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path: root/drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c477
1 files changed, 477 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c
new file mode 100644
index 000000000..65c99d948
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c
@@ -0,0 +1,477 @@
+/*
+ * Copyright 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, 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
+ */
+#include "priv.h"
+#include "conn.h"
+#include "dp.h"
+#include "head.h"
+#include "ior.h"
+#include "outp.h"
+
+#include <core/client.h>
+#include <core/notify.h>
+#include <core/ramht.h>
+#include <subdev/bios.h>
+#include <subdev/bios/dcb.h>
+
+#include <nvif/class.h>
+#include <nvif/cl0046.h>
+#include <nvif/event.h>
+#include <nvif/unpack.h>
+
+static void
+nvkm_disp_vblank_fini(struct nvkm_event *event, int type, int id)
+{
+ struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
+ struct nvkm_head *head = nvkm_head_find(disp, id);
+ if (head)
+ head->func->vblank_put(head);
+}
+
+static void
+nvkm_disp_vblank_init(struct nvkm_event *event, int type, int id)
+{
+ struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
+ struct nvkm_head *head = nvkm_head_find(disp, id);
+ if (head)
+ head->func->vblank_get(head);
+}
+
+static int
+nvkm_disp_vblank_ctor(struct nvkm_object *object, void *data, u32 size,
+ struct nvkm_notify *notify)
+{
+ struct nvkm_disp *disp =
+ container_of(notify->event, typeof(*disp), vblank);
+ union {
+ struct nvif_notify_head_req_v0 v0;
+ } *req = data;
+ int ret = -ENOSYS;
+
+ if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, false))) {
+ notify->size = sizeof(struct nvif_notify_head_rep_v0);
+ if (ret = -ENXIO, req->v0.head <= disp->vblank.index_nr) {
+ notify->types = 1;
+ notify->index = req->v0.head;
+ return 0;
+ }
+ }
+
+ return ret;
+}
+
+static const struct nvkm_event_func
+nvkm_disp_vblank_func = {
+ .ctor = nvkm_disp_vblank_ctor,
+ .init = nvkm_disp_vblank_init,
+ .fini = nvkm_disp_vblank_fini,
+};
+
+void
+nvkm_disp_vblank(struct nvkm_disp *disp, int head)
+{
+ struct nvif_notify_head_rep_v0 rep = {};
+ nvkm_event_send(&disp->vblank, 1, head, &rep, sizeof(rep));
+}
+
+static int
+nvkm_disp_hpd_ctor(struct nvkm_object *object, void *data, u32 size,
+ struct nvkm_notify *notify)
+{
+ struct nvkm_disp *disp =
+ container_of(notify->event, typeof(*disp), hpd);
+ union {
+ struct nvif_notify_conn_req_v0 v0;
+ } *req = data;
+ struct nvkm_outp *outp;
+ int ret = -ENOSYS;
+
+ if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, false))) {
+ notify->size = sizeof(struct nvif_notify_conn_rep_v0);
+ list_for_each_entry(outp, &disp->outps, head) {
+ if (ret = -ENXIO, outp->conn->index == req->v0.conn) {
+ if (ret = -ENODEV, outp->conn->hpd.event) {
+ notify->types = req->v0.mask;
+ notify->index = req->v0.conn;
+ ret = 0;
+ }
+ break;
+ }
+ }
+ }
+
+ return ret;
+}
+
+static const struct nvkm_event_func
+nvkm_disp_hpd_func = {
+ .ctor = nvkm_disp_hpd_ctor
+};
+
+int
+nvkm_disp_ntfy(struct nvkm_object *object, u32 type, struct nvkm_event **event)
+{
+ struct nvkm_disp *disp = nvkm_disp(object->engine);
+ switch (type) {
+ case NV04_DISP_NTFY_VBLANK:
+ *event = &disp->vblank;
+ return 0;
+ case NV04_DISP_NTFY_CONN:
+ *event = &disp->hpd;
+ return 0;
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static int
+nvkm_disp_class_new(struct nvkm_device *device,
+ const struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ return nvkm_udisp_new(oclass, data, size, pobject);
+}
+
+static const struct nvkm_device_oclass
+nvkm_disp_sclass = {
+ .ctor = nvkm_disp_class_new,
+};
+
+static int
+nvkm_disp_class_get(struct nvkm_oclass *oclass, int index,
+ const struct nvkm_device_oclass **class)
+{
+ struct nvkm_disp *disp = nvkm_disp(oclass->engine);
+ if (index == 0) {
+ oclass->base = disp->func->root;
+ *class = &nvkm_disp_sclass;
+ return 0;
+ }
+ return 1;
+}
+
+static void
+nvkm_disp_intr(struct nvkm_engine *engine)
+{
+ struct nvkm_disp *disp = nvkm_disp(engine);
+ disp->func->intr(disp);
+}
+
+static int
+nvkm_disp_fini(struct nvkm_engine *engine, bool suspend)
+{
+ struct nvkm_disp *disp = nvkm_disp(engine);
+ struct nvkm_conn *conn;
+ struct nvkm_outp *outp;
+
+ if (disp->func->fini)
+ disp->func->fini(disp);
+
+ list_for_each_entry(outp, &disp->outps, head) {
+ nvkm_outp_fini(outp);
+ }
+
+ list_for_each_entry(conn, &disp->conns, head) {
+ nvkm_conn_fini(conn);
+ }
+
+ return 0;
+}
+
+static int
+nvkm_disp_init(struct nvkm_engine *engine)
+{
+ struct nvkm_disp *disp = nvkm_disp(engine);
+ struct nvkm_conn *conn;
+ struct nvkm_outp *outp;
+ struct nvkm_ior *ior;
+
+ list_for_each_entry(conn, &disp->conns, head) {
+ nvkm_conn_init(conn);
+ }
+
+ list_for_each_entry(outp, &disp->outps, head) {
+ nvkm_outp_init(outp);
+ }
+
+ if (disp->func->init) {
+ int ret = disp->func->init(disp);
+ if (ret)
+ return ret;
+ }
+
+ /* Set 'normal' (ie. when it's attached to a head) state for
+ * each output resource to 'fully enabled'.
+ */
+ list_for_each_entry(ior, &disp->iors, head) {
+ ior->func->power(ior, true, true, true, true, true);
+ }
+
+ return 0;
+}
+
+static int
+nvkm_disp_oneinit(struct nvkm_engine *engine)
+{
+ struct nvkm_disp *disp = nvkm_disp(engine);
+ struct nvkm_subdev *subdev = &disp->engine.subdev;
+ struct nvkm_bios *bios = subdev->device->bios;
+ struct nvkm_outp *outp, *outt, *pair;
+ struct nvkm_conn *conn;
+ struct nvkm_head *head;
+ struct nvkm_ior *ior;
+ struct nvbios_connE connE;
+ struct dcb_output dcbE;
+ u8 hpd = 0, ver, hdr;
+ u32 data;
+ int ret, i;
+
+ /* Create output path objects for each VBIOS display path. */
+ i = -1;
+ while ((data = dcb_outp_parse(bios, ++i, &ver, &hdr, &dcbE))) {
+ if (ver < 0x40) /* No support for chipsets prior to NV50. */
+ break;
+ if (dcbE.type == DCB_OUTPUT_UNUSED)
+ continue;
+ if (dcbE.type == DCB_OUTPUT_EOL)
+ break;
+ outp = NULL;
+
+ switch (dcbE.type) {
+ case DCB_OUTPUT_ANALOG:
+ case DCB_OUTPUT_TV:
+ case DCB_OUTPUT_TMDS:
+ case DCB_OUTPUT_LVDS:
+ ret = nvkm_outp_new(disp, i, &dcbE, &outp);
+ break;
+ case DCB_OUTPUT_DP:
+ ret = nvkm_dp_new(disp, i, &dcbE, &outp);
+ break;
+ case DCB_OUTPUT_WFD:
+ /* No support for WFD yet. */
+ ret = -ENODEV;
+ continue;
+ default:
+ nvkm_warn(subdev, "dcb %d type %d unknown\n",
+ i, dcbE.type);
+ continue;
+ }
+
+ if (ret) {
+ if (outp) {
+ if (ret != -ENODEV)
+ OUTP_ERR(outp, "ctor failed: %d", ret);
+ else
+ OUTP_DBG(outp, "not supported");
+ nvkm_outp_del(&outp);
+ continue;
+ }
+ nvkm_error(subdev, "failed to create outp %d\n", i);
+ continue;
+ }
+
+ list_add_tail(&outp->head, &disp->outps);
+ hpd = max(hpd, (u8)(dcbE.connector + 1));
+ }
+
+ /* Create connector objects based on available output paths. */
+ list_for_each_entry_safe(outp, outt, &disp->outps, head) {
+ /* VBIOS data *should* give us the most useful information. */
+ data = nvbios_connEp(bios, outp->info.connector, &ver, &hdr,
+ &connE);
+
+ /* No bios connector data... */
+ if (!data) {
+ /* Heuristic: anything with the same ccb index is
+ * considered to be on the same connector, any
+ * output path without an associated ccb entry will
+ * be put on its own connector.
+ */
+ int ccb_index = outp->info.i2c_index;
+ if (ccb_index != 0xf) {
+ list_for_each_entry(pair, &disp->outps, head) {
+ if (pair->info.i2c_index == ccb_index) {
+ outp->conn = pair->conn;
+ break;
+ }
+ }
+ }
+
+ /* Connector shared with another output path. */
+ if (outp->conn)
+ continue;
+
+ memset(&connE, 0x00, sizeof(connE));
+ connE.type = DCB_CONNECTOR_NONE;
+ i = -1;
+ } else {
+ i = outp->info.connector;
+ }
+
+ /* Check that we haven't already created this connector. */
+ list_for_each_entry(conn, &disp->conns, head) {
+ if (conn->index == outp->info.connector) {
+ outp->conn = conn;
+ break;
+ }
+ }
+
+ if (outp->conn)
+ continue;
+
+ /* Apparently we need to create a new one! */
+ ret = nvkm_conn_new(disp, i, &connE, &outp->conn);
+ if (ret) {
+ nvkm_error(&disp->engine.subdev,
+ "failed to create outp %d conn: %d\n",
+ outp->index, ret);
+ nvkm_conn_del(&outp->conn);
+ list_del(&outp->head);
+ nvkm_outp_del(&outp);
+ continue;
+ }
+
+ list_add_tail(&outp->conn->head, &disp->conns);
+ }
+
+ ret = nvkm_event_init(&nvkm_disp_hpd_func, 3, hpd, &disp->hpd);
+ if (ret)
+ return ret;
+
+ if (disp->func->oneinit) {
+ ret = disp->func->oneinit(disp);
+ if (ret)
+ return ret;
+ }
+
+ /* Enforce identity-mapped SOR assignment for panels, which have
+ * certain bits (ie. backlight controls) wired to a specific SOR.
+ */
+ list_for_each_entry(outp, &disp->outps, head) {
+ if (outp->conn->info.type == DCB_CONNECTOR_LVDS ||
+ outp->conn->info.type == DCB_CONNECTOR_eDP) {
+ ior = nvkm_ior_find(disp, SOR, ffs(outp->info.or) - 1);
+ if (!WARN_ON(!ior))
+ ior->identity = true;
+ outp->identity = true;
+ }
+ }
+
+ i = 0;
+ list_for_each_entry(head, &disp->heads, head)
+ i = max(i, head->id + 1);
+
+ return nvkm_event_init(&nvkm_disp_vblank_func, 1, i, &disp->vblank);
+}
+
+static void *
+nvkm_disp_dtor(struct nvkm_engine *engine)
+{
+ struct nvkm_disp *disp = nvkm_disp(engine);
+ struct nvkm_conn *conn;
+ struct nvkm_outp *outp;
+ struct nvkm_ior *ior;
+ struct nvkm_head *head;
+ void *data = disp;
+
+ nvkm_ramht_del(&disp->ramht);
+ nvkm_gpuobj_del(&disp->inst);
+
+ nvkm_event_fini(&disp->uevent);
+
+ if (disp->super.wq) {
+ destroy_workqueue(disp->super.wq);
+ mutex_destroy(&disp->super.mutex);
+ }
+
+ nvkm_event_fini(&disp->vblank);
+ nvkm_event_fini(&disp->hpd);
+
+ while (!list_empty(&disp->conns)) {
+ conn = list_first_entry(&disp->conns, typeof(*conn), head);
+ list_del(&conn->head);
+ nvkm_conn_del(&conn);
+ }
+
+ while (!list_empty(&disp->outps)) {
+ outp = list_first_entry(&disp->outps, typeof(*outp), head);
+ list_del(&outp->head);
+ nvkm_outp_del(&outp);
+ }
+
+ while (!list_empty(&disp->iors)) {
+ ior = list_first_entry(&disp->iors, typeof(*ior), head);
+ nvkm_ior_del(&ior);
+ }
+
+ while (!list_empty(&disp->heads)) {
+ head = list_first_entry(&disp->heads, typeof(*head), head);
+ nvkm_head_del(&head);
+ }
+
+ return data;
+}
+
+static const struct nvkm_engine_func
+nvkm_disp = {
+ .dtor = nvkm_disp_dtor,
+ .oneinit = nvkm_disp_oneinit,
+ .init = nvkm_disp_init,
+ .fini = nvkm_disp_fini,
+ .intr = nvkm_disp_intr,
+ .base.sclass = nvkm_disp_class_get,
+};
+
+int
+nvkm_disp_new_(const struct nvkm_disp_func *func, struct nvkm_device *device,
+ enum nvkm_subdev_type type, int inst, struct nvkm_disp **pdisp)
+{
+ struct nvkm_disp *disp;
+ int ret;
+
+ if (!(disp = *pdisp = kzalloc(sizeof(**pdisp), GFP_KERNEL)))
+ return -ENOMEM;
+
+ disp->func = func;
+ INIT_LIST_HEAD(&disp->heads);
+ INIT_LIST_HEAD(&disp->iors);
+ INIT_LIST_HEAD(&disp->outps);
+ INIT_LIST_HEAD(&disp->conns);
+ spin_lock_init(&disp->client.lock);
+
+ ret = nvkm_engine_ctor(&nvkm_disp, device, type, inst, true, &disp->engine);
+ if (ret)
+ return ret;
+
+ if (func->super) {
+ disp->super.wq = create_singlethread_workqueue("nvkm-disp");
+ if (!disp->super.wq)
+ return -ENOMEM;
+
+ INIT_WORK(&disp->super.work, func->super);
+ mutex_init(&disp->super.mutex);
+ }
+
+ return nvkm_event_init(func->uevent, 1, ARRAY_SIZE(disp->chan), &disp->uevent);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-26 02:32:39 +0000