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Current Path: /usr/src/sys/dev/drm2

📁 ..
📄 drm.h(25.25 KB)
📄 drmP.h(60.47 KB)
📄 drm_agpsupport.c(12.05 KB)
📄 drm_atomic.h(3.48 KB)
📄 drm_auth.c(6.12 KB)
📄 drm_buffer.c(5.02 KB)
📄 drm_buffer.h(4.55 KB)
📄 drm_bufs.c(43.77 KB)
📄 drm_context.c(12.07 KB)
📄 drm_core.h(1.48 KB)
📄 drm_crtc.c(97.29 KB)
📄 drm_crtc.h(38.9 KB)
📄 drm_crtc_helper.c(31.32 KB)
📄 drm_crtc_helper.h(6.37 KB)
📄 drm_dma.c(4.04 KB)
📄 drm_dp_helper.c(4.5 KB)
📄 drm_dp_helper.h(12.35 KB)
📄 drm_dp_iic_helper.c(6.54 KB)
📄 drm_drv.c(17.48 KB)
📄 drm_edid.c(51.99 KB)
📄 drm_edid.h(7.55 KB)
📄 drm_edid_modes.h(33.57 KB)
📄 drm_fb_helper.c(38.84 KB)
📄 drm_fb_helper.h(4.21 KB)
📄 drm_fixed.h(2.23 KB)
📄 drm_fops.c(15.14 KB)
📄 drm_fourcc.h(7.93 KB)
📄 drm_gem.c(11.57 KB)
📄 drm_gem_names.c(5.59 KB)
📄 drm_gem_names.h(2.46 KB)
📄 drm_global.c(3.16 KB)
📄 drm_global.h(2.01 KB)
📄 drm_hashtab.c(4.94 KB)
📄 drm_hashtab.h(2.57 KB)
📄 drm_ioc32.c(21.88 KB)
📄 drm_ioctl.c(8.81 KB)
📄 drm_irq.c(41.03 KB)
📄 drm_linux_list.h(7.88 KB)
📄 drm_linux_list_sort.c(2.53 KB)
📄 drm_lock.c(10.27 KB)
📄 drm_mem_util.h(1.77 KB)
📄 drm_memory.c(3.78 KB)
📄 drm_mm.c(19.2 KB)
📄 drm_mm.h(8.52 KB)
📄 drm_mode.h(12.16 KB)
📄 drm_modes.c(33.66 KB)
📄 drm_os_freebsd.c(11.36 KB)
📄 drm_os_freebsd.h(17.72 KB)
📄 drm_pci.c(12.35 KB)
📄 drm_pciids.h(70.22 KB)
📄 drm_platform.c(4.58 KB)
📄 drm_sarea.h(2.64 KB)
📄 drm_scatter.c(3.58 KB)
📄 drm_stub.c(12.1 KB)
📄 drm_sysctl.c(9.99 KB)
📄 drm_vm.c(4.18 KB)
📁 ttm

Editing: drm_global.c

/**************************************************************************
 *
 * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
 * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS 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: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <dev/drm2/drmP.h>
#include <dev/drm2/drm_global.h>

MALLOC_DEFINE(M_DRM_GLOBAL, "drm_global", "DRM Global Items");

struct drm_global_item {
	struct sx mutex;
	void *object;
	int refcount;
};

static struct drm_global_item glob[DRM_GLOBAL_NUM];

void drm_global_init(void)
{
	int i;

for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
		struct drm_global_item *item = &glob[i];
		sx_init(&item->mutex, "drmgi");
		item->object = NULL;
		item->refcount = 0;
	}
}

void drm_global_release(void)
{
	int i;
	for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
		struct drm_global_item *item = &glob[i];
		MPASS(item->object == NULL);
		MPASS(item->refcount == 0);
		sx_destroy(&item->mutex);
	}
}

int drm_global_item_ref(struct drm_global_reference *ref)
{
	int ret;
	struct drm_global_item *item = &glob[ref->global_type];
	void *object;

sx_xlock(&item->mutex);
	if (item->refcount == 0) {
		item->object = malloc(ref->size, M_DRM_GLOBAL,
		    M_NOWAIT | M_ZERO);
		if (unlikely(item->object == NULL)) {
			ret = -ENOMEM;
			goto out_err;
		}

ref->object = item->object;
		ret = ref->init(ref);
		if (unlikely(ret != 0))
			goto out_err;

}
	++item->refcount;
	ref->object = item->object;
	object = item->object;
	sx_xunlock(&item->mutex);
	return 0;
out_err:
	sx_xunlock(&item->mutex);
	item->object = NULL;
	return ret;
}
EXPORT_SYMBOL(drm_global_item_ref);

void drm_global_item_unref(struct drm_global_reference *ref)
{
	struct drm_global_item *item = &glob[ref->global_type];

sx_xlock(&item->mutex);
	MPASS(item->refcount != 0);
	MPASS(ref->object == item->object);
	if (--item->refcount == 0) {
		ref->release(ref);
		free(item->object, M_DRM_GLOBAL);
		item->object = NULL;
	}
	sx_xunlock(&item->mutex);
}
EXPORT_SYMBOL(drm_global_item_unref);

003 File Manager

Editing: drm_global.c

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