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-rw-r--r--nouveau/nouveau.c489
1 files changed, 489 insertions, 0 deletions
diff --git a/nouveau/nouveau.c b/nouveau/nouveau.c
new file mode 100644
index 00000000..699b9b76
--- /dev/null
+++ b/nouveau/nouveau.c
@@ -0,0 +1,489 @@
+/*
+ * Copyright 2012 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, 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 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
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <errno.h>
+#include <sys/mman.h>
+
+#include <xf86drm.h>
+#include <xf86atomic.h>
+#include "libdrm_lists.h"
+#include "nouveau_drm.h"
+
+#include "nouveau.h"
+#include "private.h"
+
+#ifdef DEBUG
+uint32_t nouveau_debug = 0;
+
+static void
+debug_init(char *args)
+{
+ if (args) {
+ int n = strtol(args, NULL, 0);
+ if (n >= 0)
+ nouveau_debug = n;
+ }
+}
+#endif
+
+/* this is the old libdrm's version of nouveau_device_wrap(), the symbol
+ * is kept here to prevent AIGLX from crashing if the DDX is linked against
+ * the new libdrm, but the DRI driver against the old
+ */
+int
+nouveau_device_open_existing(struct nouveau_device **pdev, int close, int fd,
+ drm_context_t ctx)
+{
+ return -EACCES;
+}
+
+int
+nouveau_device_wrap(int fd, int close, struct nouveau_device **pdev)
+{
+ struct nouveau_device_priv *nvdev = calloc(1, sizeof(*nvdev));
+ struct nouveau_device *dev = &nvdev->base;
+ uint64_t chipset, vram, gart, bousage;
+ drmVersionPtr ver;
+ int ret;
+
+#ifdef DEBUG
+ debug_init(getenv("NOUVEAU_LIBDRM_DEBUG"));
+#endif
+
+ if (!nvdev)
+ return -ENOMEM;
+ nvdev->base.fd = fd;
+
+ ver = drmGetVersion(fd);
+ if (ver) dev->drm_version = (ver->version_major << 24) |
+ (ver->version_minor << 8) |
+ ver->version_patchlevel;
+ drmFreeVersion(ver);
+
+ if ( dev->drm_version != 0x00000010 &&
+ (dev->drm_version < 0x01000000 ||
+ dev->drm_version >= 0x02000000)) {
+ nouveau_device_del(&dev);
+ return -EINVAL;
+ }
+
+ ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_CHIPSET_ID, &chipset);
+ if (ret == 0)
+ ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_FB_SIZE, &vram);
+ if (ret == 0)
+ ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_AGP_SIZE, &gart);
+ if (ret) {
+ nouveau_device_del(&dev);
+ return ret;
+ }
+
+ ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_HAS_BO_USAGE, &bousage);
+ if (ret == 0)
+ nvdev->have_bo_usage = (bousage != 0);
+
+ nvdev->close = close;
+ DRMINITLISTHEAD(&nvdev->bo_list);
+ nvdev->base.object.oclass = NOUVEAU_DEVICE_CLASS;
+ nvdev->base.lib_version = 0x01000000;
+ nvdev->base.chipset = chipset;
+ nvdev->base.vram_size = vram;
+ nvdev->base.gart_size = gart;
+ nvdev->base.vram_limit = (nvdev->base.vram_size * 80) / 100;
+ nvdev->base.gart_limit = (nvdev->base.gart_size * 80) / 100;
+
+ *pdev = &nvdev->base;
+ return 0;
+}
+
+int
+nouveau_device_open(const char *busid, struct nouveau_device **pdev)
+{
+ int ret = -ENODEV, fd = drmOpen("nouveau", busid);
+ if (fd >= 0) {
+ ret = nouveau_device_wrap(fd, 1, pdev);
+ if (ret)
+ drmClose(fd);
+ }
+ return ret;
+}
+
+void
+nouveau_device_del(struct nouveau_device **pdev)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(*pdev);
+ if (nvdev) {
+ if (nvdev->close)
+ drmClose(nvdev->base.fd);
+ free(nvdev->client);
+ free(nvdev);
+ *pdev = NULL;
+ }
+}
+
+int
+nouveau_getparam(struct nouveau_device *dev, uint64_t param, uint64_t *value)
+{
+ struct drm_nouveau_getparam r = { param, 0 };
+ int fd = dev->fd, ret =
+ drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &r, sizeof(r));
+ *value = r.value;
+ return ret;
+}
+
+int
+nouveau_setparam(struct nouveau_device *dev, uint64_t param, uint64_t value)
+{
+ struct drm_nouveau_setparam r = { param, value };
+ return drmCommandWrite(dev->fd, DRM_NOUVEAU_SETPARAM, &r, sizeof(r));
+}
+
+int
+nouveau_client_new(struct nouveau_device *dev, struct nouveau_client **pclient)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct nouveau_client_priv *pcli;
+ int id = 0, i, ret = -ENOMEM;
+ uint32_t *clients;
+
+ for (i = 0; i < nvdev->nr_client; i++) {
+ id = ffs(nvdev->client[i]) - 1;
+ if (id >= 0)
+ goto out;
+ }
+
+ clients = realloc(nvdev->client, sizeof(uint32_t) * (i + 1));
+ if (!clients)
+ return ret;
+ nvdev->client = clients;
+ nvdev->client[i] = 0;
+ nvdev->nr_client++;
+
+out:
+ pcli = calloc(1, sizeof(*pcli));
+ if (pcli) {
+ nvdev->client[i] |= (1 << id);
+ pcli->base.device = dev;
+ pcli->base.id = (i * 32) + id;
+ ret = 0;
+ }
+
+ *pclient = &pcli->base;
+ return ret;
+}
+
+void
+nouveau_client_del(struct nouveau_client **pclient)
+{
+ struct nouveau_client_priv *pcli = nouveau_client(*pclient);
+ struct nouveau_device_priv *nvdev;
+ if (pcli) {
+ int id = pcli->base.id;
+ nvdev = nouveau_device(pcli->base.device);
+ nvdev->client[id / 32] &= ~(1 << (id % 32));
+ free(pcli->kref);
+ free(pcli);
+ }
+}
+
+int
+nouveau_object_new(struct nouveau_object *parent, uint64_t handle,
+ uint32_t oclass, void *data, uint32_t length,
+ struct nouveau_object **pobj)
+{
+ struct nouveau_device *dev;
+ struct nouveau_object *obj;
+ int ret = -EINVAL;
+
+ if (length == 0)
+ length = sizeof(struct nouveau_object *);
+ obj = malloc(sizeof(*obj) + length);
+ obj->parent = parent;
+ obj->handle = handle;
+ obj->oclass = oclass;
+ obj->length = length;
+ obj->data = obj + 1;
+ if (data)
+ memcpy(obj->data, data, length);
+ *(struct nouveau_object **)obj->data = obj;
+
+ dev = nouveau_object_find(obj, NOUVEAU_DEVICE_CLASS);
+ switch (parent->oclass) {
+ case NOUVEAU_DEVICE_CLASS:
+ switch (obj->oclass) {
+ case NOUVEAU_FIFO_CHANNEL_CLASS:
+ {
+ if (dev->chipset < 0xc0)
+ ret = abi16_chan_nv04(obj);
+ else
+ ret = abi16_chan_nvc0(obj);
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ case NOUVEAU_FIFO_CHANNEL_CLASS:
+ switch (obj->oclass) {
+ case NOUVEAU_NOTIFIER_CLASS:
+ ret = abi16_ntfy(obj);
+ break;
+ default:
+ ret = abi16_engobj(obj);
+ break;
+ }
+ default:
+ break;
+ }
+
+ if (ret) {
+ free(obj);
+ return ret;
+ }
+
+ *pobj = obj;
+ return 0;
+}
+
+void
+nouveau_object_del(struct nouveau_object **pobj)
+{
+ struct drm_nouveau_gpuobj_free req;
+ struct nouveau_object *obj = *pobj;
+ struct nouveau_device *dev;
+ if (obj) {
+ dev = nouveau_object_find(obj, NOUVEAU_DEVICE_CLASS);
+ req.channel = obj->parent->handle;
+ req.handle = obj->handle;
+ drmCommandWrite(dev->fd, DRM_NOUVEAU_GPUOBJ_FREE,
+ &req, sizeof(req));
+ }
+ free(obj);
+ *pobj = NULL;
+}
+
+void *
+nouveau_object_find(struct nouveau_object *obj, uint32_t pclass)
+{
+ while (obj && obj->oclass != pclass) {
+ obj = obj->parent;
+ if (pclass == NOUVEAU_PARENT_CLASS)
+ break;
+ }
+ return obj;
+}
+
+static void
+nouveau_bo_del(struct nouveau_bo *bo)
+{
+ struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
+ struct drm_gem_close req = { bo->handle };
+ DRMLISTDEL(&nvbo->head);
+ if (bo->map)
+ munmap(bo->map, bo->size);
+ drmIoctl(bo->device->fd, DRM_IOCTL_GEM_CLOSE, &req);
+ free(nvbo);
+}
+
+int
+nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align,
+ uint64_t size, union nouveau_bo_config *config,
+ struct nouveau_bo **pbo)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct nouveau_bo_priv *nvbo = calloc(1, sizeof(*nvbo));
+ struct nouveau_bo *bo = &nvbo->base;
+ int ret;
+
+ if (!nvbo)
+ return -ENOMEM;
+ atomic_set(&nvbo->refcnt, 1);
+ bo->device = dev;
+ bo->flags = flags;
+ bo->size = size;
+
+ ret = abi16_bo_init(bo, align, config);
+ if (ret) {
+ free(nvbo);
+ return ret;
+ }
+
+ DRMLISTADD(&nvbo->head, &nvdev->bo_list);
+
+ *pbo = bo;
+ return 0;
+}
+
+int
+nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle,
+ struct nouveau_bo **pbo)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct drm_nouveau_gem_info req = { .handle = handle };
+ struct nouveau_bo_priv *nvbo;
+ int ret;
+
+ DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) {
+ if (nvbo->base.handle == handle) {
+ *pbo = NULL;
+ nouveau_bo_ref(&nvbo->base, pbo);
+ return 0;
+ }
+ }
+
+ ret = drmCommandWriteRead(dev->fd, DRM_NOUVEAU_GEM_INFO,
+ &req, sizeof(req));
+ if (ret)
+ return ret;
+
+ nvbo = calloc(1, sizeof(*nvbo));
+ if (nvbo) {
+ atomic_set(&nvbo->refcnt, 1);
+ nvbo->base.device = dev;
+ abi16_bo_info(&nvbo->base, &req);
+ DRMLISTADD(&nvbo->head, &nvdev->bo_list);
+ *pbo = &nvbo->base;
+ return 0;
+ }
+
+ return -ENOMEM;
+}
+
+int
+nouveau_bo_name_ref(struct nouveau_device *dev, uint32_t name,
+ struct nouveau_bo **pbo)
+{
+ struct nouveau_device_priv *nvdev = nouveau_device(dev);
+ struct nouveau_bo_priv *nvbo;
+ struct drm_gem_open req = { .name = name };
+ int ret;
+
+ DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) {
+ if (nvbo->name == name) {
+ *pbo = NULL;
+ nouveau_bo_ref(&nvbo->base, pbo);
+ return 0;
+ }
+ }
+
+ ret = drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req);
+ if (ret == 0) {
+ ret = nouveau_bo_wrap(dev, req.handle, pbo);
+ nouveau_bo((*pbo))->name = name;
+ }
+
+ return ret;
+}
+
+int
+nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name)
+{
+ struct drm_gem_flink req = { .handle = bo->handle };
+ struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
+ if (!nvbo->name) {
+ int ret = drmIoctl(bo->device->fd, DRM_IOCTL_GEM_FLINK, &req);
+ if (ret)
+ return ret;
+ nvbo->name = req.name;
+ }
+ *name = nvbo->name;
+ return 0;
+}
+
+void
+nouveau_bo_ref(struct nouveau_bo *bo, struct nouveau_bo **pref)
+{
+ struct nouveau_bo *ref = *pref;
+ if (bo) {
+ atomic_inc(&nouveau_bo(bo)->refcnt);
+ }
+ if (ref) {
+ if (atomic_dec_and_test(&nouveau_bo(ref)->refcnt))
+ nouveau_bo_del(ref);
+ }
+ *pref = bo;
+}
+
+int
+nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access,
+ struct nouveau_client *client)
+{
+ struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
+ struct drm_nouveau_gem_cpu_prep req;
+ struct nouveau_pushbuf *push;
+ int ret = 0;
+
+ if (!(access & NOUVEAU_BO_RDWR))
+ return 0;
+
+ push = cli_push_get(client, bo);
+ if (push && push->channel)
+ nouveau_pushbuf_kick(push, push->channel);
+
+ if (!nvbo->name && !(nvbo->access & NOUVEAU_BO_WR) &&
+ !( access & NOUVEAU_BO_WR))
+ return 0;
+
+ req.handle = bo->handle;
+ req.flags = 0;
+ if (access & NOUVEAU_BO_WR)
+ req.flags |= NOUVEAU_GEM_CPU_PREP_WRITE;
+ if (access & NOUVEAU_BO_NOBLOCK)
+ req.flags |= NOUVEAU_GEM_CPU_PREP_NOWAIT;
+
+ do {
+ ret = drmCommandWrite(bo->device->fd,
+ DRM_NOUVEAU_GEM_CPU_PREP,
+ &req, sizeof(req));
+ } while (ret == -EAGAIN);
+
+ if (ret == 0)
+ nvbo->access = 0;
+ return ret;
+}
+
+int
+nouveau_bo_map(struct nouveau_bo *bo, uint32_t access,
+ struct nouveau_client *client)
+{
+ struct nouveau_bo_priv *nvbo = nouveau_bo(bo);
+ if (bo->map == NULL) {
+ bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, bo->device->fd, nvbo->map_handle);
+ if (bo->map == MAP_FAILED) {
+ bo->map = NULL;
+ return -errno;
+ }
+ }
+ return nouveau_bo_wait(bo, access, client);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 17:42:18 +0000