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author | Stanimir Varbanov <stanimir.varbanov@linaro.org> | 2017-06-15 13:31:48 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 08:53:40 -0300 |
commit | 09c2845e8fe4fcab942929480203f504a6e0a114 (patch) | |
tree | 0c9fafdb7ed949c1b49451831fe051edeaec320e /drivers/media/platform/qcom/venus/hfi.c | |
parent | aaaa93eda64b004c20d55049c3b7b61c4d647559 (diff) | |
download | linux-stable-09c2845e8fe4fcab942929480203f504a6e0a114.tar.gz linux-stable-09c2845e8fe4fcab942929480203f504a6e0a114.tar.bz2 linux-stable-09c2845e8fe4fcab942929480203f504a6e0a114.zip |
[media] media: venus: hfi: add Host Firmware Interface (HFI)
This is the implementation of HFI. It is charged with the
responsibility to comunicate with the firmware through an
interface commands and messages.
- hfi.c has interface functions used by the core, decoder
and encoder parts to comunicate with the firmware. For example
there are functions for session and core initialisation.
- hfi_cmds has packetization operations which preparing
packets to be send from host to firmware.
- hfi_msgs takes care of messages sent from firmware to the
host.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/qcom/venus/hfi.c')
-rw-r--r-- | drivers/media/platform/qcom/venus/hfi.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/venus/hfi.c b/drivers/media/platform/qcom/venus/hfi.c new file mode 100644 index 000000000000..20c9205fdbb4 --- /dev/null +++ b/drivers/media/platform/qcom/venus/hfi.c @@ -0,0 +1,522 @@ +/* + * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. + * Copyright (C) 2017 Linaro Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include <linux/slab.h> +#include <linux/mutex.h> +#include <linux/list.h> +#include <linux/completion.h> +#include <linux/platform_device.h> +#include <linux/videodev2.h> + +#include "core.h" +#include "hfi.h" +#include "hfi_cmds.h" +#include "hfi_venus.h" + +#define TIMEOUT msecs_to_jiffies(1000) + +static u32 to_codec_type(u32 pixfmt) +{ + switch (pixfmt) { + case V4L2_PIX_FMT_H264: + case V4L2_PIX_FMT_H264_NO_SC: + return HFI_VIDEO_CODEC_H264; + case V4L2_PIX_FMT_H263: + return HFI_VIDEO_CODEC_H263; + case V4L2_PIX_FMT_MPEG1: + return HFI_VIDEO_CODEC_MPEG1; + case V4L2_PIX_FMT_MPEG2: + return HFI_VIDEO_CODEC_MPEG2; + case V4L2_PIX_FMT_MPEG4: + return HFI_VIDEO_CODEC_MPEG4; + case V4L2_PIX_FMT_VC1_ANNEX_G: + case V4L2_PIX_FMT_VC1_ANNEX_L: + return HFI_VIDEO_CODEC_VC1; + case V4L2_PIX_FMT_VP8: + return HFI_VIDEO_CODEC_VP8; + case V4L2_PIX_FMT_VP9: + return HFI_VIDEO_CODEC_VP9; + case V4L2_PIX_FMT_XVID: + return HFI_VIDEO_CODEC_DIVX; + default: + return 0; + } +} + +int hfi_core_init(struct venus_core *core) +{ + int ret = 0; + + mutex_lock(&core->lock); + + if (core->state >= CORE_INIT) + goto unlock; + + reinit_completion(&core->done); + + ret = core->ops->core_init(core); + if (ret) + goto unlock; + + ret = wait_for_completion_timeout(&core->done, TIMEOUT); + if (!ret) { + ret = -ETIMEDOUT; + goto unlock; + } + + ret = 0; + + if (core->error != HFI_ERR_NONE) { + ret = -EIO; + goto unlock; + } + + core->state = CORE_INIT; +unlock: + mutex_unlock(&core->lock); + return ret; +} + +static int core_deinit_wait_atomic_t(atomic_t *p) +{ + schedule(); + return 0; +} + +int hfi_core_deinit(struct venus_core *core, bool blocking) +{ + int ret = 0, empty; + + mutex_lock(&core->lock); + + if (core->state == CORE_UNINIT) + goto unlock; + + empty = list_empty(&core->instances); + + if (!empty && !blocking) { + ret = -EBUSY; + goto unlock; + } + + if (!empty) { + mutex_unlock(&core->lock); + wait_on_atomic_t(&core->insts_count, core_deinit_wait_atomic_t, + TASK_UNINTERRUPTIBLE); + mutex_lock(&core->lock); + } + + ret = core->ops->core_deinit(core); + + if (!ret) + core->state = CORE_UNINIT; + +unlock: + mutex_unlock(&core->lock); + return ret; +} + +int hfi_core_suspend(struct venus_core *core) +{ + if (core->state != CORE_INIT) + return 0; + + return core->ops->suspend(core); +} + +int hfi_core_resume(struct venus_core *core, bool force) +{ + if (!force && core->state != CORE_INIT) + return 0; + + return core->ops->resume(core); +} + +int hfi_core_trigger_ssr(struct venus_core *core, u32 type) +{ + return core->ops->core_trigger_ssr(core, type); +} + +int hfi_core_ping(struct venus_core *core) +{ + int ret; + + mutex_lock(&core->lock); + + ret = core->ops->core_ping(core, 0xbeef); + if (ret) + return ret; + + ret = wait_for_completion_timeout(&core->done, TIMEOUT); + if (!ret) { + ret = -ETIMEDOUT; + goto unlock; + } + ret = 0; + if (core->error != HFI_ERR_NONE) + ret = -ENODEV; +unlock: + mutex_unlock(&core->lock); + return ret; +} + +static int wait_session_msg(struct venus_inst *inst) +{ + int ret; + + ret = wait_for_completion_timeout(&inst->done, TIMEOUT); + if (!ret) + return -ETIMEDOUT; + + if (inst->error != HFI_ERR_NONE) + return -EIO; + + return 0; +} + +int hfi_session_create(struct venus_inst *inst, const struct hfi_inst_ops *ops) +{ + struct venus_core *core = inst->core; + + if (!ops) + return -EINVAL; + + inst->state = INST_UNINIT; + init_completion(&inst->done); + inst->ops = ops; + + mutex_lock(&core->lock); + list_add_tail(&inst->list, &core->instances); + atomic_inc(&core->insts_count); + mutex_unlock(&core->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(hfi_session_create); + +int hfi_session_init(struct venus_inst *inst, u32 pixfmt) +{ + struct venus_core *core = inst->core; + const struct hfi_ops *ops = core->ops; + u32 codec; + int ret; + + codec = to_codec_type(pixfmt); + reinit_completion(&inst->done); + + ret = ops->session_init(inst, inst->session_type, codec); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_INIT; + + return 0; +} +EXPORT_SYMBOL_GPL(hfi_session_init); + +void hfi_session_destroy(struct venus_inst *inst) +{ + struct venus_core *core = inst->core; + + mutex_lock(&core->lock); + list_del_init(&inst->list); + atomic_dec(&core->insts_count); + wake_up_atomic_t(&core->insts_count); + mutex_unlock(&core->lock); +} +EXPORT_SYMBOL_GPL(hfi_session_destroy); + +int hfi_session_deinit(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state == INST_UNINIT) + return 0; + + if (inst->state < INST_INIT) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_end(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_UNINIT; + + return 0; +} +EXPORT_SYMBOL_GPL(hfi_session_deinit); + +int hfi_session_start(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state != INST_LOAD_RESOURCES) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_start(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_START; + + return 0; +} + +int hfi_session_stop(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state != INST_START) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_stop(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_STOP; + + return 0; +} + +int hfi_session_continue(struct venus_inst *inst) +{ + struct venus_core *core = inst->core; + + if (core->res->hfi_version != HFI_VERSION_3XX) + return 0; + + return core->ops->session_continue(inst); +} +EXPORT_SYMBOL_GPL(hfi_session_continue); + +int hfi_session_abort(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + reinit_completion(&inst->done); + + ret = ops->session_abort(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + return 0; +} + +int hfi_session_load_res(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state != INST_INIT) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_load_res(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_LOAD_RESOURCES; + + return 0; +} + +int hfi_session_unload_res(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state != INST_STOP) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_release_res(inst); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + inst->state = INST_RELEASE_RESOURCES; + + return 0; +} + +int hfi_session_flush(struct venus_inst *inst) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + reinit_completion(&inst->done); + + ret = ops->session_flush(inst, HFI_FLUSH_ALL); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(hfi_session_flush); + +int hfi_session_set_buffers(struct venus_inst *inst, struct hfi_buffer_desc *bd) +{ + const struct hfi_ops *ops = inst->core->ops; + + return ops->session_set_buffers(inst, bd); +} + +int hfi_session_unset_buffers(struct venus_inst *inst, + struct hfi_buffer_desc *bd) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + reinit_completion(&inst->done); + + ret = ops->session_unset_buffers(inst, bd); + if (ret) + return ret; + + if (!bd->response_required) + return 0; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + return 0; +} + +int hfi_session_get_property(struct venus_inst *inst, u32 ptype, + union hfi_get_property *hprop) +{ + const struct hfi_ops *ops = inst->core->ops; + int ret; + + if (inst->state < INST_INIT || inst->state >= INST_STOP) + return -EINVAL; + + reinit_completion(&inst->done); + + ret = ops->session_get_property(inst, ptype); + if (ret) + return ret; + + ret = wait_session_msg(inst); + if (ret) + return ret; + + *hprop = inst->hprop; + + return 0; +} +EXPORT_SYMBOL_GPL(hfi_session_get_property); + +int hfi_session_set_property(struct venus_inst *inst, u32 ptype, void *pdata) +{ + const struct hfi_ops *ops = inst->core->ops; + + if (inst->state < INST_INIT || inst->state >= INST_STOP) + return -EINVAL; + + return ops->session_set_property(inst, ptype, pdata); +} +EXPORT_SYMBOL_GPL(hfi_session_set_property); + +int hfi_session_process_buf(struct venus_inst *inst, struct hfi_frame_data *fd) +{ + const struct hfi_ops *ops = inst->core->ops; + + if (fd->buffer_type == HFI_BUFFER_INPUT) + return ops->session_etb(inst, fd); + else if (fd->buffer_type == HFI_BUFFER_OUTPUT) + return ops->session_ftb(inst, fd); + + return -EINVAL; +} + +irqreturn_t hfi_isr_thread(int irq, void *dev_id) +{ + struct venus_core *core = dev_id; + + return core->ops->isr_thread(core); +} + +irqreturn_t hfi_isr(int irq, void *dev) +{ + struct venus_core *core = dev; + + return core->ops->isr(core); +} + +int hfi_create(struct venus_core *core, const struct hfi_core_ops *ops) +{ + int ret; + + if (!ops) + return -EINVAL; + + atomic_set(&core->insts_count, 0); + core->core_ops = ops; + core->state = CORE_UNINIT; + init_completion(&core->done); + pkt_set_version(core->res->hfi_version); + ret = venus_hfi_create(core); + + return ret; +} + +void hfi_destroy(struct venus_core *core) +{ + venus_hfi_destroy(core); +} |