); + atomic_inc(&dev->histo.ctx[drm_histogram_slot(&ts)]); + } +#endif + clear_bit(0, &dev->context_flag); + wakeup(&dev->context_wait); + + return 0; +} + + +int +tdfx_resctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_ctx_res_t res; + drm_ctx_t ctx; + int i, error; + + DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS); + res = *(drm_ctx_res_t *) data; + if (res.count >= DRM_RESERVED_CONTEXTS) { + memset(&ctx, 0, sizeof(ctx)); + for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) { + ctx.handle = i; + error = copyout(&i, &res.contexts[i], sizeof(i)); + if (error) return error; + } + } + res.count = DRM_RESERVED_CONTEXTS; + *(drm_ctx_res_t *) data = res; + return 0; +} + + +int +tdfx_addctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + if ((ctx.handle = tdfx_alloc_queue(dev)) == DRM_KERNEL_CONTEXT) { + /* Skip kernel's context and get a new one. */ + ctx.handle = tdfx_alloc_queue(dev); + } + DRM_DEBUG("%d\n", ctx.handle); + *(drm_ctx_t *) data = ctx; + return 0; +} + +int +tdfx_modctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + if (ctx.flags==_DRM_CONTEXT_PRESERVED) + tdfx_res_ctx.handle=ctx.handle; + return 0; +} + +int +tdfx_getctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + /* This is 0, because we don't hanlde any context flags */ + ctx.flags = 0; + *(drm_ctx_t *) data = ctx; + return 0; +} + +int +tdfx_switchctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + DRM_DEBUG("%d\n", ctx.handle); + return tdfx_context_switch(dev, dev->last_context, ctx.handle); +} + +int +tdfx_newctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_device_t *dev = kdev->si_drv1; + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + DRM_DEBUG("%d\n", ctx.handle); + tdfx_context_switch_complete(dev, ctx.handle); + + return 0; +} + +int +tdfx_rmctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) +{ + drm_ctx_t ctx; + + ctx = *(drm_ctx_t *) data; + DRM_DEBUG("%d\n", ctx.handle); + /* This is currently a noop because we + don't reuse context values. Perhaps we + should? */ + + return 0; +} diff --git a/bsd/tdfx/tdfx_drv.c b/bsd/tdfx/tdfx_drv.c new file mode 100644 index 00000000..573cfcf1 --- /dev/null +++ b/bsd/tdfx/tdfx_drv.c @@ -0,0 +1,694 @@ +/* tdfx.c -- tdfx driver -*- c -*- + * Created: Thu Oct 7 10:38:32 1999 by faith@precisioninsight.com + * Revised: Tue Oct 12 08:51:35 1999 by faith@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * 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. + * + * $PI$ + * $XFree86$ + * + */ + +#include "drmP.h" +#include "tdfx_drv.h" + +#include <pci/pcivar.h> + +MODULE_DEPEND(tdfx, drm, 1, 1, 1); + +#define TDFX_NAME "tdfx" +#define TDFX_DESC "tdfx" +#define TDFX_DATE "19991009" +#define TDFX_MAJOR 0 +#define TDFX_MINOR 0 +#define TDFX_PATCHLEVEL 1 + +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; + } + + 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 }, +}; +#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; + } + + /* 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); + + device_unbusy(dev->device); + + 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); + + 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); + + 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"); + + device_busy(dev->device); + 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); + 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; +} diff --git a/bsd/tdfx/tdfx_drv.h b/bsd/tdfx/tdfx_drv.h new file mode 100644 index 00000000..213f8ef1 --- /dev/null +++ b/bsd/tdfx/tdfx_drv.h @@ -0,0 +1,47 @@ +/* tdfx_drv.h -- Private header for tdfx driver -*- c -*- + * Created: Thu Oct 7 10:40:04 1999 by faith@precisioninsight.com + * Revised: Sat Oct 9 23:38:19 1999 by faith@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * 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. + * + * $PI$ + * $XFree86$ + * + */ + +#ifndef _TDFX_DRV_H_ +#define _TDFX_DRV_H_ + + /* tdfx_context.c */ + +extern d_ioctl_t tdfx_resctx; +extern d_ioctl_t tdfx_addctx; +extern d_ioctl_t tdfx_modctx; +extern d_ioctl_t tdfx_getctx; +extern d_ioctl_t tdfx_switchctx; +extern d_ioctl_t tdfx_newctx; +extern d_ioctl_t tdfx_rmctx; + +extern int tdfx_context_switch(drm_device_t *dev, int old, int new); +extern int tdfx_context_switch_complete(drm_device_t *dev, int new); +#endif |