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Diffstat (limited to 'src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c')
-rw-r--r--src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
new file mode 100644
index 00000000000..e21c4c2627a
--- /dev/null
+++ b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
@@ -0,0 +1,312 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
+ * 2013 Red Hat, Inc.
+ *
+ * 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 VMWARE 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.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <xf86drm.h>
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_format.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_double_list.h"
+
+#include "state_tracker/sw_winsys.h"
+#include "state_tracker/drm_driver.h"
+
+#if 0
+#define DEBUG(msg, ...) fprintf(stderr, msg, __VA_ARGS__)
+#else
+#define DEBUG(msg, ...)
+#endif
+
+struct sw_winsys;
+
+struct sw_winsys *kms_dri_create_winsys(int fd);
+
+struct kms_sw_displaytarget
+{
+ enum pipe_format format;
+ unsigned width;
+ unsigned height;
+ unsigned stride;
+ unsigned size;
+
+ uint32_t handle;
+ void *mapped;
+
+ int ref_count;
+ struct list_head link;
+};
+
+struct kms_sw_winsys
+{
+ struct sw_winsys base;
+
+ int fd;
+ struct list_head bo_list;
+};
+
+static INLINE struct kms_sw_displaytarget *
+kms_sw_displaytarget( struct sw_displaytarget *dt )
+{
+ return (struct kms_sw_displaytarget *)dt;
+}
+
+static INLINE struct kms_sw_winsys *
+kms_sw_winsys( struct sw_winsys *ws )
+{
+ return (struct kms_sw_winsys *)ws;
+}
+
+
+static boolean
+kms_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format )
+{
+ /* TODO: check visuals or other sensible thing here */
+ return TRUE;
+}
+
+static struct sw_displaytarget *
+kms_sw_displaytarget_create(struct sw_winsys *ws,
+ unsigned tex_usage,
+ enum pipe_format format,
+ unsigned width, unsigned height,
+ unsigned alignment,
+ unsigned *stride)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt;
+ struct drm_mode_create_dumb create_req;
+ struct drm_mode_destroy_dumb destroy_req;
+ int ret;
+
+ kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget);
+ if(!kms_sw_dt)
+ goto no_dt;
+
+ kms_sw_dt->ref_count = 1;
+
+ kms_sw_dt->format = format;
+ kms_sw_dt->width = width;
+ kms_sw_dt->height = height;
+
+ create_req.bpp = 32;
+ create_req.width = width;
+ create_req.height = height;
+ create_req.handle = 0;
+ ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req);
+ if (ret)
+ goto free_bo;
+
+ kms_sw_dt->stride = create_req.pitch;
+ kms_sw_dt->size = create_req.size;
+ kms_sw_dt->handle = create_req.handle;
+
+ list_add(&kms_sw_dt->link, &kms_sw->bo_list);
+
+ DEBUG("KMS-DEBUG: created buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
+
+ *stride = kms_sw_dt->stride;
+ return (struct sw_displaytarget *)kms_sw_dt;
+
+ free_bo:
+ memset(&destroy_req, 0, sizeof destroy_req);
+ destroy_req.handle = create_req.handle;
+ drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
+ FREE(kms_sw_dt);
+ no_dt:
+ return NULL;
+}
+
+static void
+kms_sw_displaytarget_destroy(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+ struct drm_mode_destroy_dumb destroy_req;
+
+ kms_sw_dt->ref_count --;
+ if (kms_sw_dt->ref_count > 0)
+ return;
+
+ memset(&destroy_req, 0, sizeof destroy_req);
+ destroy_req.handle = kms_sw_dt->handle;
+ drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_req);
+
+ list_del(&kms_sw_dt->link);
+
+ DEBUG("KMS-DEBUG: destroyed buffer %u\n", kms_sw_dt->handle);
+
+ FREE(kms_sw_dt);
+}
+
+static void *
+kms_sw_displaytarget_map(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ unsigned flags)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+ struct drm_mode_map_dumb map_req;
+ int prot, ret;
+
+ memset(&map_req, 0, sizeof map_req);
+ map_req.handle = kms_sw_dt->handle;
+ ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_req);
+ if (ret)
+ return NULL;
+
+ prot = (flags == PIPE_TRANSFER_READ) ? PROT_READ : (PROT_READ | PROT_WRITE);
+ kms_sw_dt->mapped = mmap(0, kms_sw_dt->size, prot, MAP_SHARED,
+ kms_sw->fd, map_req.offset);
+
+ if (kms_sw_dt->mapped == MAP_FAILED)
+ return NULL;
+
+ DEBUG("KMS-DEBUG: mapped buffer %u (size %u) at %p\n",
+ kms_sw_dt->handle, kms_sw_dt->size, kms_sw_dt->mapped);
+
+ return kms_sw_dt->mapped;
+}
+
+static void
+kms_sw_displaytarget_unmap(struct sw_winsys *ws,
+ struct sw_displaytarget *dt)
+{
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+
+ DEBUG("KMS-DEBUG: unmapped buffer %u (was %p)\n", kms_sw_dt->handle, kms_sw_dt->mapped);
+
+ munmap(kms_sw_dt->mapped, kms_sw_dt->size);
+ kms_sw_dt->mapped = NULL;
+}
+
+static struct sw_displaytarget *
+kms_sw_displaytarget_from_handle(struct sw_winsys *ws,
+ const struct pipe_resource *templ,
+ struct winsys_handle *whandle,
+ unsigned *stride)
+{
+ struct kms_sw_winsys *kms_sw = kms_sw_winsys(ws);
+ struct kms_sw_displaytarget *kms_sw_dt;
+
+ LIST_FOR_EACH_ENTRY(kms_sw_dt, &kms_sw->bo_list, link) {
+ if (kms_sw_dt->handle == whandle->handle) {
+ kms_sw_dt->ref_count++;
+
+ DEBUG("KMS-DEBUG: imported buffer %u (size %u)\n", kms_sw_dt->handle, kms_sw_dt->size);
+
+ *stride = kms_sw_dt->stride;
+ return (struct sw_displaytarget *)kms_sw_dt;
+ }
+ }
+
+ assert(0);
+ return NULL;
+}
+
+static boolean
+kms_sw_displaytarget_get_handle(struct sw_winsys *winsys,
+ struct sw_displaytarget *dt,
+ struct winsys_handle *whandle)
+{
+ struct kms_sw_displaytarget *kms_sw_dt = kms_sw_displaytarget(dt);
+
+ assert(whandle->type == DRM_API_HANDLE_TYPE_SHARED);
+ whandle->handle = kms_sw_dt->handle;
+ whandle->stride = kms_sw_dt->stride;
+ return TRUE;
+}
+
+static void
+kms_sw_displaytarget_display(struct sw_winsys *ws,
+ struct sw_displaytarget *dt,
+ void *context_private,
+ struct pipe_box *box)
+{
+ /* This function should not be called, instead the dri2 loader should
+ handle swap buffers internally.
+ */
+ assert(0);
+}
+
+
+static void
+kms_destroy_sw_winsys(struct sw_winsys *winsys)
+{
+ FREE(winsys);
+}
+
+struct sw_winsys *
+kms_dri_create_winsys(int fd)
+{
+ struct kms_sw_winsys *ws;
+
+ ws = CALLOC_STRUCT(kms_sw_winsys);
+ if (!ws)
+ return NULL;
+
+ ws->fd = fd;
+ list_inithead(&ws->bo_list);
+
+ ws->base.destroy = kms_destroy_sw_winsys;
+
+ ws->base.is_displaytarget_format_supported = kms_sw_is_displaytarget_format_supported;
+
+ /* screen texture functions */
+ ws->base.displaytarget_create = kms_sw_displaytarget_create;
+ ws->base.displaytarget_destroy = kms_sw_displaytarget_destroy;
+ ws->base.displaytarget_from_handle = kms_sw_displaytarget_from_handle;
+ ws->base.displaytarget_get_handle = kms_sw_displaytarget_get_handle;
+
+ /* texture functions */
+ ws->base.displaytarget_map = kms_sw_displaytarget_map;
+ ws->base.displaytarget_unmap = kms_sw_displaytarget_unmap;
+
+ ws->base.displaytarget_display = kms_sw_displaytarget_display;
+
+ return &ws->base;
+}
+
+/* vim: set sw=3 ts=8 sts=3 expandtab: */ \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-26 17:59:36 +0000