471 lines
14 KiB
C
471 lines
14 KiB
C
/**
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* \file drm_os_freebsd.h
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* OS-specific #defines for FreeBSD
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*
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* \author Eric Anholt <anholt@FreeBSD.org>
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*/
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/*
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* Copyright 2003 Eric Anholt
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/stat.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/fcntl.h>
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#include <sys/uio.h>
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#include <sys/filio.h>
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#include <sys/sysctl.h>
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#include <sys/bus.h>
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#include <sys/signalvar.h>
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#include <sys/poll.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_map.h>
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#include <vm/vm_param.h>
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#include <machine/param.h>
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#include <machine/pmap.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#if __FreeBSD_version >= 480000
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#include <sys/endian.h>
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#endif
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#include <sys/mman.h>
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#include <sys/rman.h>
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#include <sys/memrange.h>
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#if __FreeBSD_version >= 500000
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#include <dev/pci/pcivar.h>
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#include <sys/selinfo.h>
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#else
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#include <pci/pcivar.h>
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#include <sys/select.h>
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#endif
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#include <sys/bus.h>
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#if __FreeBSD_version >= 400005
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#include <sys/taskqueue.h>
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#endif
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#if __FreeBSD_version >= 500000
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#include <sys/mutex.h>
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#endif
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#if __FreeBSD_version >= 400006
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#define __REALLY_HAVE_AGP __HAVE_AGP
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#endif
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#ifdef __i386__
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#define __REALLY_HAVE_MTRR (__HAVE_MTRR) && (__FreeBSD_version >= 460000)
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#else
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#define __REALLY_HAVE_MTRR 0
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#endif
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#define __REALLY_HAVE_SG (__HAVE_SG)
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#if __REALLY_HAVE_AGP
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#include <pci/agpvar.h>
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#include <sys/agpio.h>
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#endif
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#include <opt_drm.h>
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#if DRM_DEBUG
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#undef DRM_DEBUG_CODE
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#define DRM_DEBUG_CODE 2
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#endif
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#undef DRM_DEBUG
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#if DRM_LINUX
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#include <sys/file.h>
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#include <sys/proc.h>
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#include <machine/../linux/linux.h>
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#include <machine/../linux/linux_proto.h>
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#endif
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#define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */
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#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
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#define DRM_DEV_UID 0
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#define DRM_DEV_GID 0
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#define CDEV_MAJOR 145
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#if __FreeBSD_version >= 500000
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#define DRM_CURPROC curthread
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#define DRM_STRUCTPROC struct thread
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#define DRM_SPINTYPE struct mtx
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#define DRM_SPININIT(l,name) mtx_init(&l, name, NULL, MTX_DEF)
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#define DRM_SPINUNINIT(l) mtx_destroy(&l)
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#define DRM_SPINLOCK(l) mtx_lock(l)
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#define DRM_SPINUNLOCK(u) mtx_unlock(u);
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#define DRM_CURRENTPID curthread->td_proc->p_pid
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#define DRM_LOCK() mtx_lock(&dev->dev_lock)
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#define DRM_UNLOCK() mtx_unlock(&dev->dev_lock)
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#else
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/* There is no need for locking on FreeBSD 4.x. Synchronization is handled by
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* the fact that there is no reentrancy of the kernel except for interrupt
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* handlers, and the interrupt handler synchronization is managed by spls.
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*/
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#define DRM_CURPROC curproc
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#define DRM_STRUCTPROC struct proc
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#define DRM_SPINTYPE
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#define DRM_SPININIT(l,name)
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#define DRM_SPINUNINIT(l)
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#define DRM_SPINLOCK(l)
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#define DRM_SPINUNLOCK(u)
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#define DRM_CURRENTPID curproc->p_pid
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#define DRM_LOCK()
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#define DRM_UNLOCK()
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#endif
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/* Currently our DRMFILE (filp) is a void * which is actually the pid
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* of the current process. It should be a per-open unique pointer, but
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* code for that is not yet written */
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#define DRMFILE void *
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#define DRM_IOCTL_ARGS dev_t kdev, u_long cmd, caddr_t data, int flags, DRM_STRUCTPROC *p, DRMFILE filp
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#define DRM_SUSER(p) suser(p)
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#define DRM_TASKQUEUE_ARGS void *arg, int pending
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#define DRM_IRQ_ARGS void *arg
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typedef void irqreturn_t;
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#define IRQ_HANDLED /* nothing */
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#define IRQ_NONE /* nothing */
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#define DRM_DEVICE drm_device_t *dev = kdev->si_drv1
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#define DRM_MALLOC(size) malloc( size, DRM(M_DRM), M_NOWAIT )
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#define DRM_FREE(pt,size) free( pt, DRM(M_DRM) )
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/* Read/write from bus space, with byteswapping to le if necessary */
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#define DRM_READ8(map, offset) *(volatile u_int8_t *) (((unsigned long)(map)->handle) + (offset))
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#define DRM_READ32(map, offset) *(volatile u_int32_t *)(((unsigned long)(map)->handle) + (offset))
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#define DRM_WRITE8(map, offset, val) *(volatile u_int8_t *) (((unsigned long)(map)->handle) + (offset)) = val
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#define DRM_WRITE32(map, offset, val) *(volatile u_int32_t *)(((unsigned long)(map)->handle) + (offset)) = val
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/*
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#define DRM_READ8(map, offset) bus_space_read_1( (map)->iot, (map)->ioh, (offset) )
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#define DRM_READ32(map, offset) bus_space_read_4( (map)->iot, (map)->ioh, (offset) )
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#define DRM_WRITE8(map, offset, val) bus_space_write_1( (map)->iot, (map)->ioh, (offset), (val) )
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#define DRM_WRITE32(map, offset, val) bus_space_write_4( (map)->iot, (map)->ioh, (offset), (val) )
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*/
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#define DRM_AGP_FIND_DEVICE() agp_find_device()
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#define DRM_ERR(v) v
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#define DRM_MTRR_WC MDF_WRITECOMBINE
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#define DRM_GET_PRIV_WITH_RETURN(_priv, _filp) \
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do { \
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if (_filp != (DRMFILE)DRM_CURRENTPID) { \
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DRM_ERROR("filp doesn't match curproc\n"); \
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return EINVAL; \
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} \
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DRM_LOCK(); \
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_priv = DRM(find_file_by_proc)(dev, DRM_CURPROC); \
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DRM_UNLOCK(); \
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if (_priv == NULL) { \
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DRM_ERROR("can't find authenticator\n"); \
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return EINVAL; \
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} \
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} while (0)
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#define LOCK_TEST_WITH_RETURN(dev, filp) \
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do { \
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if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) || \
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dev->lock.filp != filp) { \
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DRM_ERROR("%s called without lock held\n", \
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__FUNCTION__); \
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return EINVAL; \
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} \
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} while (0)
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#define DRM_UDELAY( udelay ) \
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do { \
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struct timeval tv1, tv2; \
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microtime(&tv1); \
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do { \
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microtime(&tv2); \
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} \
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while (((tv2.tv_sec-tv1.tv_sec)*1000000 + tv2.tv_usec - tv1.tv_usec) < udelay ); \
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} while (0)
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#define DRM_GETSAREA() \
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do { \
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drm_map_list_entry_t *listentry; \
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TAILQ_FOREACH(listentry, dev->maplist, link) { \
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drm_local_map_t *map = listentry->map; \
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if (map->type == _DRM_SHM && \
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map->flags & _DRM_CONTAINS_LOCK) { \
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dev_priv->sarea = map; \
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break; \
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} \
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} \
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} while (0)
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#define DRM_HZ hz
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#if defined(__FreeBSD__) && __FreeBSD_version > 500000
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#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
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for ( ret = 0 ; !ret && !(condition) ; ) { \
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mtx_lock(&dev->irq_lock); \
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if (!(condition)) \
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ret = msleep(&(queue), &dev->irq_lock, \
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PZERO | PCATCH, "drmwtq", (timeout)); \
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mtx_unlock(&dev->irq_lock); \
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}
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#else
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#define DRM_WAIT_ON( ret, queue, timeout, condition ) \
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for ( ret = 0 ; !ret && !(condition) ; ) { \
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int s = spldrm(); \
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if (!(condition)) \
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ret = tsleep( &(queue), PZERO | PCATCH, \
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"drmwtq", (timeout) ); \
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splx(s); \
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}
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#endif
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#define DRM_WAKEUP( queue ) wakeup( queue )
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#define DRM_WAKEUP_INT( queue ) wakeup( queue )
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#define DRM_INIT_WAITQUEUE( queue ) do {} while (0)
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#define DRM_COPY_TO_USER_IOCTL(user, kern, size) \
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if ( IOCPARM_LEN(cmd) != size) \
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return EINVAL; \
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*user = kern;
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#define DRM_COPY_FROM_USER_IOCTL(kern, user, size) \
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if ( IOCPARM_LEN(cmd) != size) \
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return EINVAL; \
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kern = *user;
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#define DRM_COPY_TO_USER(user, kern, size) \
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copyout(kern, user, size)
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#define DRM_COPY_FROM_USER(kern, user, size) \
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copyin(user, kern, size)
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/* Macros for userspace access with checking readability once */
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/* FIXME: can't find equivalent functionality for nocheck yet.
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* It'll be slower than linux, but should be correct.
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*/
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#define DRM_VERIFYAREA_READ( uaddr, size ) \
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(!useracc((caddr_t)uaddr, size, VM_PROT_READ))
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#define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3) \
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copyin(arg2, arg1, arg3)
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#define DRM_GET_USER_UNCHECKED(val, uaddr) \
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((val) = fuword(uaddr), 0)
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#define DRM_PUT_USER_UNCHECKED(val, uaddr) \
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suword(uaddr, val)
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/* DRM_READMEMORYBARRIER() prevents reordering of reads.
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* DRM_WRITEMEMORYBARRIER() prevents reordering of writes.
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* DRM_MEMORYBARRIER() prevents reordering of reads and writes.
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*/
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#if defined(__i386__)
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#define DRM_READMEMORYBARRIER() __asm __volatile( \
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"lock; addl $0,0(%%esp)" : : : "memory");
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#define DRM_WRITEMEMORYBARRIER() __asm __volatile("" : : : "memory");
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#define DRM_MEMORYBARRIER() __asm __volatile( \
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"lock; addl $0,0(%%esp)" : : : "memory");
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#elif defined(__alpha__)
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#define DRM_READMEMORYBARRIER() alpha_mb();
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#define DRM_WRITEMEMORYBARRIER() alpha_wmb();
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#define DRM_MEMORYBARRIER() alpha_mb();
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#endif
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#define PAGE_ALIGN(addr) round_page(addr)
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#ifndef M_WAITOK /* M_WAITOK (=0) name removed in -current */
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#define M_WAITOK 0
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#endif
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#define malloctype DRM(M_DRM)
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/* The macros conflicted in the MALLOC_DEFINE */
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MALLOC_DECLARE(malloctype);
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#undef malloctype
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#if __FreeBSD_version >= 480000
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#define cpu_to_le32(x) htole32(x)
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#define le32_to_cpu(x) le32toh(x)
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#else
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#define cpu_to_le32(x) (x)
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#define le32_to_cpu(x) (x)
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#endif
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typedef unsigned long dma_addr_t;
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typedef u_int32_t atomic_t;
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typedef u_int32_t u32;
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typedef u_int16_t u16;
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typedef u_int8_t u8;
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#define atomic_set(p, v) (*(p) = (v))
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#define atomic_read(p) (*(p))
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#define atomic_inc(p) atomic_add_int(p, 1)
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#define atomic_dec(p) atomic_subtract_int(p, 1)
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#define atomic_add(n, p) atomic_add_int(p, n)
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#define atomic_sub(n, p) atomic_subtract_int(p, n)
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/* Fake this */
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#if __FreeBSD_version < 500000
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/* The extra atomic functions from 5.0 haven't been merged to 4.x */
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static __inline int
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atomic_cmpset_int(volatile u_int *dst, u_int exp, u_int src)
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{
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int res = exp;
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__asm __volatile (
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" lock ; "
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" cmpxchgl %1,%2 ; "
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" setz %%al ; "
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" movzbl %%al,%0 ; "
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"1: "
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"# atomic_cmpset_int"
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: "+a" (res) /* 0 (result) */
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: "r" (src), /* 1 */
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"m" (*(dst)) /* 2 */
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: "memory");
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return (res);
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}
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#endif
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static __inline atomic_t
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test_and_set_bit(int b, volatile void *p)
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{
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int s = splhigh();
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unsigned int m = 1<<b;
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unsigned int r = *(volatile int *)p & m;
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*(volatile int *)p |= m;
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splx(s);
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return r;
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}
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static __inline void
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clear_bit(int b, volatile void *p)
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{
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atomic_clear_int(((volatile int *)p) + (b >> 5), 1 << (b & 0x1f));
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}
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static __inline void
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set_bit(int b, volatile void *p)
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{
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atomic_set_int(((volatile int *)p) + (b >> 5), 1 << (b & 0x1f));
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}
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static __inline int
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test_bit(int b, volatile void *p)
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{
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return ((volatile int *)p)[b >> 5] & (1 << (b & 0x1f));
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}
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static __inline int
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find_first_zero_bit(volatile void *p, int max)
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{
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int b;
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for (b = 0; b < max; b += 32) {
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if (((volatile int *)p)[b >> 5] != ~0) {
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for (;;) {
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if ((((volatile int *)p)[b >> 5] & (1 << (b & 0x1f))) == 0)
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return b;
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b++;
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}
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}
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}
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return max;
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}
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#define spldrm() spltty()
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/*
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* Fake out the module macros for versions of FreeBSD where they don't
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* exist.
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*/
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#if (__FreeBSD_version < 500002 && __FreeBSD_version > 500000) || __FreeBSD_version < 420000
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#define MODULE_VERSION(a,b) struct __hack
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#define MODULE_DEPEND(a,b,c,d,e) struct __hack
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#endif
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/* Redefinitions to make templating easy */
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#define wait_queue_head_t atomic_t
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#define agp_memory void
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#define jiffies ticks
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/* Macros to make printf easier */
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#define DRM_ERROR(fmt, arg...) \
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printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \
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DRM_CURRENTPID, __func__ , ## arg)
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#define DRM_MEM_ERROR(area, fmt, arg...) \
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printf("error: [" DRM_NAME ":pid%d:%s:%s] *ERROR* " fmt, \
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DRM_CURRENTPID , __func__, DRM(mem_stats)[area].name , ##arg)
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#define DRM_INFO(fmt, arg...) printf("info: [" DRM_NAME "] " fmt , ## arg)
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#if DRM_DEBUG_CODE
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#define DRM_DEBUG(fmt, arg...) \
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do { \
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if (DRM(flags) & DRM_FLAG_DEBUG) \
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printf("[" DRM_NAME ":pid%d:%s] " fmt, \
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DRM_CURRENTPID, __func__ , ## arg); \
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} while (0)
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#else
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#define DRM_DEBUG(fmt, arg...) do { } while (0)
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#endif
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#if (__FreeBSD_version >= 500000) || ((__FreeBSD_version < 500000) && (__FreeBSD_version >= 410002))
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#define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS)
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#else
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#define DRM_SYSCTL_HANDLER_ARGS SYSCTL_HANDLER_ARGS
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#endif
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#define DRM_FIND_MAP(dest, o) \
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do { \
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drm_map_list_entry_t *listentry; \
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TAILQ_FOREACH(listentry, dev->maplist, link) { \
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if ( listentry->map->offset == o ) { \
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dest = listentry->map; \
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break; \
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} \
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} \
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} while (0)
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/* Internal functions */
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/* drm_drv.h */
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extern d_ioctl_t DRM(ioctl);
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extern d_open_t DRM(open);
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extern d_close_t DRM(close);
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extern d_read_t DRM(read);
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extern d_poll_t DRM(poll);
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extern d_mmap_t DRM(mmap);
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extern int DRM(open_helper)(dev_t kdev, int flags, int fmt,
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DRM_STRUCTPROC *p, drm_device_t *dev);
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extern drm_file_t *DRM(find_file_by_proc)(drm_device_t *dev,
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DRM_STRUCTPROC *p);
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/* sysctl support (drm_sysctl.h) */
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extern int DRM(sysctl_init)(drm_device_t *dev);
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extern int DRM(sysctl_cleanup)(drm_device_t *dev);
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/* Memory info sysctl (drm_memory_debug.h) */
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#ifdef DEBUG_MEMORY
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extern int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS;
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#endif
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