diff options
author | Jerry-ch Chen <jerry-ch.chen@mediatek.com> | 2019-04-03 21:29:37 +0800 |
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committer | Commit Bot <commit-bot@chromium.org> | 2019-08-26 15:37:49 +0000 |
commit | 92291e9214b1a4d108a47ebe156f2f5748824f06 (patch) | |
tree | 70e8846b33c0b92ab5c2ea65c521e91aa5bb949f /board/kukui_scp/fd.c | |
parent | 82ac51f46213eb1853db970a3e530e9a8db4d9af (diff) | |
download | chrome-ec-92291e9214b1a4d108a47ebe156f2f5748824f06.tar.gz |
mtk_isp: Add the service for fd driver
v2:
Fix review comments
Task Ready Name Events Time (s) StkUsed
5 FD_SERVICE 00000000 0.056489 568/640
v1:
Add new EC task to support FD driver service.
The real fd_msg_handler is implemented in the private-8183 repo.
Task Ready Name Events Time (s) StkUsed
6 FD_SERVICE 00000000 0.067458 504/640
BRANCH=none
BUG=b:139269434
TEST=build kukui_scp pass & check FD_SERVICE is available
Change-Id: I1d1734bf9d944fc79d6bd3b170ad69a17a32aa6a
Signed-off-by: Jerry-ch Chen <jerry-ch.chen@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1577498
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'board/kukui_scp/fd.c')
-rw-r--r-- | board/kukui_scp/fd.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/board/kukui_scp/fd.c b/board/kukui_scp/fd.c new file mode 100644 index 0000000000..11f27cf945 --- /dev/null +++ b/board/kukui_scp/fd.c @@ -0,0 +1,83 @@ +/* Copyright 2018 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "chip/mt_scp/ipi_chip.h" +#include "chip/mt_scp/registers.h" +#include "console.h" +#include "hooks.h" +#include "task.h" +#include "util.h" +#include "fd.h" +#include "queue.h" +#include "queue_policies.h" + +#define CPRINTF(format, args...) cprintf(CC_IPI, format, ##args) +#define CPRINTS(format, args...) cprints(CC_IPI, format, ##args) + +/* Forwad declaration. */ +static struct consumer const event_fd_consumer; +static void event_fd_written(struct consumer const *consumer, size_t count); + +static struct queue const fd_queue = QUEUE_DIRECT(4, struct fd_msg, + null_producer, + event_fd_consumer); +static struct consumer const event_fd_consumer = { + .queue = &fd_queue, + .ops = &((struct consumer_ops const) { + .written = event_fd_written, + }), +}; + +/* Stub functions only provided by private overlays. */ +// Jerry TODO implement private part and remove this +#ifndef HAVE_PRIVATE_MT8183 +void fd_ipi_msg_handler(void *data) {} +#endif + +static void event_fd_written(struct consumer const *consumer, size_t count) +{ + task_wake(TASK_ID_FD_SERVICE); +} + +static void fd_ipi_handler(int id, void *data, uint32_t len) +{ + struct fd_msg rsv_msg; + + if (!len) + return; + + rsv_msg.type = IPI_FD_CMD; + memcpy(rsv_msg.msg, data, MIN(len, sizeof(rsv_msg.msg))); + + /* + * If there is no other IPI handler touch this queue, we don't need to + * interrupt_disable() or task_disable_irq(). + */ + if (!queue_add_unit(&fd_queue, &rsv_msg)) + CPRINTS("Could not send fd %d to the queue.", rsv_msg.type); +} +DECLARE_IPI(IPI_FD_CMD, fd_ipi_handler, 0); + +/* This function renames from fd_service_entry. */ +void fd_service_task(void *u) +{ + struct fd_msg rsv_msg; + size_t size; + + while (1) { + /* + * Queue unit is added in IPI handler, which is in ISR context. + * Disable IRQ to prevent a clobbered queue. + */ + ipi_disable_irq(SCP_IRQ_IPC0); + size = queue_remove_unit(&fd_queue, &rsv_msg); + ipi_enable_irq(SCP_IRQ_IPC0); + + if (!size) + task_wait_event(-1); + else + fd_ipi_msg_handler(rsv_msg.msg); + } +} |