--- /dev/null
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION. 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, 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.
+ *
+ */
+#include "msgqueue.h"
+#include <engine/falcon.h>
+#include <subdev/secboot.h>
+
+/* Queues identifiers */
+enum {
+ /* High Priority Command Queue for Host -> PMU communication */
+ MSGQUEUE_0137C63D_COMMAND_QUEUE_HPQ = 0,
+ /* Low Priority Command Queue for Host -> PMU communication */
+ MSGQUEUE_0137C63D_COMMAND_QUEUE_LPQ = 1,
+ /* Message queue for PMU -> Host communication */
+ MSGQUEUE_0137C63D_MESSAGE_QUEUE = 4,
+ MSGQUEUE_0137C63D_NUM_QUEUES = 5,
+};
+
+struct msgqueue_0137c63d {
+ struct nvkm_msgqueue base;
+
+ struct nvkm_msgqueue_queue queue[MSGQUEUE_0137C63D_NUM_QUEUES];
+};
+#define msgqueue_0137c63d(q) \
+ container_of(q, struct msgqueue_0137c63d, base)
+
+static struct nvkm_msgqueue_queue *
+msgqueue_0137c63d_cmd_queue(struct nvkm_msgqueue *queue,
+ enum msgqueue_msg_priority priority)
+{
+ struct msgqueue_0137c63d *priv = msgqueue_0137c63d(queue);
+ const struct nvkm_subdev *subdev = priv->base.falcon->owner;
+
+ switch (priority) {
+ case MSGQUEUE_MSG_PRIORITY_HIGH:
+ return &priv->queue[MSGQUEUE_0137C63D_COMMAND_QUEUE_HPQ];
+ case MSGQUEUE_MSG_PRIORITY_LOW:
+ return &priv->queue[MSGQUEUE_0137C63D_COMMAND_QUEUE_LPQ];
+ default:
+ nvkm_error(subdev, "invalid command queue!\n");
+ return ERR_PTR(-EINVAL);
+ }
+}
+
+static void
+msgqueue_0137c63d_process_msgs(struct nvkm_msgqueue *queue)
+{
+ struct msgqueue_0137c63d *priv = msgqueue_0137c63d(queue);
+ struct nvkm_msgqueue_queue *q_queue =
+ &priv->queue[MSGQUEUE_0137C63D_MESSAGE_QUEUE];
+
+ nvkm_msgqueue_process_msgs(&priv->base, q_queue);
+}
+
+/* Init unit */
+#define MSGQUEUE_0137C63D_UNIT_INIT 0x07
+
+enum {
+ INIT_MSG_INIT = 0x0,
+};
+
+static void
+init_gen_cmdline(struct nvkm_msgqueue *queue, void *buf)
+{
+ struct {
+ u32 reserved;
+ u32 freq_hz;
+ u32 trace_size;
+ u32 trace_dma_base;
+ u16 trace_dma_base1;
+ u8 trace_dma_offset;
+ u32 trace_dma_idx;
+ bool secure_mode;
+ bool raise_priv_sec;
+ struct {
+ u32 dma_base;
+ u16 dma_base1;
+ u8 dma_offset;
+ u16 fb_size;
+ u8 dma_idx;
+ } gc6_ctx;
+ u8 pad;
+ } *args = buf;
+
+ args->secure_mode = 1;
+}
+
+/* forward declaration */
+static int acr_init_wpr(struct nvkm_msgqueue *queue);
+
+static int
+init_callback(struct nvkm_msgqueue *_queue, struct nvkm_msgqueue_hdr *hdr)
+{
+ struct msgqueue_0137c63d *priv = msgqueue_0137c63d(_queue);
+ struct {
+ struct nvkm_msgqueue_msg base;
+
+ u8 pad;
+ u16 os_debug_entry_point;
+
+ struct {
+ u16 size;
+ u16 offset;
+ u8 index;
+ u8 pad;
+ } queue_info[MSGQUEUE_0137C63D_NUM_QUEUES];
+
+ u16 sw_managed_area_offset;
+ u16 sw_managed_area_size;
+ } *init = (void *)hdr;
+ const struct nvkm_subdev *subdev = _queue->falcon->owner;
+ int i;
+
+ if (init->base.hdr.unit_id != MSGQUEUE_0137C63D_UNIT_INIT) {
+ nvkm_error(subdev, "expected message from init unit\n");
+ return -EINVAL;
+ }
+
+ if (init->base.msg_type != INIT_MSG_INIT) {
+ nvkm_error(subdev, "expected PMU init msg\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < MSGQUEUE_0137C63D_NUM_QUEUES; i++) {
+ struct nvkm_msgqueue_queue *queue = &priv->queue[i];
+
+ mutex_init(&queue->mutex);
+
+ queue->index = init->queue_info[i].index;
+ queue->offset = init->queue_info[i].offset;
+ queue->size = init->queue_info[i].size;
+
+ if (i != MSGQUEUE_0137C63D_MESSAGE_QUEUE) {
+ queue->head_reg = 0x4a0 + (queue->index * 4);
+ queue->tail_reg = 0x4b0 + (queue->index * 4);
+ } else {
+ queue->head_reg = 0x4c8;
+ queue->tail_reg = 0x4cc;
+ }
+
+ nvkm_debug(subdev,
+ "queue %d: index %d, offset 0x%08x, size 0x%08x\n",
+ i, queue->index, queue->offset, queue->size);
+ }
+
+ /* Complete initialization by initializing WPR region */
+ return acr_init_wpr(&priv->base);
+}
+
+static const struct nvkm_msgqueue_init_func
+msgqueue_0137c63d_init_func = {
+ .gen_cmdline = init_gen_cmdline,
+ .init_callback = init_callback,
+};
+
+
+
+/* ACR unit */
+#define MSGQUEUE_0137C63D_UNIT_ACR 0x0a
+
+enum {
+ ACR_CMD_INIT_WPR_REGION = 0x00,
+ ACR_CMD_BOOTSTRAP_FALCON = 0x01,
+};
+
+static void
+acr_init_wpr_callback(struct nvkm_msgqueue *queue,
+ struct nvkm_msgqueue_hdr *hdr)
+{
+ struct {
+ struct nvkm_msgqueue_msg base;
+ u32 error_code;
+ } *msg = (void *)hdr;
+ const struct nvkm_subdev *subdev = queue->falcon->owner;
+
+ if (msg->error_code) {
+ nvkm_error(subdev, "ACR WPR init failure: %d\n",
+ msg->error_code);
+ return;
+ }
+
+ nvkm_debug(subdev, "ACR WPR init complete\n");
+ complete_all(&queue->init_done);
+}
+
+static int
+acr_init_wpr(struct nvkm_msgqueue *queue)
+{
+ /*
+ * region_id: region ID in WPR region
+ * wpr_offset: offset in WPR region
+ */
+ struct {
+ struct nvkm_msgqueue_hdr hdr;
+ u8 cmd_type;
+ u32 region_id;
+ u32 wpr_offset;
+ } cmd;
+ memset(&cmd, 0, sizeof(cmd));
+
+ cmd.hdr.unit_id = MSGQUEUE_0137C63D_UNIT_ACR;
+ cmd.hdr.size = sizeof(cmd);
+ cmd.cmd_type = ACR_CMD_INIT_WPR_REGION;
+ cmd.region_id = 0x01;
+ cmd.wpr_offset = 0x00;
+
+ nvkm_msgqueue_post(queue, MSGQUEUE_MSG_PRIORITY_HIGH, &cmd.hdr,
+ acr_init_wpr_callback, NULL, false);
+
+ return 0;
+}
+
+
+static void
+acr_boot_falcon_callback(struct nvkm_msgqueue *priv,
+ struct nvkm_msgqueue_hdr *hdr)
+{
+ struct acr_bootstrap_falcon_msg {
+ struct nvkm_msgqueue_msg base;
+
+ u32 falcon_id;
+ } *msg = (void *)hdr;
+ const struct nvkm_subdev *subdev = priv->falcon->owner;
+ u32 falcon_id = msg->falcon_id;
+
+ if (falcon_id >= NVKM_SECBOOT_FALCON_END) {
+ nvkm_error(subdev, "in bootstrap falcon callback:\n");
+ nvkm_error(subdev, "invalid falcon ID 0x%x\n", falcon_id);
+ return;
+ }
+ nvkm_debug(subdev, "%s booted\n", nvkm_secboot_falcon_name[falcon_id]);
+}
+
+enum {
+ ACR_CMD_BOOTSTRAP_FALCON_FLAGS_RESET_YES = 0,
+ ACR_CMD_BOOTSTRAP_FALCON_FLAGS_RESET_NO = 1,
+};
+
+static int
+acr_boot_falcon(struct nvkm_msgqueue *priv, enum nvkm_secboot_falcon falcon)
+{
+ DECLARE_COMPLETION_ONSTACK(completed);
+ /*
+ * flags - Flag specifying RESET or no RESET.
+ * falcon id - Falcon id specifying falcon to bootstrap.
+ */
+ struct {
+ struct nvkm_msgqueue_hdr hdr;
+ u8 cmd_type;
+ u32 flags;
+ u32 falcon_id;
+ } cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+
+ cmd.hdr.unit_id = MSGQUEUE_0137C63D_UNIT_ACR;
+ cmd.hdr.size = sizeof(cmd);
+ cmd.cmd_type = ACR_CMD_BOOTSTRAP_FALCON;
+ cmd.flags = ACR_CMD_BOOTSTRAP_FALCON_FLAGS_RESET_YES;
+ cmd.falcon_id = falcon;
+ nvkm_msgqueue_post(priv, MSGQUEUE_MSG_PRIORITY_HIGH, &cmd.hdr,
+ acr_boot_falcon_callback, &completed, true);
+
+ if (!wait_for_completion_timeout(&completed, msecs_to_jiffies(1000)))
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static const struct nvkm_msgqueue_acr_func
+msgqueue_0137c63d_acr_func = {
+ .boot_falcon = acr_boot_falcon,
+};
+
+static void
+msgqueue_0137c63d_dtor(struct nvkm_msgqueue *queue)
+{
+ kfree(msgqueue_0137c63d(queue));
+}
+
+static const struct nvkm_msgqueue_func
+msgqueue_0137c63d_func = {
+ .init_func = &msgqueue_0137c63d_init_func,
+ .acr_func = &msgqueue_0137c63d_acr_func,
+ .cmd_queue = msgqueue_0137c63d_cmd_queue,
+ .recv = msgqueue_0137c63d_process_msgs,
+ .dtor = msgqueue_0137c63d_dtor,
+};
+
+int
+msgqueue_0137c63d_new(struct nvkm_falcon *falcon, struct nvkm_msgqueue **queue)
+{
+ struct msgqueue_0137c63d *ret;
+
+ ret = kzalloc(sizeof(*ret), GFP_KERNEL);
+ if (!ret)
+ return -ENOMEM;
+
+ *queue = &ret->base;
+
+ nvkm_msgqueue_ctor(&msgqueue_0137c63d_func, falcon, &ret->base);
+
+ return 0;
+}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff