This patch adds support for the go2001 PCI codec driver. This hardware is present on ChromeOS based devices like the Acer ChromeBox and Acer/LG ChromeBase 24 devices. This driver comes from the ChromeOS v3.18 kernel tree and has been modified to support vb2_buffer restructuring introduced in Linux v4.4. This driver is originally developed by: Pawel Osciak <posciak@xxxxxxxxxxxx> Ville-Mikko Rautio <vmr@xxxxxxxxxxxx> henryhsu <henryhsu@xxxxxxxxxxxx> Wu-Cheng Li <wuchengli@xxxxxxxxxxxx> Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxxxxx> --- drivers/media/pci/Kconfig | 2 + drivers/media/pci/Makefile | 1 + drivers/media/pci/go2001/Kconfig | 11 + drivers/media/pci/go2001/Makefile | 2 + drivers/media/pci/go2001/go2001.h | 331 ++++ drivers/media/pci/go2001/go2001_driver.c | 2563 ++++++++++++++++++++++++++++++ drivers/media/pci/go2001/go2001_hw.c | 1365 ++++++++++++++++ drivers/media/pci/go2001/go2001_hw.h | 55 + drivers/media/pci/go2001/go2001_proto.h | 359 +++++ 9 files changed, 4689 insertions(+) create mode 100644 drivers/media/pci/go2001/Kconfig create mode 100644 drivers/media/pci/go2001/Makefile create mode 100644 drivers/media/pci/go2001/go2001.h create mode 100644 drivers/media/pci/go2001/go2001_driver.c create mode 100644 drivers/media/pci/go2001/go2001_hw.c create mode 100644 drivers/media/pci/go2001/go2001_hw.h create mode 100644 drivers/media/pci/go2001/go2001_proto.h diff --git a/drivers/media/pci/Kconfig b/drivers/media/pci/Kconfig index da28e68..837681e 100644 --- a/drivers/media/pci/Kconfig +++ b/drivers/media/pci/Kconfig @@ -54,5 +54,7 @@ source "drivers/media/pci/smipcie/Kconfig" source "drivers/media/pci/netup_unidvb/Kconfig" endif +source "drivers/media/pci/go2001/Kconfig" + endif #MEDIA_PCI_SUPPORT endif #PCI diff --git a/drivers/media/pci/Makefile b/drivers/media/pci/Makefile index a7e8af0..58639b7 100644 --- a/drivers/media/pci/Makefile +++ b/drivers/media/pci/Makefile @@ -32,3 +32,4 @@ obj-$(CONFIG_STA2X11_VIP) += sta2x11/ obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/ obj-$(CONFIG_VIDEO_COBALT) += cobalt/ obj-$(CONFIG_VIDEO_TW5864) += tw5864/ +obj-$(CONFIG_VIDEO_GO2001) += go2001/ diff --git a/drivers/media/pci/go2001/Kconfig b/drivers/media/pci/go2001/Kconfig new file mode 100644 index 0000000..c7b5149 --- /dev/null +++ b/drivers/media/pci/go2001/Kconfig @@ -0,0 +1,11 @@ +config VIDEO_GO2001 + tristate "GO2001 codec driver" + depends on VIDEO_V4L2 && PCI + select VIDEOBUF2_DMA_SG + ---help--- + This driver supports the GO2001 PCI hardware codec. This codec + is present on ChromeOS based devices like the Acer ChromeBox + and ChromeBase 24 and LG ChromeBase as well. + + To compile this driver as a module, choose M here: the + module will be called go2001. diff --git a/drivers/media/pci/go2001/Makefile b/drivers/media/pci/go2001/Makefile new file mode 100644 index 0000000..20bad18 --- /dev/null +++ b/drivers/media/pci/go2001/Makefile @@ -0,0 +1,2 @@ +go2001-objs := go2001_driver.o go2001_hw.o +obj-$(CONFIG_VIDEO_GO2001) += go2001.o diff --git a/drivers/media/pci/go2001/go2001.h b/drivers/media/pci/go2001/go2001.h new file mode 100644 index 0000000..0e5ccfd --- /dev/null +++ b/drivers/media/pci/go2001/go2001.h @@ -0,0 +1,331 @@ +/* + * go2001 - GO2001 codec driver. + * + * Author : Pawel Osciak <posciak@xxxxxxxxxxxx> + * + * Copyright (C) 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef _MEDIA_PCI_GO2001_GO2001_H_ +#define _MEDIA_PCI_GO2001_GO2001_H_ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/sizes.h> +#include <linux/slab.h> + +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/videobuf2-core.h> + +#include "go2001_proto.h" + +struct go2001_msg { + struct list_head list_entry; + struct go2001_msg_payload payload; +}; + +static inline struct go2001_msg_hdr *msg_to_hdr(struct go2001_msg *msg) +{ + return &msg->payload.hdr; +} + +static inline void *msg_to_param(struct go2001_msg *msg) +{ + return msg->payload.param; +} + +struct go2001_msg_ring { + struct go2001_msg_ring_desc desc; + void __iomem *desc_iomem; + void __iomem *data_iomem; + spinlock_t lock; +}; + +struct go2001_hw_inst { + struct list_head inst_entry; + + u32 session_id; + u32 sequence_id; + u32 last_reply_seq_id; + + struct list_head pending_list; +}; + +struct go2001_dev { + struct pci_dev *pdev; + struct v4l2_device v4l2_dev; + struct video_device dec_vdev; + struct video_device enc_vdev; + + struct mutex lock; + + void __iomem *iomem; + size_t iomem_size; + + struct go2001_msg_ring tx_ring; + struct go2001_msg_ring rx_ring; + size_t max_param_size; + + spinlock_t irqlock; + struct list_head inst_list; + struct list_head new_inst_list; + struct go2001_hw_inst *curr_hw_inst; + + struct list_head ctx_list; + + u32 last_reply_inst_id; + u32 last_reply_seq_id; + struct go2001_msg last_reply; + + /* Last seq_id for init instance message. */ + u32 last_init_inst_seq_id; + wait_queue_head_t reply_wq; + + struct go2001_hw_inst ctrl_inst; + struct completion fw_completion; + /* Protected by irqlock */ + bool fw_loaded; + int msgs_in_flight; + struct delayed_work watchdog_work; + + /* Protected by lock */ + bool initialized; + + struct kmem_cache *msg_cache; +}; + +enum go2001_codec_mode { + CODEC_MODE_DECODER = (1 << 0), + CODEC_MODE_ENCODER = (1 << 1), +}; + +enum go2001_fmt_type { + FMT_TYPE_RAW, + FMT_TYPE_CODED, +}; + +struct go2001_fmt { + enum go2001_fmt_type type; + const char *desc; + u32 pixelformat; + unsigned int num_planes; + u32 hw_format; + unsigned long codec_modes; + /* Minimum pixel alignment for horizontal resolution. */ + unsigned int h_align; + /* Minimum pixel alignment for vertical resolution. */ + unsigned int v_align; + /* Bits per line */ + unsigned char plane_row_depth[VIDEO_MAX_PLANES]; + /* Bits per plane */ + unsigned char plane_depth[VIDEO_MAX_PLANES]; +}; + +struct go2001_ctrl { + u32 id; + enum v4l2_ctrl_type type; + const char *name; + s32 min; + s32 max; + u32 step; + s32 def; + u32 flags; +}; + +enum go2001_codec_state { + UNCOMMITTED, + COMMITTED, + NEED_HEADER_INFO, + RUNNING, + PAUSED, + RES_CHANGE, + ERROR, +}; + +struct go2001_frame_info { + unsigned int width; + unsigned int height; + unsigned int coded_width; + unsigned int coded_height; + unsigned int bytesperline[VIDEO_MAX_PLANES]; + size_t plane_size[VIDEO_MAX_PLANES]; +}; + +#define GO2001_REPLY_TIMEOUT_MS 10000 +#define GO2001_WATCHDOG_TIMEOUT_MS 2000 + +struct go2001_dma_desc { + /* DMA address of the map list */ + dma_addr_t dma_addr; + /* Number of entries on the map list */ + int num_entries; + /* CPU address of the map list */ + struct go2001_mmap_list_entry *mmap_list; + /* Size in bytes of the list */ + size_t list_size; + /* + * DMA address of the first entry on the list. + * Used to identify the buffer when passing it to the HW. + */ + u64 map_addr; +}; + +struct go2001_enc_params { + u32 bitrate; + u32 framerate_num; + u32 framerate_denom; + bool rc_enable; + bool request_keyframe; + bool multi_ref_frame_mode; + u32 frames_since_intra; +}; + +enum go2001_enc_param_change_bit { + GO2001_BITRATE_CHANGE, + GO2001_FRAMERATE_CHANGE, + GO2001_KEYFRAME_REQUESTED, + GO2001_PARAM_CHANGE_MAX, +}; + +struct go2001_runtime_enc_params { + struct go2001_enc_params enc_params; + unsigned long changed_mask[BITS_TO_LONGS(GO2001_PARAM_CHANGE_MAX)]; +}; + +struct go2001_buffer { + struct vb2_buffer vb; + struct list_head list; + struct go2001_dma_desc dma_desc[VIDEO_MAX_PLANES]; + bool mapped; + + struct go2001_msg *msg; + + struct go2001_runtime_enc_params rt_enc_params; + size_t partition_off[VP8_MAX_NUM_PARTITIONS]; + size_t partition_size[VP8_MAX_NUM_PARTITIONS]; +}; + +struct go2001_job { + struct go2001_buffer *src_buf; + struct go2001_buffer *dst_buf; +}; + +#define GO2001_MSG_POOL_SIZE VIDEO_MAX_FRAME +struct go2001_ctx { + struct list_head ctx_entry; + + struct mutex lock; + struct v4l2_fh v4l2_fh; + struct v4l2_ctrl_handler ctrl_handler; + struct go2001_dev *gdev; + enum go2001_codec_mode codec_mode; + + struct go2001_fmt *src_fmt; + struct go2001_fmt *dst_fmt; + struct go2001_frame_info finfo; + size_t bitstream_buf_size; + + enum go2001_codec_state state; + struct vb2_queue src_vq; + struct vb2_queue dst_vq; + + spinlock_t qlock; + struct list_head src_buf_q; + struct list_head src_resume_q; + struct list_head dst_buf_q; + + struct go2001_hw_inst hw_inst; + + /* Currently running job, if any. */ + struct go2001_job job; + + struct go2001_enc_params enc_params; + /* Will be applied to the next source buffer queued. */ + struct go2001_runtime_enc_params pending_rt_params; + + bool need_resume; +}; + +static inline struct go2001_buffer *vb_to_go2001_buf(struct vb2_buffer *vb) +{ + return container_of(vb, struct go2001_buffer, vb); +} + +static inline struct go2001_ctx *hw_inst_to_ctx(struct go2001_hw_inst *hw_inst) +{ + return container_of(hw_inst, struct go2001_ctx, hw_inst); +} + +static inline bool go2001_has_frame_info(struct go2001_ctx *ctx) +{ + if (ctx->codec_mode == CODEC_MODE_DECODER) + return ctx->dst_fmt && ctx->finfo.width != 0; + else + return ctx->src_fmt && ctx->finfo.width != 0; +} + +static inline struct go2001_ctx *fh_to_ctx(struct v4l2_fh *fh) +{ + return container_of(fh, struct go2001_ctx, v4l2_fh); +} + +static inline struct go2001_ctx *ctrl_to_ctx(struct v4l2_ctrl *ctrl) +{ + return container_of(ctrl->handler, struct go2001_ctx, ctrl_handler); +} + +extern unsigned int go2001_debug_level; +extern unsigned int go2001_fw_debug_level; + +#define go2001_err_nodev(fmt, args...) \ + pr_err("%s:%d " fmt, __func__, __LINE__, ##args) + +#define go2001_err(gdev, fmt, args...) \ + dev_err(&(gdev)->pdev->dev, "%s:%d " fmt, __func__, __LINE__, ##args) + +#define go2001_info(gdev, fmt, args...) \ + dev_info(&(gdev)->pdev->dev, "%s:%d " fmt, __func__, __LINE__, ##args) + +#define go2001_dbg(gdev, level, fmt, args...) \ + do { \ + if (go2001_debug_level >= (level)) \ + dev_info(&(gdev)->pdev->dev, "%s:%d " fmt, \ + __func__, __LINE__, ##args); \ + } while (0) + +#define go2001_trace(gdev) \ + go2001_dbg((gdev), 5, "%s\n", __func__) + +static inline void go2001_set_ctx_state(struct go2001_ctx *ctx, + enum go2001_codec_state state) +{ + go2001_dbg(ctx->gdev, 2, "ctx %p state change %d->%d\n", ctx, + ctx->state, state); + ctx->state = state; +} + +#define GO2001_MIN_NUM_BITSTREAM_BUFFERS 4 +#define GO2001_MIN_NUM_FRAME_BUFFERS 8 +#define GO2001_DEF_BITSTREAM_BUFFER_SIZE SZ_1M +#define GO2001_DEF_BITRATE 1000000 +#define GO2001_MAX_FPS 30 +#define GO2001_DEF_RC_ENABLE 1 +#define GO2001_VPX_MACROBLOCK_SIZE 16 + +#endif /* _MEDIA_PCI_GO2001_GO2001_H_ */ diff --git a/drivers/media/pci/go2001/go2001_driver.c b/drivers/media/pci/go2001/go2001_driver.c new file mode 100644 index 0000000..991e41c --- /dev/null +++ b/drivers/media/pci/go2001/go2001_driver.c @@ -0,0 +1,2563 @@ +/* + * go2001 - GO2001 codec driver. + * + * Author : Pawel Osciak <posciak@xxxxxxxxxxxx> + * + * Copyright (C) 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kmod.h> +#include <linux/mutex.h> +#include <linux/pci.h> + +#include <media/v4l2-event.h> +#include <media/videobuf2-dma-sg.h> + +#include "go2001.h" +#include "go2001_hw.h" + +#define DRIVER_NAME "go2001" +#define VDEV_NAME_DEC (DRIVER_NAME "-dec") +#define VDEV_NAME_ENC (DRIVER_NAME "-enc") + +#define DST_QUEUE_OFF_BASE BIT(30) + +unsigned int go2001_debug_level; +unsigned int go2001_fw_debug_level; + +module_param(go2001_debug_level, uint, 0644); +MODULE_PARM_DESC(go2001_debug_level, " verbosity level for debug messages."); + +module_param(go2001_fw_debug_level, uint, 0644); +MODULE_PARM_DESC(go2001_fw_debug_level, " verbosity level for firmware debug messages."); + +static void go2001_cleanup_queue(struct go2001_ctx *ctx, + struct list_head *buf_list) +{ + struct go2001_buffer *buf, *buf_tmp; + int i; + + assert_spin_locked(&ctx->qlock); + + list_for_each_entry_safe(buf, buf_tmp, buf_list, list) { + list_del(&buf->list); + for (i = 0; i < buf->vb.num_planes; ++i) + vb2_set_plane_payload(&buf->vb, i, 0); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + } +} + +static void go2001_ctx_error_locked(struct go2001_ctx *ctx) +{ + struct go2001_dev *gdev = ctx->gdev; + unsigned long flags; + + assert_spin_locked(&gdev->irqlock); + + go2001_err(ctx->gdev, "Setting error state for ctx %p, session_id %d\n", + ctx, ctx->hw_inst.session_id); + + go2001_cancel_hw_inst_locked(gdev, &ctx->hw_inst); + + spin_lock_irqsave(&ctx->qlock, flags); + + go2001_set_ctx_state(ctx, ERROR); + memset(&ctx->job, 0, sizeof(struct go2001_job)); + go2001_cleanup_queue(ctx, &ctx->src_buf_q); + go2001_cleanup_queue(ctx, &ctx->src_resume_q); + go2001_cleanup_queue(ctx, &ctx->dst_buf_q); + + spin_unlock_irqrestore(&ctx->qlock, flags); +} + +static void go2001_cancel_all_contexts(struct go2001_dev *gdev) +{ + unsigned long flags; + struct go2001_ctx *ctx; + + go2001_trace(gdev); + + WARN_ON(!mutex_is_locked(&gdev->lock)); + + spin_lock_irqsave(&gdev->irqlock, flags); + + go2001_cancel_all_hw_inst_locked(gdev); + + list_for_each_entry(ctx, &gdev->ctx_list, ctx_entry) + go2001_ctx_error_locked(ctx); + + spin_unlock_irqrestore(&gdev->irqlock, flags); + wake_up_all(&gdev->reply_wq); +} + +static struct go2001_fmt formats[] = { + { + .type = FMT_TYPE_RAW, + .desc = "32bit ARGB", + .pixelformat = V4L2_PIX_FMT_RGB32, + .num_planes = 1, + .hw_format = GO2001_FMT_RGB888, + .codec_modes = CODEC_MODE_DECODER | CODEC_MODE_ENCODER, + .h_align = 1, + .v_align = 1, + .plane_row_depth = { 32 }, + .plane_depth = { 32 }, + }, + { + .type = FMT_TYPE_RAW, + .desc = "NV12, Y/CbCr interleaved", + .pixelformat = V4L2_PIX_FMT_NV12M, + .num_planes = 2, + .hw_format = GO2001_FMT_YUV420_SEMIPLANAR, + .codec_modes = CODEC_MODE_DECODER | CODEC_MODE_ENCODER, + .h_align = 4, + .v_align = 2, + .plane_row_depth = { 8, 8 }, + .plane_depth = { 8, 4 }, + }, + { + .type = FMT_TYPE_RAW, + .desc = "YUV420M, Y, Cb, Cr 3-planar", + .pixelformat = V4L2_PIX_FMT_YUV420M, + .num_planes = 3, + .hw_format = GO2001_FMT_YUV420_PLANAR, + .codec_modes = CODEC_MODE_ENCODER, + .h_align = 4, + .v_align = 2, + .plane_row_depth = { 8, 4, 4 }, + .plane_depth = { 8, 2, 2 }, + }, + { + .type = FMT_TYPE_CODED, + .desc = "VP8 raw stream", + .pixelformat = V4L2_PIX_FMT_VP8, + .num_planes = 1, + .hw_format = GO2001_FMT_VP8, + .codec_modes = CODEC_MODE_DECODER | CODEC_MODE_ENCODER, + }, +}; + +static struct go2001_ctrl go2001_dec_ctrls[] = { + { + .id = V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, + .min = 1, + .max = 32, + .step = 1, + .def = 8, + }, +}; + +static struct go2001_ctrl go2001_enc_ctrls[] = { + { + .id = V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .min = 1, + .max = 1, + .step = 1, + .def = GO2001_DEF_RC_ENABLE, + }, + { + .id = V4L2_CID_MPEG_VIDEO_BITRATE, + .type = V4L2_CTRL_TYPE_INTEGER, + .min = 10000, + .max = 40000000, + .step = 1, + .def = GO2001_DEF_BITRATE, + }, + { + .id = V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME, + .type = V4L2_CTRL_TYPE_BUTTON, + }, +}; + +static struct go2001_fmt *go2001_find_fmt(struct go2001_ctx *ctx, + __u32 pixelformat) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(formats); ++i) { + if (formats[i].pixelformat == pixelformat && + (ctx->codec_mode & formats[i].codec_modes)) + return &formats[i]; + } + + go2001_dbg(ctx->gdev, 1, "Unsupported format %d.\n", pixelformat); + + return NULL; +} + +struct vb2_queue *go2001_get_vq(struct go2001_ctx *ctx, enum v4l2_buf_type type) +{ + return V4L2_TYPE_IS_OUTPUT(type) ? &ctx->src_vq : &ctx->dst_vq; +} + +static int go2001_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct go2001_dev *gdev = video_drvdata(file); + + strlcpy(cap->driver, DRIVER_NAME, sizeof(cap->driver)); + strlcpy(cap->card, "GO2001 PCIe codec", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", + pci_name(gdev->pdev)); + + cap->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING | + V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_VIDEO_OUTPUT_MPLANE; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +static int go2001_queue_setup(struct vb2_queue *q, unsigned int *num_buffers, + unsigned int *num_planes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(q); + struct go2001_fmt *f; + int i; + + go2001_trace(ctx->gdev); + + f = V4L2_TYPE_IS_OUTPUT(q->type) ? ctx->src_fmt : ctx->dst_fmt; + if (!f) { + go2001_err(ctx->gdev, "Format(s) not selected\n"); + return -EINVAL; + } + + if (f->type == FMT_TYPE_CODED) { + if (*num_buffers < GO2001_MIN_NUM_BITSTREAM_BUFFERS) + *num_buffers = GO2001_MIN_NUM_BITSTREAM_BUFFERS; + *num_planes = 1; + sizes[0] = ctx->bitstream_buf_size; + } else if (go2001_has_frame_info(ctx)) { + if (*num_buffers < GO2001_MIN_NUM_FRAME_BUFFERS) + *num_buffers = GO2001_MIN_NUM_FRAME_BUFFERS; + *num_planes = f->num_planes; + for (i = 0; i < f->num_planes; ++i) + sizes[i] = ctx->finfo.plane_size[i]; + } else { + go2001_err(ctx->gdev, "Invalid state\n"); + return -EINVAL; + } + + go2001_dbg(ctx->gdev, 2, "Num buffers: %d, planes: %d\n", *num_buffers, + *num_planes); + + for (i = 0; i < f->num_planes; ++i) + go2001_dbg(ctx->gdev, 2, "Plane %d, size: %d\n", i, sizes[i]); + + return 0; +} + +static int go2001_buf_init(struct vb2_buffer *vb) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + struct go2001_dev *gdev = ctx->gdev; + struct device *dev = &gdev->pdev->dev; + struct go2001_buffer *gbuf = vb_to_go2001_buf(vb); + struct go2001_dma_desc *dma_desc; + struct go2001_mmap_list_entry *mmap_list; + enum dma_data_direction dir; + struct scatterlist *sg; + struct sg_table *sgt; + u64 dma_addr; + u32 dma_len; + int plane, sgi; + int ret; + + go2001_trace(gdev); + + if (WARN_ON(gbuf->mapped)) + return -EINVAL; + + dir = V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) ? + DMA_TO_DEVICE : + DMA_FROM_DEVICE; + + for (plane = 0; plane < vb->num_planes; ++plane) { + dma_desc = &gbuf->dma_desc[plane]; + WARN_ON(!IS_ALIGNED(dma_desc->map_addr, 16)); + + sgt = vb2_dma_sg_plane_desc(vb, plane); + + if (!IS_ALIGNED(sgt->sgl->offset, 8) || + !IS_ALIGNED(vb2_plane_size(vb, plane), 8)) { + go2001_err(gdev, "Plane address/size not aligned %d/%zu\n", + sgt->sgl->offset, vb2_plane_size(vb, plane)); + + ret = -EINVAL; + goto err; + } + + dma_desc->num_entries = sgt->nents; + dma_desc->list_size = dma_desc->num_entries * + sizeof(struct go2001_mmap_list_entry); + dma_desc->mmap_list = dma_alloc_coherent(dev, + dma_desc->list_size, + &dma_desc->dma_addr, + GFP_KERNEL); + if (!dma_desc->mmap_list) { + go2001_err(gdev, "Failed allocating HW memory map\n"); + + ret = -ENOMEM; + goto err; + } + + go2001_dbg(gdev, 3, "Plane %d: mmap list size: %zu\n", plane, + dma_desc->list_size); + + mmap_list = dma_desc->mmap_list; + for_each_sg(sgt->sgl, sg, dma_desc->num_entries, sgi) { + dma_addr = sg_dma_address(sg); + dma_len = sg_dma_len(sg); + + mmap_list[sgi].dma_addr = cpu_to_le64(dma_addr); + mmap_list[sgi].size = cpu_to_le32(dma_len); + + go2001_dbg(gdev, 4, "Chunk %d: 0x%08llx, size %d\n", + sgi, dma_addr, dma_len); + } + } + + ret = go2001_map_buffer(ctx, gbuf); + if (ret) { + go2001_err(ctx->gdev, "Failed mapping buffer in HW\n"); + goto err; + } + + return 0; + +err: + for (; plane > 0; --plane) { + dma_desc = &gbuf->dma_desc[plane - 1]; + dma_free_coherent(dev, dma_desc->list_size, dma_desc->mmap_list, + dma_desc->dma_addr); + memset(dma_desc, 0, sizeof(struct go2001_dma_desc)); + } + + return ret; +} + +static int go2001_buf_prepare(struct vb2_buffer *vb) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + struct go2001_buffer *gbuf = vb_to_go2001_buf(vb); + + return go2001_prepare_gbuf(ctx, gbuf, + V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)); +} + +static void go2001_buf_finish(struct vb2_buffer *vb) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + struct go2001_buffer *gbuf = vb_to_go2001_buf(vb); + size_t plane_size; + void *vaddr, *ptr; + int i; + + go2001_finish_gbuf(ctx, gbuf); + + /* + * If this is a CAPTURE encoder buffer, we need to reassemble + * partitions, as there may be gaps between them. + */ + if (ctx->codec_mode != CODEC_MODE_ENCODER || + V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) + return; + + plane_size = vb2_plane_size(vb, 0); + vaddr = vb2_plane_vaddr(vb, 0); + if (!vaddr) { + go2001_err(ctx->gdev, "Unable to map buffer\n"); + return; + } + + ptr = vaddr; + + /* + * ith partition resides at partition_off[i] from start of the buffer + * and is of size partition_size[i]. As there may be gaps between + * partitions, slide them back together to remove the gaps. + */ + for (i = 0; i < VP8_MAX_NUM_PARTITIONS; ++i) { + if (gbuf->partition_size[i] == 0) + break; + + if (gbuf->partition_off[i] + gbuf->partition_size[i] > + plane_size) { + go2001_err(ctx->gdev, "Invalid partition %d info, off: 0x%zx, size: %zu, plane_size: %zu\n", + i, gbuf->partition_off[i], + gbuf->partition_size[i], plane_size); + + return; + } + + if (ptr != vaddr + gbuf->partition_off[i]) + memmove(ptr, vaddr + gbuf->partition_off[i], + gbuf->partition_size[i]); + + ptr += gbuf->partition_size[i]; + } +} + +static void go2001_buf_cleanup(struct vb2_buffer *vb) +{ + struct go2001_buffer *gbuf = vb_to_go2001_buf(vb); + struct go2001_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); + struct go2001_dev *gdev = ctx->gdev; + struct device *dev = &gdev->pdev->dev; + struct go2001_dma_desc *dma_desc; + enum dma_data_direction dir; + int plane; + + dir = V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) ? + DMA_TO_DEVICE : DMA_FROM_DEVICE; + + go2001_unmap_buffer(ctx, gbuf); + + /* Clean up regardless of whether unmap in HW succeeded or not. */ + for (plane = 0; plane < vb->num_planes; ++plane) { + dma_desc = &gbuf->dma_desc[plane]; + if (dma_desc->mmap_list) + dma_free_coherent(dev, dma_desc->list_size, + dma_desc->mmap_list, + dma_desc->dma_addr); + + memset(dma_desc, 0, sizeof(struct go2001_dma_desc)); + } +} + +static int go2001_enc_start_streaming(struct go2001_ctx *ctx, + enum v4l2_buf_type type) +{ + struct vb2_queue *q; + + switch (ctx->state) { + case COMMITTED: + case PAUSED: + if (V4L2_TYPE_IS_OUTPUT(type)) + q = &ctx->dst_vq; + else + q = &ctx->src_vq; + + if (vb2_is_streaming(q)) + go2001_set_ctx_state(ctx, RUNNING); + break; + + default: + go2001_err(ctx->gdev, "Invalid state %d\n", ctx->state); + + return -EINVAL; + } + + return 0; +} + +static int go2001_dec_start_streaming(struct go2001_ctx *ctx, + enum v4l2_buf_type type) +{ + struct vb2_queue *q; + + if (V4L2_TYPE_IS_OUTPUT(type)) { + if (ctx->state == COMMITTED) { + go2001_set_ctx_state(ctx, NEED_HEADER_INFO); + + return 0; + } + + q = &ctx->dst_vq; + } else { + q = &ctx->src_vq; + } + + if (ctx->state == PAUSED) { + if (vb2_is_streaming(q)) + go2001_set_ctx_state(ctx, RUNNING); + + return 0; + } + + go2001_err(ctx->gdev, "Invalid state %d\n", ctx->state); + + return -EINVAL; +} + +static int go2001_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(q); + unsigned long flags; + int ret = 0; + + go2001_dbg(ctx->gdev, 2, "for %s queue\n", + V4L2_TYPE_IS_OUTPUT(q->type) ? "OUTPUT" : "CAPTURE"); + + spin_lock_irqsave(&ctx->qlock, flags); + + if (ctx->state == ERROR) { + go2001_dbg(ctx->gdev, 1, "Instance %p in error state\n", ctx); + + spin_unlock_irqrestore(&ctx->qlock, flags); + return -EIO; + } + + if (ctx->codec_mode == CODEC_MODE_ENCODER) + ret = go2001_enc_start_streaming(ctx, q->type); + else + ret = go2001_dec_start_streaming(ctx, q->type); + + spin_unlock_irqrestore(&ctx->qlock, flags); + + if (!ret) + ret = go2001_schedule_frames(ctx); + + if (ret) + go2001_err(ctx->gdev, "Failed to start streaming\n"); + + return ret; +} + +static void go2001_stop_streaming(struct vb2_queue *q) +{ + struct go2001_ctx *ctx = vb2_get_drv_priv(q); + unsigned long flags; + + go2001_dbg(ctx->gdev, 2, "%p for %s queue\n", ctx, + V4L2_TYPE_IS_OUTPUT(q->type) ? "OUTPUT" : "CAPTURE"); + + go2001_wait_for_ctx_done(ctx); + + spin_lock_irqsave(&ctx->qlock, flags); + + switch (ctx->state) { + case NEED_HEADER_INFO: + go2001_set_ctx_state(ctx, COMMITTED); + break; + + case RES_CHANGE: + if (V4L2_TYPE_IS_OUTPUT(q->type)) + go2001_set_ctx_state(ctx, PAUSED); + break; + + case RUNNING: + go2001_set_ctx_state(ctx, PAUSED); + break; + + default: + break; + } + + WARN_ON(ctx->job.src_buf || ctx->job.dst_buf); + + if (V4L2_TYPE_IS_OUTPUT(q->type)) { + go2001_cleanup_queue(ctx, &ctx->src_buf_q); + go2001_cleanup_queue(ctx, &ctx->src_resume_q); + } else { + go2001_cleanup_queue(ctx, &ctx->dst_buf_q); + } + + spin_unlock_irqrestore(&ctx->qlock, flags); +} + +static void go2001_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_queue *vq = vb->vb2_queue; + struct go2001_ctx *ctx = vb2_get_drv_priv(vq); + struct go2001_buffer *gbuf = vb_to_go2001_buf(vb); + unsigned long flags; + + if (ctx->codec_mode == CODEC_MODE_ENCODER && + V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { + gbuf->rt_enc_params = ctx->pending_rt_params; + memset(&ctx->pending_rt_params, 0, + sizeof(ctx->pending_rt_params)); + } + + spin_lock_irqsave(&ctx->qlock, flags); + + if (V4L2_TYPE_IS_OUTPUT(vq->type)) + list_add_tail(&gbuf->list, &ctx->src_buf_q); + else + list_add_tail(&gbuf->list, &ctx->dst_buf_q); + + spin_unlock_irqrestore(&ctx->qlock, flags); + + go2001_schedule_frames(ctx); +} + +static const struct vb2_ops go2001_qops = { + .queue_setup = go2001_queue_setup, + + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + + .buf_init = go2001_buf_init, + .buf_prepare = go2001_buf_prepare, + .buf_finish = go2001_buf_finish, + .buf_cleanup = go2001_buf_cleanup, + + .start_streaming = go2001_start_streaming, + .stop_streaming = go2001_stop_streaming, + + .buf_queue = go2001_buf_queue, +}; + +static int go2001_init_vb2_queue(struct vb2_queue *q, struct go2001_ctx *ctx, + enum v4l2_buf_type type) +{ + q->type = type; + q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_USERPTR; + q->lock = &ctx->lock; + q->ops = &go2001_qops; + q->mem_ops = &vb2_dma_sg_memops; + q->drv_priv = ctx; + q->buf_struct_size = sizeof(struct go2001_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; + + if (ctx->codec_mode == CODEC_MODE_DECODER && V4L2_TYPE_IS_OUTPUT(type)) + q->allow_zero_bytesused = 1; + + return vb2_queue_init(q); +} + +static int go2001_dec_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + /* TODO */ + return 0; +} + +static int go2001_enc_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + /* TODO */ + return 0; +} + +static int go2001_enc_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct go2001_ctx *ctx = ctrl_to_ctx(ctrl); + + go2001_trace(ctx->gdev); + + switch (ctrl->id) { + case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: + break; + + case V4L2_CID_MPEG_VIDEO_BITRATE: + set_bit(GO2001_BITRATE_CHANGE, + ctx->pending_rt_params.changed_mask); + ctx->pending_rt_params.enc_params.bitrate = ctrl->val; + go2001_dbg(ctx->gdev, 2, "Bitrate changed to %d bps.\n", + ctx->pending_rt_params.enc_params.bitrate); + break; + + case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: + set_bit(GO2001_KEYFRAME_REQUESTED, + ctx->pending_rt_params.changed_mask); + ctx->pending_rt_params.enc_params.request_keyframe = true; + go2001_dbg(ctx->gdev, 2, "Keyframe requested.\n"); + break; + + default: + go2001_dbg(ctx->gdev, 1, "Unsupported control id=%d, ignoring.\n", + ctrl->id); + break; + } + + return 0; +} + +static const struct v4l2_ctrl_ops go2001_dec_ctrl_ops = { + .g_volatile_ctrl = go2001_dec_g_volatile_ctrl, +}; + +static const struct v4l2_ctrl_ops go2001_enc_ctrl_ops = { + .s_ctrl = go2001_enc_s_ctrl, + .g_volatile_ctrl = go2001_enc_g_volatile_ctrl, +}; + +static int go2001_init_ctrl_handler(struct go2001_ctx *ctx) +{ + struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler; + const struct v4l2_ctrl_ops *ops; + struct go2001_ctrl *ctrls; + struct go2001_ctrl *ctrl; + int num_ctrls; + int ret; + int i; + + if (ctx->codec_mode == CODEC_MODE_DECODER) { + ctrls = go2001_dec_ctrls; + num_ctrls = ARRAY_SIZE(go2001_dec_ctrls); + ops = &go2001_dec_ctrl_ops; + } else { + ctrls = go2001_enc_ctrls; + num_ctrls = ARRAY_SIZE(go2001_enc_ctrls); + ops = &go2001_enc_ctrl_ops; + } + + ret = v4l2_ctrl_handler_init(hdl, num_ctrls); + if (ret) + return ret; + + for (i = 0; i < num_ctrls; ++i) { + ctrl = &ctrls[i]; + if (V4L2_CTRL_DRIVER_PRIV(ctrl->id)) { + struct v4l2_ctrl_config cfg; + + memset(&cfg, 0, sizeof(struct v4l2_ctrl_config)); + cfg.ops = ops; + cfg.id = ctrl->id; + cfg.name = ctrl->name; + cfg.type = ctrl->type; + cfg.min = ctrl->min; + cfg.max = ctrl->max; + cfg.def = ctrl->def; + cfg.step = ctrl->step; + cfg.flags = ctrl->flags; + + v4l2_ctrl_new_custom(hdl, &cfg, NULL); + } else { + v4l2_ctrl_new_std(hdl, ops, ctrl->id, ctrl->min, + ctrl->max, ctrl->step, ctrl->def); + } + } + + ret = hdl->error; + if (ret) + v4l2_ctrl_handler_free(hdl); + else + ctx->v4l2_fh.ctrl_handler = hdl; + + return ret; +} + +static int go2001_init_ctx(struct go2001_dev *gdev, struct go2001_ctx *ctx, + struct file *file, struct video_device *vdev, + enum go2001_codec_mode mode) +{ + int ret; + + ctx->gdev = gdev; + ctx->codec_mode = mode; + + mutex_init(&ctx->lock); + spin_lock_init(&ctx->qlock); + INIT_LIST_HEAD(&ctx->src_buf_q); + INIT_LIST_HEAD(&ctx->src_resume_q); + INIT_LIST_HEAD(&ctx->dst_buf_q); + v4l2_fh_init(&ctx->v4l2_fh, vdev); + ctx->state = UNCOMMITTED; + go2001_init_hw_inst(&ctx->hw_inst, 0); + + ctx->bitstream_buf_size = GO2001_DEF_BITSTREAM_BUFFER_SIZE; + if (ctx->codec_mode == CODEC_MODE_DECODER) { + ctx->src_fmt = go2001_find_fmt(ctx, V4L2_PIX_FMT_VP8); + ctx->dst_fmt = go2001_find_fmt(ctx, V4L2_PIX_FMT_RGB32); + } else { + ctx->src_fmt = go2001_find_fmt(ctx, V4L2_PIX_FMT_NV12M); + ctx->dst_fmt = go2001_find_fmt(ctx, V4L2_PIX_FMT_VP8); + ctx->enc_params.rc_enable = GO2001_DEF_RC_ENABLE; + ctx->enc_params.request_keyframe = true; + ctx->enc_params.bitrate = GO2001_DEF_BITRATE; + ctx->enc_params.framerate_num = GO2001_MAX_FPS; + ctx->enc_params.framerate_denom = 1; + } + + ret = go2001_init_ctrl_handler(ctx); + if (ret) + return ret; + + ret = go2001_init_vb2_queue(&ctx->src_vq, ctx, + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); + if (ret) + return ret; + + ret = go2001_init_vb2_queue(&ctx->dst_vq, ctx, + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); + if (ret) + return ret; + + mutex_lock(&gdev->lock); + list_add_tail(&ctx->ctx_entry, &gdev->ctx_list); + mutex_unlock(&gdev->lock); + + file->private_data = &ctx->v4l2_fh; + v4l2_fh_add(&ctx->v4l2_fh); + + return 0; +} + +static void go2001_release_ctx(struct go2001_ctx *ctx) +{ + unsigned long flags; + + vb2_queue_release(&ctx->src_vq); + vb2_queue_release(&ctx->dst_vq); + + go2001_release_codec(ctx); + + mutex_lock(&ctx->gdev->lock); + spin_lock_irqsave(&ctx->qlock, flags); + list_del(&ctx->ctx_entry); + spin_unlock_irqrestore(&ctx->qlock, flags); + mutex_unlock(&ctx->gdev->lock); + + v4l2_fh_del(&ctx->v4l2_fh); + v4l2_fh_exit(&ctx->v4l2_fh); + + v4l2_ctrl_handler_free(&ctx->ctrl_handler); +} + +static int go2001_open(struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct go2001_dev *gdev = video_drvdata(file); + struct go2001_ctx *ctx; + enum go2001_codec_mode mode; + int ret = 0; + + go2001_trace(gdev); + + mutex_lock(&gdev->lock); + if (!gdev->initialized) { + ret = go2001_init(gdev); + if (!ret) + gdev->initialized = true; + } + mutex_unlock(&gdev->lock); + + if (ret) + return ret; + + if (vdev->index == gdev->dec_vdev.index) { + mode = CODEC_MODE_DECODER; + } else if (vdev->index == gdev->enc_vdev.index) { + mode = CODEC_MODE_ENCODER; + } else { + go2001_err(gdev, "Invalid video node\n"); + return -ENXIO; + } + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ret = go2001_init_ctx(gdev, ctx, file, vdev, mode); + if (ret) { + go2001_err(gdev, "Failed initializing context\n"); + kfree(ctx); + return ret; + } + + go2001_dbg(ctx->gdev, 1, "Opened ctx %p\n", ctx); + + return 0; +} + +static int go2001_release(struct file *file) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + unsigned long flags; + + go2001_dbg(ctx->gdev, 1, "Releasing ctx %p\n", ctx); + + spin_lock_irqsave(&ctx->qlock, flags); + go2001_set_ctx_state(ctx, UNCOMMITTED); + spin_unlock_irqrestore(&ctx->qlock, flags); + + go2001_wait_for_ctx_done(ctx); + go2001_release_ctx(ctx); + kfree(ctx); + + return 0; +} + +static unsigned int go2001_poll(struct file *file, + struct poll_table_struct *wait) +{ + unsigned long req_events = poll_requested_events(wait); + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *src_q = &ctx->src_vq; + struct vb2_queue *dst_q = &ctx->dst_vq; + struct vb2_buffer *src_vb = NULL, *dst_vb = NULL; + struct v4l2_fh *fh = &ctx->v4l2_fh; + unsigned long flags; + unsigned int rc = 0; + + if (v4l2_event_pending(fh)) + rc = POLLPRI; + else if (req_events & POLLPRI) + poll_wait(file, &fh->wait, wait); + + if (!(req_events & (POLLOUT | POLLWRNORM | POLLIN | POLLRDNORM))) + return rc; + + if ((!vb2_is_streaming(src_q) || list_empty(&src_q->queued_list)) && + (!vb2_is_streaming(dst_q) || list_empty(&dst_q->queued_list))) { + rc |= POLLERR; + return rc; + } + + poll_wait(file, &src_q->done_wq, wait); + poll_wait(file, &dst_q->done_wq, wait); + + spin_lock_irqsave(&src_q->done_lock, flags); + if (!list_empty(&src_q->done_list)) + src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer, + done_entry); + if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE || + src_vb->state == VB2_BUF_STATE_ERROR)) + rc |= POLLOUT | POLLWRNORM; + spin_unlock_irqrestore(&src_q->done_lock, flags); + + spin_lock_irqsave(&dst_q->done_lock, flags); + if (!list_empty(&dst_q->done_list)) + dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer, + done_entry); + if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE || + dst_vb->state == VB2_BUF_STATE_ERROR)) + rc |= POLLIN | POLLRDNORM; + spin_unlock_irqrestore(&dst_q->done_lock, flags); + + return rc; +} + +static int go2001_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; + int ret; + + if (offset < DST_QUEUE_OFF_BASE) { + ret = vb2_mmap(&ctx->src_vq, vma); + } else { + vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT); + ret = vb2_mmap(&ctx->dst_vq, vma); + } + + return ret; +} + +static int go2001_handle_init_reply(struct go2001_dev *gdev, + struct go2001_msg *msg, + u32 status) +{ + struct go2001_init_decoder_reply *reply = msg_to_param(msg); + struct go2001_hw_inst *hw_inst; + struct go2001_ctx *ctx = NULL; + int ret = 0; + + list_for_each_entry(hw_inst, &gdev->new_inst_list, inst_entry) { + if (hw_inst->sequence_id == gdev->last_reply_seq_id) { + ctx = hw_inst_to_ctx(hw_inst); + break; + } + } + + if (!ctx) { + go2001_err(gdev, "No ctx awaiting VM_INIT_*, dropping\n"); + return -EIO; + } + + if (gdev->curr_hw_inst == &ctx->hw_inst) + gdev->curr_hw_inst = NULL; + + list_del_init(&ctx->hw_inst.inst_entry); + + switch (status) { + case GO2001_STATUS_OK: + go2001_init_hw_inst(&ctx->hw_inst, reply->session_id); + list_add_tail(&ctx->hw_inst.inst_entry, &ctx->gdev->inst_list); + break; + + case GO2001_STATUS_RES_NA: + ret = -ENOMEM; + break; + + case GO2001_STATUS_INVALID_PARAM: + ret = -EINVAL; + break; + + default: + ret = -EIO; + break; + } + + if (ret) + go2001_ctx_error_locked(ctx); + + return ret; +} + +static void go2001_handle_release_instance_reply(struct go2001_ctx *ctx) +{ + unsigned long flags; + + spin_lock_irqsave(&ctx->qlock, flags); + ctx->hw_inst.session_id = 0; + spin_unlock_irqrestore(&ctx->qlock, flags); +} + +static void go2001_calc_finfo(struct go2001_ctx *ctx, struct go2001_fmt *fmt, + struct go2001_frame_info *finfo, + unsigned int width, unsigned int height) +{ + int i; + + finfo->width = round_up(width, fmt->h_align); + finfo->height = round_up(height, fmt->v_align); + finfo->coded_width = round_up(finfo->width, GO2001_VPX_MACROBLOCK_SIZE); + finfo->coded_height = round_up(finfo->height, + GO2001_VPX_MACROBLOCK_SIZE); + + go2001_dbg(ctx->gdev, 2, "Visible (coded) resolution: %ux%u (%ux%u)\n", + finfo->width, finfo->height, finfo->coded_width, + finfo->coded_height); + + for (i = 0; i < fmt->num_planes; ++i) { + finfo->bytesperline[i] = + (finfo->coded_width * fmt->plane_row_depth[i]) / 8; + finfo->plane_size[i] = (finfo->coded_width * + finfo->coded_height * + fmt->plane_depth[i]) / 8; + go2001_dbg(ctx->gdev, 2, "Plane %d: bpl: %u, size: %zu\n", + i, finfo->bytesperline[i], finfo->plane_size[i]); + } +} + +static int go2001_handle_new_info(struct go2001_ctx *ctx, + struct go2001_get_info_reply *reply) +{ + struct go2001_frame_info *finfo = &ctx->finfo; + struct go2001_fmt *fmt; + + fmt = (ctx->codec_mode == CODEC_MODE_DECODER) ? + ctx->dst_fmt : ctx->src_fmt; + + go2001_dbg(ctx->gdev, 2, "HW reports new resolution: %ux%u (%ux%u)\n", + reply->visible_width, reply->visible_height, + reply->coded_width, reply->coded_height); + + go2001_calc_finfo(ctx, fmt, finfo, reply->visible_width, + reply->visible_height); + + if (finfo->width != reply->visible_width || + finfo->height != reply->visible_height || + finfo->coded_width != reply->coded_width || + finfo->coded_height != reply->coded_height) { + go2001_err(ctx->gdev, "Invalid resolution from the HW\n"); + return -EINVAL; + } + + return 0; +} + +static int go2001_handle_get_info_reply(struct go2001_ctx *ctx, + struct go2001_msg *msg, u32 status) +{ + struct go2001_get_info_reply *reply = msg_to_param(msg); + + if (status != GO2001_STATUS_OK) + return -EIO; + + return go2001_handle_new_info(ctx, reply); +} + +static int go2001_fill_dst_buf_info(struct go2001_ctx *ctx, + struct go2001_job *job, + struct go2001_msg *reply, bool error) +{ + struct vb2_v4l2_buffer *src_vbuf; + struct vb2_v4l2_buffer *dst_vbuf; + int i; + + src_vbuf = to_vb2_v4l2_buffer(&job->src_buf->vb); + dst_vbuf = to_vb2_v4l2_buffer(&job->dst_buf->vb); + + switch (ctx->codec_mode) { + case CODEC_MODE_DECODER: + for (i = 0; i < dst_vbuf->vb2_buf.num_planes; ++i) { + vb2_set_plane_payload(&dst_vbuf->vb2_buf, i, + error ? + 0 : + ctx->finfo.plane_size[i]); + } + break; + + case CODEC_MODE_ENCODER: { + struct go2001_empty_buffer_enc_reply *enc_reply = + msg_to_param(reply); + struct go2001_buffer *gbuf; + + gbuf = vb_to_go2001_buf(&dst_vbuf->vb2_buf); + + memset(gbuf->partition_off, 0, sizeof(gbuf->partition_off)); + memset(gbuf->partition_size, 0, sizeof(gbuf->partition_size)); + + /* + * Partitions may have gaps between them, we will have to + * reassemble the bitstream later in buf_finish. For now just + * save the size and offset of each partition and set the + * payload for the buffer to the sum of sizes (returned in + * enc_reply->payload_size). + */ + if (enc_reply->payload_size > + vb2_plane_size(&dst_vbuf->vb2_buf, 0) || error) { + vb2_set_plane_payload(&dst_vbuf->vb2_buf, 0, 0); + return -EINVAL; + } + + vb2_set_plane_payload(&dst_vbuf->vb2_buf, 0, + enc_reply->payload_size); + + for (i = 0; i < VP8_MAX_NUM_PARTITIONS; ++i) { + gbuf->partition_off[i] = enc_reply->partition_off[i]; + gbuf->partition_size[i] = enc_reply->partition_size[i]; + } + + dst_vbuf->flags = 0; + if (enc_reply->frame_type == + GO2001_EMPTY_BUF_ENC_FRAME_KEYFRAME) + dst_vbuf->flags = V4L2_BUF_FLAG_KEYFRAME; + break; + } + default: + WARN_ON(1); + break; + } + + dst_vbuf->timecode = src_vbuf->timecode; + dst_vbuf->vb2_buf.timestamp = src_vbuf->vb2_buf.timestamp; + + go2001_dbg(ctx->gdev, 5, "Returning frame ts=%llu\n", + dst_vbuf->vb2_buf.timestamp); + + return 0; +} + +static int go2001_handle_empty_buffer_reply(struct go2001_ctx *ctx, + struct go2001_msg *msg, u32 status) +{ + enum vb2_buffer_state src_state = VB2_BUF_STATE_DONE; + enum vb2_buffer_state dst_state = VB2_BUF_STATE_DONE; + struct go2001_job *job; + struct go2001_buffer *src_buf, *dst_buf; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&ctx->qlock, flags); + job = &ctx->job; + src_buf = job->src_buf; + if (!src_buf) { + go2001_err(ctx->gdev, "No src buffer!\n"); + ret = -EIO; + goto out; + } + + list_del(&src_buf->list); + + dst_buf = job->dst_buf; + + switch (status) { + case GO2001_STATUS_NEW_PICTURE_SIZE: { + static const struct v4l2_event ev_src_ch = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + struct go2001_empty_buffer_dec_reply *dec_reply = + msg_to_param(msg); + + WARN_ON(ctx->state != NEED_HEADER_INFO && + ctx->state != RUNNING); + + go2001_handle_new_info(ctx, &dec_reply->info); + v4l2_event_queue_fh(&ctx->v4l2_fh, &ev_src_ch); + go2001_set_ctx_state(ctx, RES_CHANGE); + /* Fallthrough */ + } + case GO2001_STATUS_WAITING_PICTURE_SIZE_CHANGED: + ctx->need_resume = true; + /* + * We will retry this frame after reallocating output buffers. + * Add the source buffer to the resume queue, which will + * be spliced in front of the source queue after reallocation. + */ + go2001_dbg(ctx->gdev, 3, "Pending buffer %p\n", src_buf); + list_add_tail(&src_buf->list, &ctx->src_resume_q); + break; + + case GO2001_STATUS_STREAM_ERROR: + src_state = VB2_BUF_STATE_ERROR; + /* Fallthrough */ + case GO2001_STATUS_OK: + vb2_buffer_done(&src_buf->vb, src_state); + if (!dst_buf) + break; + + if (go2001_fill_dst_buf_info(ctx, job, msg, + dst_state == VB2_BUF_STATE_ERROR)) + dst_state = VB2_BUF_STATE_ERROR; + + list_del(&dst_buf->list); + vb2_buffer_done(&dst_buf->vb, dst_state); + break; + + case GO2001_STATUS_NO_OUTPUT: + vb2_buffer_done(&src_buf->vb, src_state); + /* + * No output produced, reuse dst_buf for next job + * without returning the buffer to userspace. + */ + break; + + default: + ret = -EIO; + break; + } + +out: + job->src_buf = NULL; + job->dst_buf = NULL; + spin_unlock_irqrestore(&ctx->qlock, flags); + + return ret; +} + +static void go2001_handle_get_version_reply(struct go2001_dev *gdev, + struct go2001_msg *msg) +{ + struct go2001_get_version_reply *reply = msg_to_param(msg); + + dev_info(&gdev->pdev->dev, "GO2001 ver: %d/%d, VP8 decoder: %d/%d VP8 encoder: %d/%d, VP9 decoder: %d/%d\n", + reply->hw_ver, reply->sw_ver, reply->vp8dec_hw_ver, + reply->vp8dec_sw_ver, reply->vp8enc_hw_ver, + reply->vp8enc_sw_ver, reply->vp9dec_hw_ver, + reply->vp9dec_sw_ver); +} + +static inline int go2001_handle_reply_default(struct go2001_dev *gdev, u32 type, + u32 status) +{ + int ret = 0; + + switch (status) { + case GO2001_STATUS_OK: + break; + + case GO2001_STATUS_NEW_PICTURE_SIZE: + case GO2001_STATUS_WAITING_PICTURE_SIZE_CHANGED: + case GO2001_STATUS_STREAM_ERROR: + case GO2001_STATUS_NO_OUTPUT: + WARN_ON(type != GO2001_VM_EMPTY_BUFFER); + go2001_err(gdev, "Unexpected status in reply\n"); + ret = -EIO; + break; + + case GO2001_STATUS_RES_NA: + go2001_err(gdev, "Hardware ran out of resources\n"); + ret = -ENOMEM; + break; + + case GO2001_STATUS_INVALID_PARAM: + go2001_err(gdev, "Invalid parameters\n"); + ret = -EINVAL; + break; + + default: + go2001_err(gdev, "Invalid status in reply\n"); + ret = -EIO; + break; + } + + return ret; +} + +static struct go2001_hw_inst *find_hw_inst_by_id_locked(struct go2001_dev *gdev, + u32 session_id) +{ + struct go2001_hw_inst *hw_inst; + + list_for_each_entry(hw_inst, &gdev->inst_list, inst_entry) + if (hw_inst->session_id == session_id) + return hw_inst; + + return NULL; +} + +static int go2001_process_reply(struct go2001_dev *gdev, + struct go2001_msg *reply) +{ + struct go2001_hw_inst *hw_inst; + struct go2001_ctx *ctx = NULL; + struct go2001_msg_hdr *hdr = msg_to_hdr(reply); + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&gdev->irqlock, flags); + + hw_inst = find_hw_inst_by_id_locked(gdev, hdr->session_id); + if (!hw_inst) { + go2001_err(gdev, "Got reply for an invalid instance id %d\n", + hdr->session_id); + ret = -EIO; + goto out; + } + + if (hdr->type != GO2001_VM_EVENT_ASSERT && + hdr->type != GO2001_VM_EVENT_LOG) { + if (WARN_ON(gdev->msgs_in_flight == 0)) { + go2001_err(gdev, "Unexpected reply without a request\n"); + ret = -EIO; + goto out; + } + + cancel_delayed_work(&gdev->watchdog_work); + --gdev->msgs_in_flight; + if (gdev->msgs_in_flight > 0) + schedule_delayed_work(&gdev->watchdog_work, + msecs_to_jiffies(GO2001_WATCHDOG_TIMEOUT_MS)); + + go2001_dbg(gdev, 3, "Messages in flight: %d\n", + gdev->msgs_in_flight); + + gdev->last_reply_inst_id = hdr->session_id; + gdev->last_reply_seq_id = hdr->sequence_id; + + WARN_ON(hw_inst->last_reply_seq_id + 1 != hdr->sequence_id); + hw_inst->last_reply_seq_id = hdr->sequence_id; + } + + if (hdr->session_id != 0) + ctx = hw_inst_to_ctx(hw_inst); + + switch (hdr->type) { + case GO2001_VM_INIT_DECODER: + case GO2001_VM_INIT_ENCODER: + go2001_dbg(gdev, 5, "VM_INIT reply\n"); + ret = go2001_handle_init_reply(gdev, reply, hdr->status); + break; + + case GO2001_VM_GET_VERSION: + go2001_dbg(gdev, 5, "VM_GET_VERSION reply\n"); + go2001_handle_get_version_reply(gdev, reply); + break; + + case GO2001_VM_SET_MMAP: + case GO2001_VM_RELEASE_MMAP: + go2001_dbg(gdev, 5, "VM_*_MMAP reply\n"); + ret = go2001_handle_reply_default(gdev, hdr->type, hdr->status); + break; + + case GO2001_VM_EMPTY_BUFFER: + go2001_dbg(gdev, 5, "VM_EMPTY_BUFFER reply\n"); + ret = go2001_handle_empty_buffer_reply(ctx, reply, hdr->status); + break; + + case GO2001_VM_GET_INFO: + go2001_dbg(gdev, 5, "VM_GET_INFO reply\n"); + ret = go2001_handle_get_info_reply(ctx, reply, hdr->status); + break; + + case GO2001_VM_SET_CTRL: + go2001_dbg(gdev, 5, "VM_SET_CTRL reply\n"); + ret = go2001_handle_reply_default(gdev, hdr->type, hdr->status); + break; + + case GO2001_VM_RELEASE: + go2001_dbg(gdev, 5, "VM_RELEASE reply\n"); + go2001_handle_release_instance_reply(ctx); + break; + + case GO2001_VM_EVENT_ASSERT: { + struct go2001_event_assert_reply *a = msg_to_param(reply); + + a->filename[ARRAY_SIZE(a->filename) - 1] = '\0'; + a->funcname[ARRAY_SIZE(a->funcname) - 1] = '\0'; + a->expr[ARRAY_SIZE(a->expr) - 1] = '\0'; + go2001_err(gdev, "FW ASSERT at %s:%d in %s, executing %s\n", + a->filename, a->line_no, a->funcname, a->expr); + ret = -EIO; + break; + } + + case GO2001_VM_EVENT_LOG: { + struct go2001_event_log_reply *l = msg_to_param(reply); + + l->data[ARRAY_SIZE(l->data) - 1] = '\0'; + go2001_err(gdev, "VM_EVENT_LOG: %s\n", l->data); + break; + } + + case GO2001_VM_SET_LOG_LEVEL: { + struct go2001_set_log_level_reply *l = msg_to_param(reply); + + go2001_dbg(gdev, 1, "VM_SET_LOG_LEVEL: %d\n", l->level); + ret = go2001_handle_reply_default(gdev, hdr->type, hdr->status); + break; + } + + default: + go2001_err(gdev, "Unexpected reply [%d:%d], type=0x%x\n", + hdr->session_id, hdr->sequence_id, hdr->type); + ret = -EIO; + break; + } + +out: + if (ret) { + go2001_err(gdev, "Error %d for reply [%d:%d] type=0x%x, status=0x%x\n", + ret, hdr->session_id, hdr->sequence_id, hdr->type, + hdr->status); + if (ctx) + go2001_ctx_error_locked(ctx); + } + + spin_unlock_irqrestore(&gdev->irqlock, flags); + + if (ctx && ret == 0) + go2001_schedule_frames(ctx); + /* + * Critical failure only on EIO, otherwise we may be able to continue + * using other instances. + */ + return ret == -EIO ? ret : 0; +} + +static void go2001_watchdog(struct work_struct *work) +{ + int ret; + struct go2001_dev *gdev = container_of(to_delayed_work(work), + struct go2001_dev, + watchdog_work); + + go2001_err(gdev, "Watchdog resetting firmware\n"); + + mutex_lock(&gdev->lock); + + go2001_cancel_all_contexts(gdev); + gdev->msgs_in_flight = 0; + + ret = go2001_init(gdev); + if (ret) { + gdev->initialized = false; + go2001_err(gdev, "Failed resetting firmware\n"); + } + + mutex_unlock(&gdev->lock); +} + +static irqreturn_t go2001_irq(int irq, void *priv) +{ + struct go2001_dev *gdev = priv; + struct go2001_msg *reply = &gdev->last_reply; + unsigned long flags; + int ret; + + spin_lock_irqsave(&gdev->irqlock, flags); + if (unlikely(!gdev->fw_loaded)) { + gdev->fw_loaded = true; + complete(&gdev->fw_completion); + spin_unlock_irqrestore(&gdev->irqlock, flags); + return IRQ_HANDLED; + } + spin_unlock_irqrestore(&gdev->irqlock, flags); + + while (go2001_get_reply(gdev, reply) == 0) { + ret = go2001_process_reply(gdev, reply); + wake_up_all(&gdev->reply_wq); + if (ret) + return IRQ_HANDLED; + } + + go2001_send_pending(gdev); + + return IRQ_HANDLED; +} + +static const struct v4l2_file_operations go2001_fops = { + .owner = THIS_MODULE, + .open = go2001_open, + .release = go2001_release, + .unlocked_ioctl = video_ioctl2, + .poll = go2001_poll, + .mmap = go2001_mmap, +}; + +static int go2001_enum_fmt(enum go2001_codec_mode codec_mode, + enum go2001_fmt_type type, struct v4l2_fmtdesc *f) +{ + struct go2001_fmt *fmt; + int num_matched = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(formats); ++i) { + fmt = &formats[i]; + if (!(codec_mode & fmt->codec_modes) || fmt->type != type) + continue; + + if (num_matched == f->index) { + strlcpy(f->description, fmt->desc, + sizeof(f->description)); + f->pixelformat = fmt->pixelformat; + if (type == FMT_TYPE_CODED) + f->flags = V4L2_FMT_FLAG_COMPRESSED; + + return 0; + } + + ++num_matched; + } + + return -EINVAL; +} + +static int go2001_enum_fmt_cap(struct file *file, void *fh, + struct v4l2_fmtdesc *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (ctx->codec_mode == CODEC_MODE_DECODER) + return go2001_enum_fmt(ctx->codec_mode, FMT_TYPE_RAW, f); + + return go2001_enum_fmt(ctx->codec_mode, FMT_TYPE_CODED, f); +} + +static int go2001_enum_fmt_out(struct file *file, void *fh, + struct v4l2_fmtdesc *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (ctx->codec_mode == CODEC_MODE_DECODER) + return go2001_enum_fmt(ctx->codec_mode, FMT_TYPE_CODED, f); + + return go2001_enum_fmt(ctx->codec_mode, FMT_TYPE_RAW, f); +} + +static int fill_v4l2_format_raw(struct v4l2_format *f, struct go2001_fmt *gfmt, + struct go2001_frame_info *finfo) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + int i; + + pix_mp->width = finfo->coded_width; + pix_mp->height = finfo->coded_height; + pix_mp->pixelformat = gfmt->pixelformat; + pix_mp->field = V4L2_FIELD_NONE; + pix_mp->num_planes = gfmt->num_planes; + + for (i = 0; i < pix_mp->num_planes; ++i) { + pix_mp->plane_fmt[i].bytesperline = finfo->bytesperline[i]; + pix_mp->plane_fmt[i].sizeimage = finfo->plane_size[i]; + } + + return 0; +} + +static void fill_v4l2_format_coded(struct v4l2_format *f, + struct go2001_fmt *gfmt, size_t buf_size) +{ + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + + pix_mp->width = 0; + pix_mp->height = 0; + pix_mp->pixelformat = gfmt->pixelformat; + pix_mp->field = V4L2_FIELD_NONE; + pix_mp->num_planes = 1; + pix_mp->plane_fmt[0].bytesperline = 0; + + if (buf_size != 0) { + pix_mp->plane_fmt[0].sizeimage = buf_size; + } else if (pix_mp->plane_fmt[0].sizeimage == 0) { + pix_mp->plane_fmt[0].sizeimage = + GO2001_DEF_BITSTREAM_BUFFER_SIZE; + } +} + +static int go2001_dec_g_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (!go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "Frame info not available yet\n"); + return -EINVAL; + } + + return fill_v4l2_format_raw(f, ctx->dst_fmt, &ctx->finfo); +} + +static int go2001_enc_g_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (!go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "Frame info not available yet\n"); + return -EINVAL; + } + + return fill_v4l2_format_raw(f, ctx->dst_fmt, &ctx->finfo); +} + +static int go2001_dec_g_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (!ctx->src_fmt) { + go2001_dbg(ctx->gdev, 1, "Format not ready yet\n"); + return -EINVAL; + } + + fill_v4l2_format_coded(f, ctx->src_fmt, ctx->bitstream_buf_size); + + return 0; +} + +static int go2001_enc_g_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + + if (!ctx->dst_fmt) { + go2001_dbg(ctx->gdev, 1, "Format not ready yet\n"); + return -EINVAL; + } + + fill_v4l2_format_coded(f, ctx->dst_fmt, ctx->bitstream_buf_size); + + return 0; +} + +static struct go2001_fmt *__go2001_dec_try_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct go2001_fmt *fmt; + + fmt = go2001_find_fmt(ctx, pix_mp->pixelformat); + if (!fmt || fmt->type != FMT_TYPE_CODED) + return NULL; + + fill_v4l2_format_coded(f, fmt, 0); + + return fmt; +} + +static int go2001_dec_try_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_fmt *fmt = __go2001_dec_try_fmt_out(file, fh, f); + + return fmt ? 0 : -EINVAL; +} + +static struct go2001_fmt *__go2001_dec_try_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct go2001_fmt *fmt; + + /* + * S_FMT on CAPTURE allows setting destination fourcc only, + * resolution is set after parsing headers and comes from the HW. + */ + fmt = go2001_find_fmt(ctx, pix_mp->pixelformat); + if (!fmt || fmt->type != FMT_TYPE_RAW) + return NULL; + + return fmt; +} + +static int go2001_dec_try_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_fmt *fmt = __go2001_dec_try_fmt_cap(file, fh, f); + + return fmt ? 0 : -EINVAL; +} + +static struct go2001_fmt *__go2001_enc_try_fmt_out(struct file *file, void *fh, + struct v4l2_format *f, + struct go2001_frame_info *finfo) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + struct go2001_fmt *fmt; + + fmt = go2001_find_fmt(ctx, pix_mp->pixelformat); + if (!fmt || fmt->type != FMT_TYPE_RAW) + return NULL; + + go2001_calc_finfo(ctx, fmt, finfo, pix_mp->width, pix_mp->height); + fill_v4l2_format_raw(f, fmt, finfo); + + return fmt; +} + +static int go2001_enc_try_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_frame_info finfo; + struct go2001_fmt *fmt = __go2001_enc_try_fmt_out(file, fh, f, &finfo); + + return fmt ? 0 : -EINVAL; +} + +static struct go2001_fmt *__go2001_enc_try_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_fmt *fmt; + + fmt = go2001_find_fmt(ctx, f->fmt.pix_mp.pixelformat); + if (!fmt || fmt->type != FMT_TYPE_CODED) + return NULL; + + fill_v4l2_format_coded(f, fmt, 0); + + /* TODO: This should allow setting scaling */ + return fmt; +} + +static int go2001_enc_try_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_fmt *fmt = __go2001_enc_try_fmt_cap(file, fh, f); + + return fmt ? 0 : -EINVAL; +} + +static int go2001_dec_s_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_fmt *fmt; + + go2001_trace(ctx->gdev); + + if (ctx->state != UNCOMMITTED) { + go2001_err(ctx->gdev, "Format cannot be set in this state\n"); + return -EBUSY; + } + + fmt = __go2001_dec_try_fmt_out(file, fh, f); + if (!fmt) + return -EINVAL; + + ctx->src_fmt = fmt; + ctx->bitstream_buf_size = f->fmt.pix_mp.plane_fmt[0].sizeimage; + + go2001_dbg(ctx->gdev, 1, "S_FMT on OUTPUT to %s\n", fmt->desc); + + return 0; +} + +static int go2001_dec_s_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_fmt *fmt; + + go2001_trace(ctx->gdev); + + if (ctx->state != UNCOMMITTED) { + go2001_err(ctx->gdev, "Format cannot be set in this state\n"); + return -EBUSY; + } + + fmt = __go2001_dec_try_fmt_cap(file, fh, f); + if (!fmt) + return -EINVAL; + + ctx->dst_fmt = fmt; + memset(&ctx->finfo, 0, sizeof(ctx->finfo)); + + go2001_dbg(ctx->gdev, 1, "S_FMT on CAPTURE to %s\n", fmt->desc); + + return 0; +} + +static int go2001_enc_s_fmt_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_frame_info finfo; + struct go2001_fmt *fmt; + + go2001_trace(ctx->gdev); + + if (ctx->state != UNCOMMITTED) { + go2001_err(ctx->gdev, "Format cannot be set in this state\n"); + return -EBUSY; + } + + fmt = __go2001_enc_try_fmt_out(file, fh, f, &finfo); + if (!fmt) + return -EINVAL; + + /* At 1280x720 and below go2001 can do three reference frames. */ + ctx->enc_params.multi_ref_frame_mode = + finfo.width * finfo.height <= 1280 * 720; + + ctx->src_fmt = fmt; + ctx->finfo = finfo; + + go2001_dbg(ctx->gdev, 1, "S_FMT on OUTPUT to %s, planes:%d\n", + fmt->desc, f->fmt.pix_mp.num_planes); + + return 0; +} + +static int go2001_enc_s_fmt_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_fmt *fmt; + + go2001_trace(ctx->gdev); + + if (ctx->state != UNCOMMITTED) { + go2001_err(ctx->gdev, "Format cannot be set in this state\n"); + return -EBUSY; + } + + fmt = __go2001_enc_try_fmt_cap(file, fh, f); + if (!fmt) + return -EINVAL; + + ctx->dst_fmt = fmt; + ctx->bitstream_buf_size = f->fmt.pix_mp.plane_fmt[0].sizeimage; + + go2001_dbg(ctx->gdev, 1, "S_FMT on CAPTURE to %s\n", fmt->desc); + + return 0; +} + +static int go2001_enc_g_crop(struct file *file, void *fh, struct v4l2_crop *c) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_frame_info *finfo = &ctx->finfo; + + go2001_trace(ctx->gdev); + + if (!V4L2_TYPE_IS_OUTPUT(c->type)) { + go2001_err(ctx->gdev, "G_CROP on CAPTURE for encoder unsupported\n"); + return -EINVAL; + } + + if (!go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "Frame info not available yet\n"); + return -EINVAL; + } + + c->c.left = 0; + c->c.top = 0; + c->c.width = finfo->width; + c->c.height = finfo->height; + go2001_dbg(ctx->gdev, 2, "Crop: (%d, %d) -> (%u, %u)\n", + c->c.left, c->c.top, c->c.width, c->c.height); + + return 0; +} + +static int go2001_enc_s_crop(struct file *file, void *fh, + const struct v4l2_crop *c) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_frame_info *finfo = &ctx->finfo; + int aligned_w, aligned_h; + struct go2001_fmt *fmt; + + go2001_trace(ctx->gdev); + + if (!V4L2_TYPE_IS_OUTPUT(c->type)) { + go2001_err(ctx->gdev, "Crop can only be set on the OUTPUT queue\n"); + return -EINVAL; + } + + if (!go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "Crop must be set after setting format\n"); + return -EINVAL; + } + + fmt = ctx->src_fmt; + + aligned_w = round_up(c->c.width, fmt->h_align); + aligned_h = round_up(c->c.height, fmt->v_align); + + if (finfo->width != c->c.width || finfo->height != c->c.height) { + go2001_dbg(ctx->gdev, 1, "Adjusted crop from (%d, %d) to (%d, %d)\n", + c->c.width, c->c.height, aligned_w, aligned_h); + } + + if (c->c.left != 0 || c->c.top != 0 || aligned_w > finfo->coded_width || + aligned_h > finfo->coded_height) { + go2001_err(ctx->gdev, "Invalid crop (%d, %d) -> (%u, %u) for coded size %ux%u\n", + c->c.left, c->c.top, aligned_w, aligned_h, + finfo->coded_width, finfo->coded_height); + return -EINVAL; + } + + finfo->width = aligned_w; + finfo->height = aligned_h; + go2001_dbg(ctx->gdev, 2, "Visible size set to %ux%u\n", + finfo->width, finfo->height); + return 0; +} + +static int go2001_dec_g_crop(struct file *file, void *fh, struct v4l2_crop *c) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct go2001_frame_info *finfo = &ctx->finfo; + + go2001_trace(ctx->gdev); + + if (V4L2_TYPE_IS_OUTPUT(c->type)) { + go2001_err(ctx->gdev, "G_CROP on OUTPUT for decoder unsupported\n"); + return -EINVAL; + } + + if (!go2001_has_frame_info(ctx)) { + go2001_dbg(ctx->gdev, 1, "Frame info not ready\n"); + return -EINVAL; + } + + c->c.left = 0; + c->c.top = 0; + c->c.width = finfo->width; + c->c.height = finfo->height; + go2001_dbg(ctx->gdev, 2, "Crop: (%d, %d) -> (%u, %u)\n", + c->c.left, c->c.top, c->c.width, c->c.height); + + return 0; +} + +static int go2001_enc_s_parm(struct file *file, void *fh, + struct v4l2_streamparm *p) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct v4l2_fract *timeperframe; + int fps; + + go2001_trace(ctx->gdev); + + if (p->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + return -EINVAL; + + timeperframe = &p->parm.output.timeperframe; + if (timeperframe->numerator == 0 || timeperframe->denominator == 0) { + go2001_err(ctx->gdev, "Invalid values for timeperframe\n"); + return -EINVAL; + } + + /* For now just normalize to 1/x sec/frame. */ + fps = timeperframe->denominator / timeperframe->numerator; + fps = max(1, fps); + ctx->pending_rt_params.enc_params.framerate_num = fps; + ctx->pending_rt_params.enc_params.framerate_denom = 1; + set_bit(GO2001_FRAMERATE_CHANGE, ctx->pending_rt_params.changed_mask); + go2001_dbg(ctx->gdev, 2, "FPS changed to %d\n", fps); + + return 0; +} + +static int go2001_enc_g_parm(struct file *file, void *fh, + struct v4l2_streamparm *p) +{ + struct go2001_ctx *ctx = fh_to_ctx(fh); + struct v4l2_fract *timeperframe; + + if (p->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + return -EINVAL; + + memset(&p->parm, 0, sizeof(p->parm)); + p->parm.output.capability = V4L2_CAP_TIMEPERFRAME; + timeperframe = &p->parm.output.timeperframe; + timeperframe->numerator = ctx->enc_params.framerate_denom; + timeperframe->denominator = ctx->enc_params.framerate_num; + + return 0; +} + +static int go2001_reqbufs_out(struct go2001_ctx *ctx, + struct v4l2_requestbuffers *rb) +{ + struct vb2_queue *vq = &ctx->src_vq; + int ret; + + go2001_dbg(ctx->gdev, 3, "count: %d\n", rb->count); + + if (rb->count == 0) + return vb2_reqbufs(vq, rb); + + if (!ctx->src_fmt || !ctx->dst_fmt) { + go2001_err(ctx->gdev, "Formats not set\n"); + return -EINVAL; + } + + if (ctx->codec_mode == CODEC_MODE_ENCODER && + !go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "No frame info available yet\n"); + return -EINVAL; + } + + if (ctx->state == UNCOMMITTED) { + ret = go2001_init_codec(ctx); + if (ret) { + go2001_err(ctx->gdev, "Failed initializing codec\n"); + return ret; + } + + go2001_set_ctx_state(ctx, COMMITTED); + } + + return vb2_reqbufs(vq, rb); +} + +static int go2001_move_from_resume_queue(struct go2001_ctx *ctx) +{ + struct list_head temp_list; + struct go2001_buffer *gbuf; + unsigned long flags; + int ret = 0; + + /* + * The buffer which triggered the resolution change, and any buffers + * which might have followed it and were sent by us to the hardware + * before we got the resolution change notification, have to be + * processed again, in the same order. + * Move them from the resume queue to the front of the source + * queue, and reinitialize for processing. + * + * First, make a copy of the resume list, so we can release + * the lock to be able to call go2001_prepare_gbuf() on each element. + */ + INIT_LIST_HEAD(&temp_list); + spin_lock_irqsave(&ctx->qlock, flags); + list_splice_init(&ctx->src_resume_q, &temp_list); + spin_unlock_irqrestore(&ctx->qlock, flags); + list_for_each_entry(gbuf, &temp_list, list) { + go2001_dbg(ctx->gdev, 3, "Requeuing buffer %p\n", gbuf); + + ret = go2001_prepare_gbuf(ctx, gbuf, true); + if (ret) + break; + } + + /* + * Finally, splice the lists so that the resume list is added in + * front of the source list. + */ + spin_lock_irqsave(&ctx->qlock, flags); + list_splice_init(&temp_list, &ctx->src_buf_q); + spin_unlock_irqrestore(&ctx->qlock, flags); + + return ret; +} + +static int go2001_reqbufs_cap(struct go2001_ctx *ctx, + struct v4l2_requestbuffers *rb) +{ + struct vb2_queue *vq = &ctx->dst_vq; + int ret = 0; + + go2001_dbg(ctx->gdev, 3, "count: %d\n", rb->count); + + if (rb->count == 0) + return vb2_reqbufs(vq, rb); + + if (!go2001_has_frame_info(ctx)) { + go2001_err(ctx->gdev, "No frame info available yet\n"); + return -EINVAL; + } + + if (ctx->codec_mode == CODEC_MODE_DECODER) { + switch (ctx->state) { + case RES_CHANGE: + case PAUSED: + ret = go2001_move_from_resume_queue(ctx); + if (ret) + go2001_set_ctx_state(ctx, ERROR); + else + go2001_set_ctx_state(ctx, PAUSED); + break; + + default: + go2001_err(ctx->gdev, "Invalid state\n"); + return -EINVAL; + } + } else { + if (ctx->state == UNCOMMITTED) { + ret = go2001_init_codec(ctx); + if (ret) { + go2001_err(ctx->gdev, "Failed initializing codec\n"); + return ret; + } + + go2001_set_ctx_state(ctx, COMMITTED); + } + } + + return vb2_reqbufs(vq, rb); +} + +static int go2001_reqbufs(struct file *file, void *fh, + struct v4l2_requestbuffers *rb) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + int ret; + + if (V4L2_TYPE_IS_OUTPUT(rb->type)) + ret = go2001_reqbufs_out(ctx, rb); + else + ret = go2001_reqbufs_cap(ctx, rb); + + if (ret) + go2001_err(ctx->gdev, "REQBUFS for type %d failed\n", rb->type); + else + go2001_dbg(ctx->gdev, 2, "Allocated %d buffers for type %d\n", + rb->count, rb->type); + + return ret; +} + +static int go2001_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + int ret; + int i; + + go2001_trace(ctx->gdev); + + if (V4L2_TYPE_IS_OUTPUT(b->type)) + return vb2_querybuf(&ctx->src_vq, b); + + /* Capture buffer */ + ret = vb2_querybuf(&ctx->dst_vq, b); + + if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) + for (i = 0; i < b->length; ++i) + b->m.planes[i].m.mem_offset += DST_QUEUE_OFF_BASE; + else + b->m.offset += DST_QUEUE_OFF_BASE; + + return ret; +} + +static int go2001_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *vq = go2001_get_vq(ctx, b->type); + + if (ctx->state == ERROR) { + go2001_dbg(ctx->gdev, 1, "Context %p in error state\n", ctx); + return -EIO; + } + + return vb2_qbuf(vq, b); +} + +static int go2001_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *vq = go2001_get_vq(ctx, b->type); + + return vb2_dqbuf(vq, b, file->f_flags & O_NONBLOCK); +} + +static int go2001_expbuf(struct file *file, void *fh, + struct v4l2_exportbuffer *e) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *vq = go2001_get_vq(ctx, e->type); + + return vb2_expbuf(vq, e); +} + +static int go2001_streamon(struct file *file, void *fh, enum v4l2_buf_type type) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *vq = go2001_get_vq(ctx, type); + + go2001_trace(ctx->gdev); + + return vb2_streamon(vq, type); +} + +static int go2001_streamoff(struct file *file, void *fh, + enum v4l2_buf_type type) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct vb2_queue *vq = go2001_get_vq(ctx, type); + + go2001_trace(ctx->gdev); + + return vb2_streamoff(vq, type); +} + +static int go2001_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_EOS: + return v4l2_event_subscribe(fh, sub, 2, NULL); + + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_event_subscribe(fh, sub, 2, NULL); + + default: + return -EINVAL; + } +} + +static int go2001_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct go2001_ctx *ctx = fh_to_ctx(file->private_data); + struct v4l2_frmsize_stepwise *s = &fsize->stepwise; + struct go2001_fmt *fmt; + + if (fsize->index != 0) + return -EINVAL; + + fmt = go2001_find_fmt(ctx, fsize->pixel_format); + if (!fmt) { + go2001_dbg(ctx->gdev, 1, "Unsupported pixelformat %d\n", + fsize->pixel_format); + return -EINVAL; + } + + if (fmt->type != FMT_TYPE_CODED) { + go2001_dbg(ctx->gdev, 1, "Only supported for coded formats\n"); + return -EINVAL; + } + + fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; + s->min_width = GO2001_VPX_MACROBLOCK_SIZE; + s->max_width = 1920; + s->step_width = 2; + s->min_height = GO2001_VPX_MACROBLOCK_SIZE; + s->max_height = 1088; + s->step_height = 2; + + return 0; +} + +static const struct v4l2_ioctl_ops go2001_ioctl_dec_ops = { + .vidioc_querycap = go2001_querycap, + + .vidioc_enum_fmt_vid_cap_mplane = go2001_enum_fmt_cap, + .vidioc_enum_fmt_vid_out_mplane = go2001_enum_fmt_out, + + .vidioc_g_fmt_vid_cap_mplane = go2001_dec_g_fmt_cap, + .vidioc_g_fmt_vid_out_mplane = go2001_dec_g_fmt_out, + + .vidioc_s_fmt_vid_cap_mplane = go2001_dec_s_fmt_cap, + .vidioc_s_fmt_vid_out_mplane = go2001_dec_s_fmt_out, + + .vidioc_try_fmt_vid_cap_mplane = go2001_dec_try_fmt_cap, + .vidioc_try_fmt_vid_out_mplane = go2001_dec_try_fmt_out, + + .vidioc_g_crop = go2001_dec_g_crop, + + .vidioc_reqbufs = go2001_reqbufs, + .vidioc_querybuf = go2001_querybuf, + .vidioc_qbuf = go2001_qbuf, + .vidioc_dqbuf = go2001_dqbuf, + .vidioc_streamon = go2001_streamon, + .vidioc_streamoff = go2001_streamoff, + .vidioc_expbuf = go2001_expbuf, + + .vidioc_enum_framesizes = go2001_enum_framesizes, + + .vidioc_subscribe_event = go2001_subscribe_event, +}; + +static const struct v4l2_ioctl_ops go2001_ioctl_enc_ops = { + .vidioc_querycap = go2001_querycap, + + .vidioc_enum_fmt_vid_cap_mplane = go2001_enum_fmt_cap, + .vidioc_enum_fmt_vid_out_mplane = go2001_enum_fmt_out, + + .vidioc_g_fmt_vid_cap_mplane = go2001_enc_g_fmt_cap, + .vidioc_g_fmt_vid_out_mplane = go2001_enc_g_fmt_out, + + .vidioc_s_fmt_vid_cap_mplane = go2001_enc_s_fmt_cap, + .vidioc_s_fmt_vid_out_mplane = go2001_enc_s_fmt_out, + + .vidioc_try_fmt_vid_cap_mplane = go2001_enc_try_fmt_cap, + .vidioc_try_fmt_vid_out_mplane = go2001_enc_try_fmt_out, + + .vidioc_g_crop = go2001_enc_g_crop, + .vidioc_s_crop = go2001_enc_s_crop, + + .vidioc_s_parm = go2001_enc_s_parm, + .vidioc_g_parm = go2001_enc_g_parm, + + .vidioc_reqbufs = go2001_reqbufs, + .vidioc_querybuf = go2001_querybuf, + .vidioc_qbuf = go2001_qbuf, + .vidioc_dqbuf = go2001_dqbuf, + .vidioc_streamon = go2001_streamon, + .vidioc_streamoff = go2001_streamoff, + .vidioc_expbuf = go2001_expbuf, + + .vidioc_enum_framesizes = go2001_enum_framesizes, +}; + +static int go2001_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + int ret; + struct go2001_dev *gdev; + struct video_device *vdev; + + dev_info(&pdev->dev, "Probing GO2001\n"); + + ret = pci_enable_device(pdev); + if (ret) { + go2001_err_nodev("Failed enabling device\n"); + return ret; + } + + ret = pci_request_regions(pdev, DRIVER_NAME); + if (ret) { + go2001_err_nodev("Failed requesting regions\n"); + goto disable_device; + } + + pci_set_master(pdev); + + ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); + if (!ret) + ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); + + if (ret) { + go2001_err_nodev("No suitable DMA available\n"); + goto release_regions; + } + + gdev = devm_kzalloc(&pdev->dev, sizeof(*gdev), GFP_KERNEL); + if (!gdev) { + ret = -ENOMEM; + goto release_regions; + } + + gdev->pdev = pdev; + mutex_init(&gdev->lock); + + spin_lock_init(&gdev->irqlock); + INIT_LIST_HEAD(&gdev->inst_list); + INIT_LIST_HEAD(&gdev->new_inst_list); + INIT_LIST_HEAD(&gdev->ctx_list); + init_waitqueue_head(&gdev->reply_wq); + init_completion(&gdev->fw_completion); + INIT_DELAYED_WORK(&gdev->watchdog_work, go2001_watchdog); + + gdev->msg_cache = kmem_cache_create("msg_cache", + sizeof(struct go2001_msg), 0, + SLAB_HWCACHE_ALIGN, NULL); + if (!gdev->msg_cache) { + go2001_err(gdev, "Failed creating msg cache\n"); + goto release_regions; + } + + ret = go2001_map_iomem(gdev); + if (ret) { + go2001_err(gdev, "Failed mapping IO memory\n"); + goto release_cache; + } + + ret = pci_enable_msi(pdev); + if (ret) { + go2001_err(gdev, "Failed enabling MSI\n"); + goto unmap; + } + + ret = request_irq(pdev->irq, go2001_irq, 0, DRIVER_NAME, gdev); + if (ret) { + go2001_err(gdev, "Failed requesting IRQ\n"); + goto disable_msi; + } + + ret = v4l2_device_register(&pdev->dev, &gdev->v4l2_dev); + if (ret) { + go2001_err(gdev, "Failed registering V4L2 device\n"); + goto free_irq; + } + + vdev = &gdev->dec_vdev; + strlcpy(vdev->name, VDEV_NAME_DEC, sizeof(vdev->name)); + vdev->v4l2_dev = &gdev->v4l2_dev; + vdev->vfl_dir = VFL_DIR_M2M; + vdev->fops = &go2001_fops; + vdev->ioctl_ops = &go2001_ioctl_dec_ops; + vdev->lock = &gdev->lock; + vdev->release = video_device_release_empty; + + video_set_drvdata(vdev, gdev); + + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + if (ret) + goto unregister_v4l2_device; + + vdev = &gdev->enc_vdev; + strlcpy(vdev->name, VDEV_NAME_ENC, sizeof(vdev->name)); + vdev->v4l2_dev = &gdev->v4l2_dev; + vdev->vfl_dir = VFL_DIR_M2M; + vdev->fops = &go2001_fops; + vdev->ioctl_ops = &go2001_ioctl_enc_ops; + vdev->lock = &gdev->lock; + vdev->release = video_device_release_empty; + + video_set_drvdata(vdev, gdev); + + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + if (ret) + goto unregister_video_device_dec; + + dev_info(&pdev->dev, "GO2001 successfully initialized.\n"); + + return 0; + +unregister_video_device_dec: + video_unregister_device(&gdev->dec_vdev); +unregister_v4l2_device: + v4l2_device_unregister(&gdev->v4l2_dev); +free_irq: + free_irq(pdev->irq, gdev); +disable_msi: + pci_disable_msi(pdev); +unmap: + go2001_unmap_iomem(gdev); +release_cache: + kmem_cache_destroy(gdev->msg_cache); +release_regions: + pci_release_regions(pdev); +disable_device: + pci_disable_device(pdev); + return ret; +} + +static void go2001_remove(struct pci_dev *pdev) +{ + struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); + struct go2001_dev *gdev = container_of(v4l2_dev, struct go2001_dev, + v4l2_dev); + + dev_info(&pdev->dev, "Removing GO2001\n"); + + video_unregister_device(&gdev->enc_vdev); + video_unregister_device(&gdev->dec_vdev); + + v4l2_device_unregister(&gdev->v4l2_dev); + + free_irq(pdev->irq, gdev); + + pci_disable_msi(pdev); + + go2001_unmap_iomem(gdev); + + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +#ifdef CONFIG_PM_SLEEP +static int go2001_suspend(struct device *dev) +{ + int ret; + struct pci_dev *pdev = to_pci_dev(dev); + struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); + unsigned long flags1, flags2; + struct go2001_ctx *ctx; + struct go2001_dev *gdev = container_of(v4l2_dev, struct go2001_dev, + v4l2_dev); + + go2001_trace(gdev); + + spin_lock_irqsave(&gdev->irqlock, flags1); + + list_for_each_entry(ctx, &gdev->ctx_list, ctx_entry) { + spin_lock_irqsave(&ctx->qlock, flags2); + go2001_set_ctx_state(ctx, ERROR); + spin_unlock_irqrestore(&ctx->qlock, flags2); + } + + spin_unlock_irqrestore(&gdev->irqlock, flags1); + + ret = wait_event_timeout(gdev->reply_wq, gdev->msgs_in_flight == 0, + msecs_to_jiffies(GO2001_WATCHDOG_TIMEOUT_MS)); + if (ret == 0) + go2001_err(gdev, "Timed out waiting for HW to become idle\n"); + + mutex_lock(&gdev->lock); + go2001_cancel_all_contexts(gdev); + mutex_unlock(&gdev->lock); + + return 0; +} + +static int go2001_resume(struct device *dev) +{ + int ret; + struct pci_dev *pdev = to_pci_dev(dev); + struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); + struct go2001_dev *gdev = container_of(v4l2_dev, struct go2001_dev, + v4l2_dev); + + go2001_trace(gdev); + + mutex_lock(&gdev->lock); + + ret = go2001_init(gdev); + if (ret) { + gdev->initialized = false; + go2001_err(gdev, "Failed resetting firmware\n"); + } + + mutex_unlock(&gdev->lock); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(go2001_pm_ops, go2001_suspend, go2001_resume); + +static const struct pci_device_id go2001_pci_tbl[] = { + { PCI_DEVICE(0x1ae0, 0x001a) }, + {}, +}; + +static struct pci_driver go2001_driver = { + .name = KBUILD_MODNAME, + .probe = go2001_probe, + .remove = go2001_remove, + .id_table = go2001_pci_tbl, + .driver.pm = &go2001_pm_ops, +}; + +module_pci_driver(go2001_driver); + +MODULE_DESCRIPTION("GO2001 PCI-E codec driver"); +MODULE_AUTHOR("Pawel Osciak <posciak@xxxxxxxxxxxx>"); +MODULE_LICENSE("GPL v2"); +MODULE_DEVICE_TABLE(pci, go2001_pci_tbl); diff --git a/drivers/media/pci/go2001/go2001_hw.c b/drivers/media/pci/go2001/go2001_hw.c new file mode 100644 index 0000000..1a79635 --- /dev/null +++ b/drivers/media/pci/go2001/go2001_hw.c @@ -0,0 +1,1365 @@ +/* + * go2001 - GO2001 codec driver. + * + * Author : Pawel Osciak <posciak@xxxxxxxxxxxx> + * + * Copyright (C) 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#include <linux/delay.h> +#include <linux/firmware.h> + +#include "go2001.h" +#include "go2001_hw.h" +#include "go2001_proto.h" + +static int go2001_load_fw_image(struct go2001_dev *gdev, + const struct firmware *fw, + void __iomem *ctrl_addr, size_t ctrl_size, + void __iomem *load_addr, size_t max_size, + u32 entry_addr) +{ + struct go2001_boot_hdr hdr; + u8 *chksum_ptr; + size_t chksum_size; + unsigned long flags; + u32 reg; + int i; + + if (fw->size > GO2001_FW_MAX_SIZE || fw->size > max_size) { + go2001_err(gdev, "Firmware image too large (%zu)\n", fw->size); + return -EINVAL; + } + + if (ctrl_size < GO2001_FW_HDR_OFF + sizeof(hdr) || + ctrl_size < GO2001_FW_STOP + sizeof(u32)) { + go2001_err(gdev, "PCI BAR sizes invalid\n"); + return -ENODEV; + } + + hdr.signature = GO2001_FW_SIGNATURE; + hdr.entry_addr = entry_addr; + hdr.size = 16; + hdr.checksum = 0; + + /* + * Calculate a checksum of the header (excluding checksum field itself). + */ + chksum_ptr = (u8 *)&hdr; + chksum_size = offsetof(struct go2001_boot_hdr, checksum); + for (i = 0; i < chksum_size; ++i) + hdr.checksum += chksum_ptr[i]; + hdr.checksum &= 0xff; + + /* Stop the firmware via a soft interrupt. */ + writeb('p', ctrl_addr + GO2001_FW_HDR_OFF); + reg = readl(ctrl_addr + GO2001_FW_STOP); + reg |= GO2001_FW_STOP_BIT; + writel(reg, ctrl_addr + GO2001_FW_STOP); + + /* + * The next interrupt after resuming will be the "firmware loaded" + * interrupt, clear the flag so we handle this on next IRQ. + */ + spin_lock_irqsave(&gdev->irqlock, flags); + gdev->fw_loaded = false; + spin_unlock_irqrestore(&gdev->irqlock, flags); + + /* Copy firmware and the header */ + memcpy_toio(load_addr, fw->data, fw->size); + writel(hdr.entry_addr, ctrl_addr + GO2001_FW_HDR_OFF + + offsetof(struct go2001_boot_hdr, entry_addr)); + writel(hdr.size, ctrl_addr + GO2001_FW_HDR_OFF + + offsetof(struct go2001_boot_hdr, size)); + writel(hdr.checksum, ctrl_addr + GO2001_FW_HDR_OFF + + offsetof(struct go2001_boot_hdr, checksum)); + /* + * Write signature last, as this is what the device is spinning on + * while we are loading the firmware + */ + writel(hdr.signature, ctrl_addr + GO2001_FW_HDR_OFF + + offsetof(struct go2001_boot_hdr, signature)); + + /* Clear the interrupt. */ + reg &= ~GO2001_FW_STOP_BIT; + writel(reg, ctrl_addr + GO2001_FW_STOP); + + return 0; +} + +static int go2001_load_firmware(struct go2001_dev *gdev) +{ + resource_size_t ctrl_start, fw_start; + const struct firmware *boot_fw = NULL; + const struct firmware *fw = NULL; + void __iomem *fw_iomem; + void __iomem *ctrl_iomem; + size_t fw_iomem_size, ctrl_iomem_size; + int time_spent = 0; + int ret; + + init_completion(&gdev->fw_completion); + + ctrl_start = pci_resource_start(gdev->pdev, 2); + ctrl_iomem_size = pci_resource_len(gdev->pdev, 2); + if (!ctrl_start || !ctrl_iomem_size) { + go2001_err(gdev, "PCI BAR 2 invalid\n"); + return -ENODEV; + } + + fw_start = pci_resource_start(gdev->pdev, 0); + fw_iomem_size = pci_resource_len(gdev->pdev, 0); + if (!fw_start || !fw_iomem_size) { + go2001_err(gdev, "PCI BAR 0 invalid\n"); + return -ENODEV; + } + + if (ctrl_iomem_size < GO2001_BOOT_FW_OFF || + fw_iomem_size < GO2001_FW_OFF) { + go2001_err(gdev, "Invalid PCI BAR sizes\n"); + return -EINVAL; + } + + ctrl_iomem = ioremap_nocache(ctrl_start, ctrl_iomem_size); + if (!ctrl_iomem) { + go2001_err(gdev, "Failed mapping PCI BAR 2\n"); + return -ENOMEM; + } + + fw_iomem = ioremap_nocache(fw_start, fw_iomem_size); + if (!fw_iomem) { + go2001_err(gdev, "Failed mapping PCI BAR 0\n"); + ret = -ENOMEM; + goto out_unmap_ctrl_iomem; + } + + ret = request_firmware(&boot_fw, GO2001_BOOT_FW_NAME, &gdev->pdev->dev); + if (ret) { + go2001_err(gdev, "Unable to open firmware %s\n", + GO2001_BOOT_FW_NAME); + goto out_unmap_fw_iomem; + } + + ret = request_firmware(&fw, GO2001_FW_NAME, &gdev->pdev->dev); + if (ret) { + go2001_err(gdev, "Unable to open firmware %s\n", + GO2001_FW_NAME); + goto out_release_boot_fw; + } + + ret = go2001_load_fw_image(gdev, boot_fw, + ctrl_iomem, ctrl_iomem_size, + ctrl_iomem + GO2001_BOOT_FW_OFF, + ctrl_iomem_size - GO2001_BOOT_FW_OFF, + GO2001_BOOT_FW_ENTRY_BASE + GO2001_BOOT_FW_OFF); + if (ret) { + go2001_err(gdev, "Failed loading firmware %s\n", + GO2001_BOOT_FW_NAME); + goto out_release_fw; + } + + /* + * Boot firmware will change GO2001_FW_SIGNATURE to + * GO2001_FW_DONE_SIGNATURE when done. + */ + while (readl(ctrl_iomem + GO2001_FW_HDR_OFF) != + GO2001_FW_DONE_SIGNATURE && + time_spent < GO2001_REPLY_TIMEOUT_MS) { + mdelay(100); + time_spent += 100; + } + + if (time_spent >= GO2001_REPLY_TIMEOUT_MS) { + go2001_err(gdev, "Timed out waiting for firmware to start\n"); + ret = -ENODEV; + goto out_release_fw; + } + + go2001_dbg(gdev, 1, "Firmware %s loaded\n", GO2001_BOOT_FW_NAME); + + ret = go2001_load_fw_image(gdev, fw, ctrl_iomem, ctrl_iomem_size, + fw_iomem + GO2001_FW_OFF, + fw_iomem_size - GO2001_FW_OFF, + GO2001_FW_ENTRY_BASE + GO2001_FW_OFF); + if (ret) { + go2001_err(gdev, "Failed loading firmware %s\n", + GO2001_FW_NAME); + goto out_release_fw; + } + + if (wait_for_completion_timeout(&gdev->fw_completion, + msecs_to_jiffies(GO2001_REPLY_TIMEOUT_MS)) == 0) { + go2001_err(gdev, "Timed out waiting for firmware\n"); + ret = -ENODEV; + goto out_release_fw; + } + + go2001_dbg(gdev, 1, "Firmware %s loaded\n", GO2001_FW_NAME); + +out_release_fw: + release_firmware(fw); +out_release_boot_fw: + release_firmware(boot_fw); +out_unmap_fw_iomem: + iounmap(fw_iomem); +out_unmap_ctrl_iomem: + iounmap(ctrl_iomem); + + return ret; +} + +int go2001_map_iomem(struct go2001_dev *gdev) +{ + resource_size_t start = pci_resource_start(gdev->pdev, 0); + resource_size_t len = pci_resource_len(gdev->pdev, 0); + + if (!start || !len) + return -ENODEV; + + if (len < GO2001_MSG_RING_MEM_OFFSET + GO2001_MSG_RING_MEM_SIZE) + return -ENODEV; + + gdev->iomem_size = GO2001_MSG_RING_MEM_SIZE; + gdev->iomem = ioremap(start + GO2001_MSG_RING_MEM_OFFSET, + gdev->iomem_size); + if (!gdev->iomem) + return -ENOMEM; + + return 0; +} + +void go2001_unmap_iomem(struct go2001_dev *gdev) +{ + iounmap(gdev->iomem); +} + +void go2001_init_hw_inst(struct go2001_hw_inst *inst, u32 inst_id) +{ + inst->session_id = inst_id; + inst->sequence_id = 0; + inst->last_reply_seq_id = 0; + INIT_LIST_HEAD(&inst->pending_list); + INIT_LIST_HEAD(&inst->inst_entry); +} + +static void go2001_release_hw_inst(struct go2001_dev *gdev, + struct go2001_hw_inst *inst) +{ + unsigned long flags; + + spin_lock_irqsave(&gdev->irqlock, flags); + go2001_cancel_hw_inst_locked(gdev, inst); + spin_unlock_irqrestore(&gdev->irqlock, flags); +} + +static int go2001_init_ring(struct go2001_dev *gdev, + struct go2001_msg_ring *ring, + off_t ring_desc_offset) +{ + struct go2001_msg_ring_desc *desc = &ring->desc; + + spin_lock_init(&ring->lock); + + ring->desc_iomem = gdev->iomem + ring_desc_offset; + memcpy_fromio(desc, ring->desc_iomem, sizeof(*desc)); + go2001_dbg(gdev, 1, "Ring %p: [0x%x-0x%x], msg size: %d, capacity: %d, wr_off: 0x%x, rd_off: 0x%x\n", + ring->desc_iomem, desc->start_off, desc->end_off, + desc->msg_size, + (desc->end_off - desc->start_off) / desc->msg_size, + desc->wr_off, desc->rd_off); + + if (WARN_ON(desc->msg_size == 0 || desc->end_off <= desc->start_off || + desc->end_off > gdev->iomem_size || + desc->wr_off != desc->rd_off)) { + go2001_err(gdev, "Invalid ring descriptor\n"); + return -EIO; + } + + if (WARN_ON(desc->msg_size > sizeof(struct go2001_msg))) { + go2001_err(gdev, "Ring message size over limit\n"); + return -EIO; + } + + return 0; +} + +static int go2001_init_messaging(struct go2001_dev *gdev) +{ + int ret = 0; + + go2001_dbg(gdev, 1, "Initializing TX ring\n"); + + ret = go2001_init_ring(gdev, &gdev->tx_ring, + GO2001_TX_RING_DESC_OFFSET); + if (ret) + return ret; + + go2001_dbg(gdev, 1, "Initializing RX ring\n"); + + ret = go2001_init_ring(gdev, &gdev->rx_ring, + GO2001_RX_RING_DESC_OFFSET); + if (ret) + return ret; + + return 0; +} + +static void go2001_update_ring_locked(struct go2001_msg_ring *r) +{ + r->desc.wr_off = ioread32(r->desc_iomem + + offsetof(struct go2001_msg_ring_desc, wr_off)); + r->desc.rd_off = ioread32(r->desc_iomem + + offsetof(struct go2001_msg_ring_desc, rd_off)); +} + +static inline bool go2001_ring_is_full_locked(struct go2001_msg_ring *r) +{ + u32 next_off; + + go2001_update_ring_locked(r); + next_off = r->desc.wr_off + r->desc.msg_size; + return (next_off == r->desc.rd_off || + (r->desc.rd_off == r->desc.start_off && + next_off >= r->desc.end_off)); +} + +static inline bool go2001_ring_is_empty_locked(struct go2001_msg_ring *r) +{ + go2001_update_ring_locked(r); + return r->desc.rd_off == r->desc.wr_off; +} + +static struct go2001_msg *prepare_msg(struct go2001_dev *gdev, + enum go2001_msg_type type, + size_t param_size) +{ + struct go2001_msg *msg; + struct go2001_msg_hdr *hdr; + + msg = kmem_cache_zalloc(gdev->msg_cache, GFP_KERNEL); + if (!msg) { + go2001_err(gdev, "Failed allocating msg\n"); + return NULL; + } + + INIT_LIST_HEAD(&msg->list_entry); + hdr = msg_to_hdr(msg); + hdr->type = type; + hdr->size = go2001_calc_payload_size(param_size); + + return msg; +} + +static void free_msg(struct go2001_dev *gdev, struct go2001_msg *msg) +{ + WARN_ON(!list_empty(&msg->list_entry)); + kmem_cache_free(gdev->msg_cache, msg); +} + +static struct go2001_hw_inst *get_next_ready_hw_inst(struct go2001_dev *gdev) +{ + struct go2001_hw_inst *hw_inst; + + go2001_trace(gdev); + + if (list_empty(&gdev->inst_list)) + return NULL; + + if (!gdev->curr_hw_inst) { + gdev->curr_hw_inst = list_first_entry(&gdev->inst_list, + struct go2001_hw_inst, inst_entry); + } + + hw_inst = gdev->curr_hw_inst; + list_for_each_entry_continue(hw_inst, &gdev->inst_list, inst_entry) { + if (!list_empty(&hw_inst->pending_list)) + return hw_inst; + } + + list_for_each_entry(hw_inst, &gdev->inst_list, inst_entry) { + if (!list_empty(&hw_inst->pending_list)) + return hw_inst; + + if (hw_inst == gdev->curr_hw_inst) + break; + } + + return NULL; +} + +static struct go2001_msg *go2001_get_pending_msg_locked(struct go2001_dev *gdev) +{ + struct go2001_hw_inst *hw_inst; + struct go2001_msg_hdr *hdr; + struct go2001_msg *msg; + + assert_spin_locked(&gdev->irqlock); + + hw_inst = get_next_ready_hw_inst(gdev); + if (!hw_inst) { + go2001_dbg(gdev, 5, "No pending messages\n"); + return NULL; + } + + gdev->curr_hw_inst = hw_inst; + msg = list_first_entry(&hw_inst->pending_list, struct go2001_msg, + list_entry); + hdr = msg_to_hdr(msg); + go2001_dbg(gdev, 5, "Found pending message for instance %d, seqid %d\n", + hw_inst->session_id, hdr->sequence_id); + + list_del_init(&msg->list_entry); + + return msg; +} + +static void go2001_drop_pending_for_hw_inst_locked(struct go2001_dev *gdev, + struct go2001_hw_inst *hw_inst) +{ + struct go2001_msg *msg, *tmp_msg; + + assert_spin_locked(&gdev->irqlock); + + list_for_each_entry_safe(msg, tmp_msg, &hw_inst->pending_list, + list_entry) { + list_del_init(&msg->list_entry); + free_msg(gdev, msg); + } + + INIT_LIST_HEAD(&hw_inst->pending_list); +} + +void go2001_cancel_hw_inst_locked(struct go2001_dev *gdev, + struct go2001_hw_inst *hw_inst) +{ + assert_spin_locked(&gdev->irqlock); + + WARN_ON(!list_empty(&hw_inst->inst_entry) && + !list_empty(&hw_inst->pending_list)); + + go2001_drop_pending_for_hw_inst_locked(gdev, hw_inst); + list_del_init(&hw_inst->inst_entry); + if (gdev->curr_hw_inst == hw_inst) + gdev->curr_hw_inst = NULL; +} + +void go2001_cancel_all_hw_inst_locked(struct go2001_dev *gdev) +{ + struct go2001_hw_inst *hw_inst; + + assert_spin_locked(&gdev->irqlock); + + list_for_each_entry(hw_inst, &gdev->inst_list, inst_entry) + go2001_drop_pending_for_hw_inst_locked(gdev, hw_inst); + INIT_LIST_HEAD(&gdev->inst_list); + + list_for_each_entry(hw_inst, &gdev->new_inst_list, inst_entry) + go2001_drop_pending_for_hw_inst_locked(gdev, hw_inst); + INIT_LIST_HEAD(&gdev->new_inst_list); + + gdev->curr_hw_inst = NULL; +} + +static void go2001_print_msg(struct go2001_dev *gdev, struct go2001_msg *msg, + const char *prefix) +{ + struct go2001_msg_hdr *hdr = msg_to_hdr(msg); + + go2001_dbg(gdev, 4, "%s: MSG: [%d/%d], type=0x%x, size=%d, status=0x%x\n", + prefix, hdr->session_id, hdr->sequence_id, hdr->type, + hdr->size, hdr->status); + + if (go2001_debug_level >= 5) + print_hex_dump(KERN_DEBUG, prefix, DUMP_PREFIX_NONE, 16, 1, + msg_to_param(msg), + hdr->size - sizeof(struct go2001_msg_hdr), + false); +} + +static void go2001_print_mmap_list(struct go2001_dev *gdev, + struct go2001_dma_desc *dma_desc) +{ + struct go2001_mmap_list_entry *mmap_list = dma_desc->mmap_list; + int i; + + for (i = 0; i < dma_desc->num_entries; ++i) + go2001_dbg(gdev, 4, "entry %02d: addr: 0x%08llx, size: %d\n", + i, mmap_list[i].dma_addr, mmap_list[i].size); +} + +static void go2001_send_pending_locked(struct go2001_dev *gdev) +{ + struct go2001_msg_ring *r = &gdev->tx_ring; + struct go2001_msg *msg; + struct go2001_msg_hdr *hdr; + unsigned long flags; + struct go2001_msg_ring_desc *desc = &r->desc; + + spin_lock_irqsave(&r->lock, flags); + + while (1) { + if (go2001_ring_is_full_locked(r)) { + go2001_dbg(gdev, 5, "TX ring full, not sending.\n"); + break; + } + + msg = go2001_get_pending_msg_locked(gdev); + if (!msg) + break; + + hdr = msg_to_hdr(msg); + + memcpy_toio(r->desc_iomem + desc->wr_off, hdr, hdr->size); + go2001_print_msg(gdev, msg, "TX: "); + desc->wr_off += desc->msg_size; + if (desc->wr_off >= desc->end_off) + desc->wr_off = desc->start_off; + + iowrite32(desc->wr_off, r->desc_iomem + + offsetof(struct go2001_msg_ring_desc, wr_off)); + + if (gdev->msgs_in_flight == 0) + schedule_delayed_work(&gdev->watchdog_work, + msecs_to_jiffies(GO2001_WATCHDOG_TIMEOUT_MS)); + + ++gdev->msgs_in_flight; + + go2001_dbg(gdev, 5, "Messages in flight: %d\n", + gdev->msgs_in_flight); + + free_msg(gdev, msg); + } + + spin_unlock_irqrestore(&r->lock, flags); +} + +void go2001_send_pending(struct go2001_dev *gdev) +{ + unsigned long flags; + + spin_lock_irqsave(&gdev->irqlock, flags); + go2001_send_pending_locked(gdev); + spin_unlock_irqrestore(&gdev->irqlock, flags); +} + +/* + * NOTE: msg must not be used by the caller after this functions returns; + * either we'll free it after sending it to HW, or it will be cleaned up by the + * watchdog on timeout (if still on the pending_list at that time). + */ +static u32 go2001_queue_msg_locked(struct go2001_dev *gdev, + struct go2001_hw_inst *hw_inst, + struct go2001_msg *msg) +{ + struct go2001_msg_hdr *hdr = msg_to_hdr(msg); + u32 seqid; + + assert_spin_locked(&gdev->irqlock); + + hdr->session_id = hw_inst->session_id; + seqid = ++hw_inst->sequence_id; + hdr->sequence_id = seqid; + list_add_tail(&msg->list_entry, &hw_inst->pending_list); + + return seqid; +} + +static u32 go2001_queue_msg(struct go2001_ctx *ctx, struct go2001_msg *msg) +{ + struct go2001_dev *gdev = ctx->gdev; + unsigned long flags; + u32 type = msg_to_hdr(msg)->type; + u32 seqid; + + spin_lock_irqsave(&gdev->irqlock, flags); + seqid = go2001_queue_msg_locked(gdev, &ctx->hw_inst, msg); + spin_unlock_irqrestore(&gdev->irqlock, flags); + go2001_dbg(gdev, 5, "Queued message type 0x%x for inst %d, seqid: %d\n", + type, ctx->hw_inst.session_id, seqid); + + /* The message is freed after being sent to hardware or on error. */ + go2001_send_pending(gdev); + + return seqid; +} + +static struct go2001_hw_inst *find_hw_inst_by_id_locked(struct go2001_dev *gdev, + u32 session_id) +{ + struct go2001_hw_inst *hw_inst; + + list_for_each_entry(hw_inst, &gdev->inst_list, inst_entry) + if (hw_inst->session_id == session_id) + return hw_inst; + + return NULL; +} + +static bool go2001_sequence_passed(struct go2001_dev *gdev, + u32 session_id, u32 seq_id) +{ + struct go2001_hw_inst *hw_inst; + unsigned long flags; + bool ret = true; + + spin_lock_irqsave(&gdev->irqlock, flags); + + hw_inst = find_hw_inst_by_id_locked(gdev, session_id); + if (hw_inst) + ret = (hw_inst->last_reply_seq_id >= seq_id); + + spin_unlock_irqrestore(&gdev->irqlock, flags); + + return ret; +} + +static int go2001_wait_for_reply(struct go2001_dev *gdev, u32 session_id, + u32 sequence_id) +{ + int ret; + + ret = wait_event_timeout(gdev->reply_wq, + go2001_sequence_passed(gdev, session_id, sequence_id), + msecs_to_jiffies(GO2001_REPLY_TIMEOUT_MS)); + if (ret == 0) { + go2001_err(gdev, "Timeout waiting for reply to %d/%d\n", + session_id, sequence_id); + return -ETIMEDOUT; + } + + go2001_dbg(gdev, 5, "Finished waiting for %d/%d\n", + session_id, sequence_id); + + return 0; +} + +static inline bool go2001_ctx_idle(struct go2001_ctx *ctx) +{ + unsigned long flags1, flags2; + bool idle; + + spin_lock_irqsave(&ctx->gdev->irqlock, flags1); + spin_lock_irqsave(&ctx->qlock, flags2); + idle = list_empty(&ctx->hw_inst.inst_entry) || + (list_empty(&ctx->hw_inst.pending_list) && !ctx->job.src_buf); + spin_unlock_irqrestore(&ctx->qlock, flags2); + spin_unlock_irqrestore(&ctx->gdev->irqlock, flags1); + + return idle; +} + +void go2001_wait_for_ctx_done(struct go2001_ctx *ctx) +{ + /* No timeout, the watchdog will wake us up if needed. */ + wait_event(ctx->gdev->reply_wq, go2001_ctx_idle(ctx)); + go2001_wait_for_reply(ctx->gdev, ctx->hw_inst.session_id, + ctx->hw_inst.sequence_id); +} + +static int go2001_queue_msg_and_wait(struct go2001_ctx *ctx, + struct go2001_msg *msg) +{ + u32 session_id = ctx->hw_inst.session_id; + u32 seqid; + + /* msg becomes invalid after the call to go2001_queue_msg. */ + seqid = go2001_queue_msg(ctx, msg); + + return go2001_wait_for_reply(ctx->gdev, session_id, seqid); +} + +static int go2001_queue_ctrl_msg_and_wait(struct go2001_dev *gdev, + struct go2001_msg *msg) +{ + unsigned long flags; + u32 seqid; + + spin_lock_irqsave(&gdev->irqlock, flags); + seqid = go2001_queue_msg_locked(gdev, &gdev->ctrl_inst, msg); + spin_unlock_irqrestore(&gdev->irqlock, flags); + + go2001_dbg(gdev, 5, "Queued control msg seqid: %d\n", seqid); + + go2001_send_pending(gdev); + + return go2001_wait_for_reply(gdev, 0, seqid); +} + +static int go2001_queue_init_msg_and_wait(struct go2001_ctx *ctx, + struct go2001_msg *msg) +{ + struct go2001_dev *gdev = ctx->gdev; + unsigned long flags; + u32 seqid; + + spin_lock_irqsave(&gdev->irqlock, flags); + + seqid = go2001_queue_msg_locked(gdev, &gdev->ctrl_inst, msg); + if (ctx && !WARN_ON(!list_empty(&ctx->hw_inst.inst_entry))) { + go2001_dbg(gdev, 5, "New inst seq %d\n", seqid); + list_add_tail(&ctx->hw_inst.inst_entry, &gdev->new_inst_list); + /* Will use sequence_id to check if we got the + * reply for the correct new ctx in IRQ. + */ + ctx->hw_inst.sequence_id = seqid; + } + + spin_unlock_irqrestore(&gdev->irqlock, flags); + + go2001_send_pending(gdev); + + return go2001_wait_for_reply(gdev, 0, seqid); +} + +int go2001_get_reply(struct go2001_dev *gdev, struct go2001_msg *msg) +{ + struct go2001_msg_ring *r = &gdev->rx_ring; + struct go2001_msg_hdr *hdr = msg_to_hdr(msg); + struct go2001_msg_ring_desc *desc = &r->desc; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&r->lock, flags); + + if (go2001_ring_is_empty_locked(r)) { + go2001_dbg(gdev, 5, "Ring empty\n"); + ret = -EAGAIN; + goto out; + } + + memcpy_fromio(hdr, r->desc_iomem + desc->rd_off, desc->msg_size); + go2001_print_msg(gdev, msg, "RX: "); + + desc->rd_off += desc->msg_size; + if (desc->rd_off >= desc->end_off) + desc->rd_off = desc->start_off; + + iowrite32(desc->rd_off, r->desc_iomem + + offsetof(struct go2001_msg_ring_desc, rd_off)); + +out: + spin_unlock_irqrestore(&r->lock, flags); + return ret; +} + +static int go2001_init_decoder(struct go2001_ctx *ctx) +{ + struct go2001_dev *gdev = ctx->gdev; + struct go2001_init_decoder_param *param; + struct go2001_msg *msg; + unsigned long flags; + int ret; + + if (!ctx->src_fmt) { + go2001_err(gdev, "Input format not set\n"); + return -EINVAL; + } + + go2001_dbg(gdev, 2, "Initializing decoder for format %s\n", + ctx->src_fmt->desc); + + msg = prepare_msg(gdev, GO2001_VM_INIT_DECODER, sizeof(*param)); + if (!msg) + return -ENOMEM; + + param = msg_to_param(msg); + param->coded_fmt = ctx->src_fmt->hw_format; + param->concealment = 0; + + ret = go2001_queue_init_msg_and_wait(ctx, msg); + spin_lock_irqsave(&ctx->qlock, flags); + if (ret || ctx->state == ERROR) { + go2001_err(gdev, "Failed initializing decoder\n"); + ret = ret ? ret : -EIO; + } + spin_unlock_irqrestore(&ctx->qlock, flags); + + return ret; +} + +static int go2001_s_ctrl(struct go2001_ctx *ctx, enum go2001_hw_ctrl_type type, + union go2001_hw_ctrl *ctrl) +{ + struct go2001_set_ctrl_param *param; + struct go2001_msg *msg; + + msg = prepare_msg(ctx->gdev, GO2001_VM_SET_CTRL, sizeof(*param)); + if (!msg) + return -ENOMEM; + + param = msg_to_param(msg); + param->type = type; + + memcpy(¶m->ctrl, ctrl, sizeof(*ctrl)); + + return go2001_queue_msg_and_wait(ctx, msg); +} + +static int go2001_set_def_encoder_ctrls(struct go2001_ctx *ctx) +{ + union go2001_hw_ctrl hw_ctrl; + struct go2001_enc_coding_ctrl *ctrl = &hw_ctrl.coding_ctrl; + + memset(&hw_ctrl, 0, sizeof(hw_ctrl)); + ctrl->interp_filter_type = GO2001_CODING_CTRL_INTERP_FILTER_BICUBIC; + ctrl->deblock_filter_type = GO2001_CODING_CTRL_DEBLOCK_FILTER_NORMAL; + ctrl->deblock_filter_level = 64; + ctrl->deblock_filter_sharpness = 8; + ctrl->num_dct_parts = 1; + ctrl->error_resilient = 1; + ctrl->split_mv = GO2001_CODING_CTRL_MV_ADAPTIVE; + ctrl->quarter_pixel_mv = GO2001_CODING_CTRL_MV_ADAPTIVE; + ctrl->deadzone_enabled = 1; + ctrl->max_num_passes = 1; + ctrl->quality_metric = GO2001_CODING_CTRL_QM_SSIM; + + return go2001_s_ctrl(ctx, GO2001_HW_CTRL_TYPE_CODING, &hw_ctrl); +} + +static int go2001_init_encoder(struct go2001_ctx *ctx) +{ + struct go2001_dev *gdev = ctx->gdev; + struct go2001_init_encoder_param *param; + struct go2001_frame_info *finfo; + struct go2001_msg *msg; + int ret; + + if (WARN_ON(!ctx->src_fmt || !ctx->dst_fmt || + !go2001_has_frame_info(ctx))) { + go2001_dbg(ctx->gdev, 2, "Formats not set\n"); + return -EINVAL; + } + + go2001_dbg(gdev, 2, "Initializing encoder for formats %s->%s at %dx%d\n", + ctx->src_fmt->desc, ctx->dst_fmt->desc, ctx->finfo.width, + ctx->finfo.height); + + msg = prepare_msg(gdev, GO2001_VM_INIT_ENCODER, sizeof(*param)); + if (!msg) + return -ENOMEM; + + param = msg_to_param(msg); + finfo = &ctx->finfo; + + param->session_id = 0; + param->num_ref_frames = ctx->enc_params.multi_ref_frame_mode ? 1 : 3; + param->width = finfo->width; + param->height = finfo->height; + param->orig_width = finfo->width; + param->orig_height = finfo->height; + param->framerate_num = ctx->enc_params.framerate_num; + param->framerate_denom = ctx->enc_params.framerate_denom; + param->raw_fmt = ctx->src_fmt->hw_format; + + ret = go2001_queue_init_msg_and_wait(ctx, msg); + if (ret || ctx->state == ERROR) { + go2001_err(gdev, "Failed initializing encoder\n"); + return ret ? ret : -EIO; + } + + return go2001_set_def_encoder_ctrls(ctx); +} + +void go2001_release_codec(struct go2001_ctx *ctx) +{ + struct go2001_dev *gdev = ctx->gdev; + struct go2001_msg *msg; + + go2001_dbg(gdev, 2, "Releasing session id %d, codec state %d\n", + ctx->hw_inst.session_id, ctx->state); + + if (ctx->hw_inst.session_id != 0) { + msg = prepare_msg(gdev, GO2001_VM_RELEASE, 0); + if (msg) + go2001_queue_msg_and_wait(ctx, msg); + } + + /* Regardless of whether we sent and/or got a reply or not, clean up. */ + go2001_release_hw_inst(gdev, &ctx->hw_inst); +} + +int go2001_map_buffer(struct go2001_ctx *ctx, struct go2001_buffer *buf) +{ + struct go2001_dev *gdev = ctx->gdev; + struct device *dev = &gdev->pdev->dev; + struct go2001_set_mmap_param *param; + struct vb2_buffer *vb = &buf->vb; + struct go2001_dma_desc *dma_desc; + struct go2001_msg *msg; + struct go2001_mmap_list_desc *list_desc; + unsigned int i; + + if (buf->mapped) { + go2001_err(gdev, "Buffer already mapped\n"); + return -EINVAL; + } + + if (vb->num_planes > GO2001_MMAP_MAX_ENTRIES) { + go2001_err(gdev, "Too many planes to map\n"); + return -EIO; + } + + msg = prepare_msg(gdev, GO2001_VM_SET_MMAP, sizeof(*param)); + if (!msg) + return -ENOMEM; + param = msg_to_param(msg); + param->dir = V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) ? + GO2001_VSM_DIR_IN : GO2001_VSM_DIR_OUT; + param->count = vb->num_planes; + for (i = 0; i < vb->num_planes; ++i) { + dma_desc = &buf->dma_desc[i]; + list_desc = ¶m->mmap_list_desc[i]; + + dma_desc->map_addr = dma_desc->mmap_list[0].dma_addr; + + list_desc->first_entry_dma_addr = dma_desc->map_addr; + list_desc->entry_count = dma_desc->num_entries; + list_desc->mmap_list_addr = dma_desc->dma_addr; + + go2001_dbg(gdev, 4, "Mapping plane %u: 0x%08llx, chunks: %d in HW\n", + i, dma_desc->map_addr, dma_desc->num_entries); + go2001_print_mmap_list(gdev, dma_desc); + dma_cache_sync(dev, dma_desc->mmap_list, dma_desc->list_size, + DMA_TO_DEVICE); + } + + go2001_queue_msg(ctx, msg); + + buf->mapped = true; + + return 0; +} + +void go2001_unmap_buffer(struct go2001_ctx *ctx, struct go2001_buffer *buf) +{ + struct go2001_release_mmap_param *param; + struct go2001_dev *gdev = ctx->gdev; + struct vb2_buffer *vb = &buf->vb; + struct go2001_msg *msg; + unsigned int i; + + if (!buf->mapped) { + go2001_dbg(gdev, 1, "Buffer not mapped\n"); + return; + } + + if (vb->num_planes > GO2001_MMAP_MAX_ENTRIES) { + go2001_dbg(gdev, 1, "Too many planes\n"); + return; + } + + go2001_dbg(gdev, 3, "Unmapping buffer %p from HW\n", buf); + + msg = prepare_msg(gdev, GO2001_VM_RELEASE_MMAP, sizeof(*param)); + if (!msg) + return; + + param = msg_to_param(msg); + param->dir = V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) ? + GO2001_VSM_DIR_IN : + GO2001_VSM_DIR_OUT; + param->count = vb->num_planes; + for (i = 0; i < vb->num_planes; ++i) { + param->addr[i] = buf->dma_desc[i].map_addr; + go2001_dbg(gdev, 4, "Unmapping plane %u, 0x%08llx from HW\n", + i, buf->dma_desc[i].map_addr); + } + + go2001_queue_msg_and_wait(ctx, msg); + + buf->mapped = false; +} + +int go2001_unmap_buffers(struct go2001_ctx *ctx, bool unmap_src, bool unmap_dst) +{ + struct go2001_release_mmap_param *param; + struct go2001_msg *msg; + + if (WARN_ON(!unmap_src && !unmap_dst)) + return 0; + + msg = prepare_msg(ctx->gdev, GO2001_VM_RELEASE_MMAP, sizeof(*param)); + if (!msg) + return -ENOMEM; + param = msg_to_param(msg); + param->dir |= (unmap_src ? GO2001_VSM_DIR_IN : 0); + param->dir |= (unmap_dst ? GO2001_VSM_DIR_OUT : 0); + + return go2001_queue_msg_and_wait(ctx, msg); +} + +static int go2001_build_dec_msg(struct go2001_ctx *ctx, struct go2001_msg *msg, + struct go2001_buffer *src_buf, + struct go2001_buffer *dst_buf) +{ + struct go2001_dev *gdev = ctx->gdev; + struct go2001_empty_buffer_dec_param *param; + int i; + + assert_spin_locked(&ctx->qlock); + + if (!src_buf->mapped || (dst_buf && !dst_buf->mapped)) { + go2001_err(gdev, "Buffer(s) not mapped!\n"); + return -EINVAL; + } + + param = msg_to_param(msg); + + param->in_addr = src_buf->dma_desc[0].map_addr; + param->payload_size = vb2_get_plane_payload(&src_buf->vb, 0); + if (dst_buf) { + if (WARN_ON(dst_buf->vb.num_planes > + ARRAY_SIZE(param->out_addr))) + return -EINVAL; + + for (i = 0; i < dst_buf->vb.num_planes; ++i) { + param->out_addr[i] = dst_buf->dma_desc[i].map_addr; + WARN_ON(!IS_ALIGNED(param->out_addr[i], 16)); + } + + if (!ctx->dst_fmt) { + go2001_err(gdev, "Destination format not set\n"); + return -EINVAL; + } + param->raw_fmt = ctx->dst_fmt->hw_format; + } + + param->flags = ctx->need_resume ? + G02001_EMPTY_BUF_DEC_FLAG_RES_CHANGE_DONE : + 0; + ctx->need_resume = false; + + return 0; +} + +static void go2001_update_enc_params(struct go2001_ctx *ctx, + struct go2001_runtime_enc_params *rt_enc_params) { + unsigned long *changed_mask; + struct go2001_enc_params *new_params; + + if (!rt_enc_params->changed_mask) + return; + + changed_mask = rt_enc_params->changed_mask; + new_params = &rt_enc_params->enc_params; + + if (test_and_clear_bit(GO2001_BITRATE_CHANGE, changed_mask)) + ctx->enc_params.bitrate = new_params->bitrate; + + if (test_and_clear_bit(GO2001_FRAMERATE_CHANGE, changed_mask)) { + ctx->enc_params.framerate_num = new_params->framerate_num; + ctx->enc_params.framerate_denom = new_params->framerate_denom; + } + + if (test_and_clear_bit(GO2001_KEYFRAME_REQUESTED, changed_mask)) + ctx->enc_params.request_keyframe = new_params->request_keyframe; +} + +static int go2001_build_enc_msg(struct go2001_ctx *ctx, struct go2001_msg *msg, + struct go2001_buffer *src_buf, + struct go2001_buffer *dst_buf) +{ + struct go2001_empty_buffer_enc_param *param; + struct go2001_dev *gdev = ctx->gdev; + int i; + + if (WARN_ON(!src_buf || !dst_buf)) + return -EINVAL; + + assert_spin_locked(&ctx->qlock); + + if (!src_buf->mapped || !dst_buf->mapped) { + go2001_err(gdev, "Buffer(s) not mapped!\n"); + return -EINVAL; + } + + param = msg_to_param(msg); + + if (WARN_ON(src_buf->vb.num_planes > ARRAY_SIZE(param->in_addr))) + return -EINVAL; + + for (i = 0; i < src_buf->vb.num_planes; ++i) { + param->in_addr[i] = src_buf->dma_desc[i].map_addr; + WARN_ON(!IS_ALIGNED(param->in_addr[i], 16)); + } + param->out_addr = dst_buf->dma_desc[0].map_addr; + param->out_size = vb2_plane_size(&dst_buf->vb, 0); + + go2001_update_enc_params(ctx, &src_buf->rt_enc_params); + if (ctx->enc_params.request_keyframe) { + param->frame_type = GO2001_EMPTY_BUF_ENC_FRAME_KEYFRAME; + ctx->enc_params.frames_since_intra = 0; + ctx->enc_params.request_keyframe = false; + } else { + param->frame_type = GO2001_EMPTY_BUF_ENC_FRAME_PRED; + } + + if (WARN_ON(ctx->enc_params.framerate_num == 0)) + return -EINVAL; + + param->time_increment = GO2001_MAX_FPS / ctx->enc_params.framerate_num; + param->bits_per_sec = ctx->enc_params.bitrate; + ctx->enc_params.bitrate = 0; + + if (!ctx->enc_params.multi_ref_frame_mode || + ctx->enc_params.frames_since_intra % 4 == 0) { + /* Frame controls for temporal layer 0. */ + param->ipf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE_AND_REFRESH; + param->grf_frame_ctrl = GO2001_FRM_CTRL_NO_REFRESH; + param->arf_frame_ctrl = GO2001_FRM_CTRL_NO_REFRESH; + } else if (ctx->enc_params.frames_since_intra % 2 == 0) { + /* Frame controls for temporal layer 1. */ + param->ipf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE; + param->grf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE_AND_REFRESH; + param->arf_frame_ctrl = GO2001_FRM_CTRL_NO_REFRESH; + } else { + /* Frame controls for temporal layer 2. */ + param->ipf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE; + param->grf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE; + param->arf_frame_ctrl = GO2001_FRM_CTRL_REFERENCE_AND_REFRESH; + } + ctx->enc_params.frames_since_intra++; + + return 0; +} + +static void go2001_flush(struct go2001_ctx *ctx, struct go2001_buffer *src_buf) +{ + assert_spin_locked(&ctx->qlock); + + go2001_dbg(ctx->gdev, 4, "Flushing at src_buf ts=%llu\n", + src_buf->vb.timestamp); + + /* + * Since VPX has no frame reordering and buffers are returned as + * soon as they are decoded, there is no need trigger anything on the + * destination queue. Just return the flush buffer to userspace. + */ + list_del(&src_buf->list); + vb2_buffer_done(&src_buf->vb, VB2_BUF_STATE_DONE); +} + +int go2001_prepare_gbuf(struct go2001_ctx *ctx, struct go2001_buffer *gbuf, + bool is_src) +{ + struct go2001_msg *msg; + size_t size; + + if (!is_src) + return 0; + + if (WARN_ON(gbuf->msg)) + return -EINVAL; + + if (ctx->codec_mode == CODEC_MODE_DECODER) + size = sizeof(struct go2001_empty_buffer_dec_param); + else + size = sizeof(struct go2001_empty_buffer_enc_param); + + msg = prepare_msg(ctx->gdev, GO2001_VM_EMPTY_BUFFER, size); + if (!msg) + return -ENOMEM; + + gbuf->msg = msg; + return 0; +} + +void go2001_finish_gbuf(struct go2001_ctx *ctx, struct go2001_buffer *gbuf) +{ + if (gbuf->msg) { + free_msg(ctx->gdev, gbuf->msg); + gbuf->msg = NULL; + } +} + +int go2001_schedule_frames(struct go2001_ctx *ctx) +{ + struct go2001_dev *gdev = ctx->gdev; + struct go2001_job *job = &ctx->job; + struct go2001_msg *msg = NULL; + struct go2001_buffer *src_buf; + struct go2001_buffer *dst_buf; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&ctx->qlock, flags); + if (job->src_buf) { + go2001_dbg(gdev, 5, "Job already running\n"); + goto out; + } + + if (WARN_ON(job->dst_buf)) { + ret = -EINVAL; + goto out; + } + + go2001_dbg(gdev, 5, "State: %d\n", ctx->state); +again: + src_buf = NULL; + dst_buf = NULL; + + switch (ctx->state) { + case NEED_HEADER_INFO: + if (WARN_ON(ctx->codec_mode == CODEC_MODE_ENCODER)) { + ret = -EINVAL; + goto out; + } + + if (!list_empty(&ctx->src_buf_q)) { + src_buf = list_first_entry(&ctx->src_buf_q, + struct go2001_buffer, list); + } + break; + + case RUNNING: + if (!list_empty(&ctx->src_buf_q) && + !list_empty(&ctx->dst_buf_q)) { + src_buf = list_first_entry(&ctx->src_buf_q, + struct go2001_buffer, list); + dst_buf = list_first_entry(&ctx->dst_buf_q, + struct go2001_buffer, list); + } + break; + + default: + break; + } + + if (!src_buf) + goto out; + + msg = src_buf->msg; + if (WARN_ON(!msg)) + goto out; + + if (ctx->codec_mode == CODEC_MODE_DECODER) { + if (vb2_get_plane_payload(&src_buf->vb, 0) == 0) { + /* Flush buffer */ + go2001_flush(ctx, src_buf); + goto again; + } + + ret = go2001_build_dec_msg(ctx, msg, src_buf, dst_buf); + } else { + ret = go2001_build_enc_msg(ctx, msg, src_buf, dst_buf); + } + if (ret) + goto out; + + job->src_buf = src_buf; + if (dst_buf) + job->dst_buf = dst_buf; + + src_buf->msg = NULL; + spin_unlock_irqrestore(&ctx->qlock, flags); + + go2001_queue_msg(ctx, msg); + return 0; +out: + if (ret) { + go2001_set_ctx_state(ctx, ERROR); + go2001_err(gdev, "Error scheduling frames\n"); + } + + spin_unlock_irqrestore(&ctx->qlock, flags); + return ret; +} + +static int go2001_query_hw_version(struct go2001_dev *gdev) +{ + struct go2001_msg *msg; + + msg = prepare_msg(gdev, GO2001_VM_GET_VERSION, 0); + if (!msg) + return -ENOMEM; + + return go2001_queue_ctrl_msg_and_wait(gdev, msg); +} + +static int go2001_set_log_level(struct go2001_dev *gdev, u32 level) +{ + struct go2001_set_log_level_param *param; + struct go2001_msg *msg; + + if (level != GO2001_LOG_LEVEL_DISABLED && level > GO2001_LOG_LEVEL_MAX) + level = GO2001_LOG_LEVEL_MAX; + + msg = prepare_msg(gdev, GO2001_VM_SET_LOG_LEVEL, sizeof(*param)); + if (!msg) + return -ENOMEM; + + param = msg_to_param(msg); + param->level = level; + + return go2001_queue_ctrl_msg_and_wait(gdev, msg); +} + +int go2001_init_codec(struct go2001_ctx *ctx) +{ + int ret = 0; + + if (WARN_ON(ctx->hw_inst.session_id != 0)) + return -EINVAL; + + if (ctx->codec_mode == CODEC_MODE_DECODER) + ret = go2001_init_decoder(ctx); + else + ret = go2001_init_encoder(ctx); + + return ret; +} + +int go2001_init(struct go2001_dev *gdev) +{ + int ret; + + WARN_ON(!mutex_is_locked(&gdev->lock)); + + WARN_ON(!list_empty(&gdev->inst_list)); + INIT_LIST_HEAD(&gdev->inst_list); + + WARN_ON(!list_empty(&gdev->new_inst_list)); + INIT_LIST_HEAD(&gdev->new_inst_list); + + go2001_init_hw_inst(&gdev->ctrl_inst, 0); + list_add_tail(&gdev->ctrl_inst.inst_entry, &gdev->inst_list); + gdev->curr_hw_inst = &gdev->ctrl_inst; + + ret = go2001_load_firmware(gdev); + if (ret) { + go2001_err(gdev, "Failed loading firmware\n"); + return ret; + } + + ret = go2001_init_messaging(gdev); + if (ret) { + go2001_err(gdev, "Failed to init messaging\n"); + return ret; + } + + ret = go2001_query_hw_version(gdev); + if (ret) { + go2001_err(gdev, "Failed querying HW version\n"); + return ret; + } + + ret = go2001_set_log_level(gdev, go2001_fw_debug_level); + if (ret) { + go2001_err(gdev, "Failed setting log level\n"); + return ret; + } + + return 0; +} diff --git a/drivers/media/pci/go2001/go2001_hw.h b/drivers/media/pci/go2001/go2001_hw.h new file mode 100644 index 0000000..5cbfd49 --- /dev/null +++ b/drivers/media/pci/go2001/go2001_hw.h @@ -0,0 +1,55 @@ +/* + * go2001 - GO2001 codec driver. + * + * Author : Pawel Osciak <posciak@xxxxxxxxxxxx> + * + * Copyright (C) 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef _MEDIA_PCI_GO2001_GO2001_HW_H_ +#define _MEDIA_PCI_GO2001_GO2001_HW_H_ + +#include "go2001.h" + +int go2001_map_iomem(struct go2001_dev *gdev); +void go2001_unmap_iomem(struct go2001_dev *gdev); + +int go2001_init(struct go2001_dev *gdev); + +int go2001_init_codec(struct go2001_ctx *ctx); +void go2001_release_codec(struct go2001_ctx *ctx); + +int go2001_set_dec_raw_fmt(struct go2001_ctx *ctx); + +int go2001_map_buffer(struct go2001_ctx *ctx, struct go2001_buffer *buf); +void go2001_unmap_buffer(struct go2001_ctx *ctx, struct go2001_buffer *buf); +int go2001_unmap_buffers(struct go2001_ctx *ctx, bool unmap_src, + bool unmap_dst); + +int go2001_prepare_gbuf(struct go2001_ctx *ctx, struct go2001_buffer *gbuf, + bool is_src); +void go2001_finish_gbuf(struct go2001_ctx *ctx, struct go2001_buffer *gbuf); +int go2001_schedule_frames(struct go2001_ctx *ctx); +void go2001_wait_for_ctx_done(struct go2001_ctx *ctx); +void go2001_send_pending(struct go2001_dev *gdev); +void go2001_cancel_hw_inst_locked(struct go2001_dev *gdev, + struct go2001_hw_inst *hw_inst); +void go2001_cancel_all_hw_inst_locked(struct go2001_dev *gdev); + +void go2001_init_hw_inst(struct go2001_hw_inst *inst, u32 inst_id); + +int go2001_get_reply(struct go2001_dev *gdev, struct go2001_msg *msg); + +#endif /* _MEDIA_PCI_GO2001_GO2001_HW_H_ */ diff --git a/drivers/media/pci/go2001/go2001_proto.h b/drivers/media/pci/go2001/go2001_proto.h new file mode 100644 index 0000000..a5f8b67 --- /dev/null +++ b/drivers/media/pci/go2001/go2001_proto.h @@ -0,0 +1,359 @@ +/* + * go2001 - GO2001 codec driver. + * + * Author : Pawel Osciak <posciak@xxxxxxxxxxxx> + * + * Copyright (C) 2017 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef _MEDIA_PCI_GO2001_GO2001_PROTO_H_ +#define _MEDIA_PCI_GO2001_GO2001_PROTO_H_ + +struct go2001_msg_ring_desc { + u32 msg_size; + u32 start_off; + u32 end_off; + u32 wr_off; + u32 rd_off; +} __packed; + +#define GO2001_CTRL_SESSION_ID 0 +struct go2001_msg_hdr { + u32 size; + u32 session_id; + u32 sequence_id; + u32 type; + u32 status; +} __packed; + +#define GO2001_MAX_MSG_PAYLOAD_SIZE SZ_256 +struct go2001_msg_payload { + struct go2001_msg_hdr hdr; + u8 param[GO2001_MAX_MSG_PAYLOAD_SIZE - sizeof(struct go2001_msg_hdr)]; +} __packed; + +#define go2001_calc_payload_size(param_size) \ + (sizeof(struct go2001_msg_hdr) + (param_size)) + +enum go2001_msg_status { + GO2001_STATUS_OK = 0, + GO2001_STATUS_FAIL = 1, + GO2001_STATUS_RES_NA = 2, + GO2001_STATUS_INVALID_PARAM = 3, + GO2001_STATUS_NOT_IMPLEMENTED = 4, + GO2001_STATUS_NEW_PICTURE_SIZE = 5, + GO2001_STATUS_WAITING_PICTURE_SIZE_CHANGED = 6, + GO2001_STATUS_STREAM_ERROR = 7, + GO2001_STATUS_NO_OUTPUT = 8, + GO2001_STATUS_INFO_NOT_READY = 9, + GO2001_STATUS_RESTART_SYS = 10, +}; + +enum go2001_msg_type { + GO2001_VM_INIT_DECODER = 0x100, + GO2001_VM_INIT_ENCODER = 0x101, + GO2001_VM_INIT_PASSTHROUGH = 0x102, + GO2001_VM_GET_VERSION = 0x104, + GO2001_VM_SET_MMAP = 0x105, + GO2001_VM_RELEASE_MMAP = 0x106, + GO2001_VM_EMPTY_BUFFER = 0x107, + GO2001_VM_GET_INFO = 0x108, + GO2001_VM_SET_CTRL = 0x109, + GO2001_VM_GET_CTRL = 0x10a, + GO2001_VM_RELEASE = 0x10b, + GO2001_VM_RELEASE_ALL = 0x10c, + GO2001_VM_EVENT_ASSERT = 0x200, + GO2001_VM_EVENT_LOG = 0x201, + GO2001_VM_SET_LOG_LEVEL = 0x300, +}; + +#define GO2001_MSG_RING_MEM_OFFSET 0x401000 +#define GO2001_MSG_RING_MEM_SIZE 0x2000 +#define GO2001_RX_RING_DESC_OFFSET 0x0 +#define GO2001_TX_RING_DESC_OFFSET 0x100 + +#define GO2001_FMT_NV12 0x20001 +#define GO2001_FMT_NV12_TILED_8X4 0x20002 +#define GO2001_FMT_ARGB 0x20003 + +enum go2001_hw_format_coded { + GO2001_FMT_VP8 = 1, + GO2001_FMT_VP9 = 2, +}; + +enum go2001_hw_format_raw { + GO2001_FMT_YUV420_PLANAR = 0, + GO2001_FMT_YUV420_SEMIPLANAR = 1, + GO2001_FMT_YUV420_SEMIPLANAR_VU = 2, + GO2001_FMT_YUV422_INTERLEAVED_YUYV = 3, + GO2001_FMT_YUV422_INTERLEAVED_UYVY = 4, + GO2001_FMT_RGB565 = 5, + GO2001_FMT_BGR565 = 6, + GO2001_FMT_RGB555 = 7, + GO2001_FMT_BGR555 = 8, + GO2001_FMT_RGB444 = 9, + GO2001_FMT_BGR444 = 10, + GO2001_FMT_RGB888 = 11, + GO2001_FMT_BGR888 = 12, + GO2001_FMT_RGB101010 = 13, + GO2001_FMT_BGR101010 = 14, +}; + +struct go2001_init_decoder_param { + u32 coded_fmt; + u32 concealment; +} __packed; + +struct go2001_init_decoder_reply { + u32 session_id; + u32 input_address; + u32 input_buffer_size; + u32 output_address; +} __packed; + +struct go2001_init_encoder_param { + u32 session_id; + u32 num_ref_frames; + u32 width; + u32 height; + u32 orig_width; + u32 orig_height; + u32 framerate_num; + u32 framerate_denom; + u32 raw_fmt; +} __packed; + +struct go2001_init_encoder_reply { +} __packed; + +struct go2001_get_info_reply { + u32 vpx_version; + u32 vpx_profile; + u32 visible_width; + u32 visible_height; + u32 coded_width; + u32 coded_height; + u32 scaled_width; + u32 scaled_height; +} __packed; + +struct go2001_get_version_reply { + u32 hw_ver; + u32 sw_ver; + u32 vp8dec_hw_ver; + u32 vp8dec_sw_ver; + u32 vp8enc_hw_ver; + u32 vp8enc_sw_ver; + u32 vp9dec_hw_ver; + u32 vp9dec_sw_ver; +} __packed; + +struct go2001_enc_coding_ctrl_area { + u32 enabled; + u32 top; + u32 left; + u32 bottom; + u32 right; +} __packed; + +#define GO2001_CODING_CTRL_INTERP_FILTER_BICUBIC 0x0 +#define GO2001_CODING_CTRL_INTERP_FILTER_BILINEAR 0x1 +#define GO2001_CODING_CTRL_INTERP_FILTER_NONE 0x2 + +#define GO2001_CODING_CTRL_DEBLOCK_FILTER_NORMAL 0x0 +#define GO2001_CODING_CTRL_DEBLOCK_FILTER_SIMPLE 0x1 + +#define GO2001_CODING_CTRL_MV_DISABLED 0x0 +#define GO2001_CODING_CTRL_MV_ADAPTIVE 0x1 +#define GO2001_CODING_CTRL_MV_ENABLED 0x2 + +#define GO2001_CODING_CTRL_QM_PSNR 0x0 +#define GO2001_CODING_CTRL_QM_SSIM 0x1 +struct go2001_enc_coding_ctrl { + u32 interp_filter_type; + u32 deblock_filter_type; + u32 deblock_filter_level; + u32 deblock_filter_sharpness; + u32 num_dct_parts; + u32 error_resilient; + u32 split_mv; + u32 quarter_pixel_mv; + u32 cir_start; + u32 cir_interval; + struct go2001_enc_coding_ctrl_area intra_area; + struct go2001_enc_coding_ctrl_area roi1_area; + struct go2001_enc_coding_ctrl_area roi2_area; + s32 roi1_delta_qp; + s32 roi2_delta_qp; + u32 deadzone_enabled; + u32 max_num_passes; + u32 quality_metric; + s32 qp_delta[5]; + s32 adaptive_roi; + s32 adaptive_roi_color; +} __packed; + +struct go2001_enc_rate_ctrl { +} __packed; + +struct go2001_enc_preprocess_ctrl { +} __packed; + +enum go2001_hw_ctrl_type { + GO2001_HW_CTRL_TYPE_RATE = 1, + GO2001_HW_CTRL_TYPE_CODING = 2, + GO2001_HW_CTRL_TYPE_PREPROCESS = 3, +}; + +union go2001_hw_ctrl { + struct go2001_enc_rate_ctrl rate_ctrl; + struct go2001_enc_coding_ctrl coding_ctrl; + struct go2001_enc_preprocess_ctrl prep_ctrl; +} __packed; + +struct go2001_set_ctrl_param { + u32 type; + union go2001_hw_ctrl ctrl; +} __packed; + +struct go2001_set_ctrl_reply { +} __packed; + +#define G02001_EMPTY_BUF_DEC_FLAG_RES_CHANGE_DONE 0x1 +struct go2001_empty_buffer_dec_param { + u64 in_addr; + u32 payload_size; + u64 out_addr[2]; + u32 flags; + u32 raw_fmt; +} __packed; + +struct go2001_empty_buffer_dec_reply { + struct go2001_get_info_reply info; + u32 intra_frame; + u32 golden_frame; + u32 num_error_mbs; + u32 num_slice_rows; +} __packed; + +#define GO2001_EMPTY_BUF_ENC_FRAME_KEYFRAME 0x0 +#define GO2001_EMPTY_BUF_ENC_FRAME_PRED 0x1 + +enum go2001_enc_frame_control { + GO2001_FRM_CTRL_NO_REFRESH = 0, + GO2001_FRM_CTRL_REFERENCE = 1, + GO2001_FRM_CTRL_REFRESH = 2, + GO2001_FRM_CTRL_REFERENCE_AND_REFRESH = 3, +}; + +struct go2001_empty_buffer_enc_param { + u64 in_addr[3]; + u64 out_addr; + u32 out_size; + u32 frame_type; + u32 time_increment; + u64 stab_in_addr; + u32 ipf_frame_ctrl; + u32 grf_frame_ctrl; + u32 arf_frame_ctrl; + u32 layer_id; + u32 bits_per_sec; +} __packed; + +#define VP8_MAX_NUM_PARTITIONS 9 +struct go2001_empty_buffer_enc_reply { + u32 frame_type; + u32 partition_off[VP8_MAX_NUM_PARTITIONS]; + u32 partition_size[VP8_MAX_NUM_PARTITIONS]; + u32 payload_size; + u32 ipf_frame_ctrl; + u32 grf_frame_ctrl; + u32 arf_frame_ctrl; +} __packed; + +struct go2001_mmap_list_desc { + u64 first_entry_dma_addr; + u32 entry_count; + u64 mmap_list_addr; +} __packed; + +#define GO2001_VSM_DIR_IN BIT(0) +#define GO2001_VSM_DIR_OUT BIT(1) +#define GO2001_MMAP_MAX_ENTRIES 9 +struct go2001_set_mmap_param { + u32 dir; + u32 count; + struct go2001_mmap_list_desc mmap_list_desc[GO2001_MMAP_MAX_ENTRIES]; +} __packed; + +struct go2001_mmap_list_entry { + u64 dma_addr; + u32 size; +} __packed; + +struct go2001_release_mmap_param { + u32 dir; + u32 count; + u64 addr[GO2001_MMAP_MAX_ENTRIES]; +} __packed; + +struct go2001_event_assert_reply { + u8 filename[32]; + u8 funcname[32]; + u8 expr[32]; + u32 line_no; +} __packed; + +struct go2001_event_log_reply { + u8 data[128]; +} __packed; + +#define GO2001_LOG_LEVEL_MAX 5 +#define GO2001_LOG_LEVEL_DISABLED 0xFFFFFFFF +struct go2001_set_log_level_param { + u32 level; +} __packed; + +struct go2001_set_log_level_reply { + u32 level; +} __packed; + +struct go2001_boot_hdr { + u32 signature; + u32 entry_addr; + u32 size; + u32 checksum; +} __packed; + +#define GO2001_FW_HDR_OFF 0x20afc0 +#define GO2001_FW_STOP 0x212010 +#define GO2001_FW_STOP_BIT BIT(20) + +#define GO2001_BOOT_FW_NAME "go2001-boot.fw" +#define GO2001_BOOT_FW_OFF 0x207000 +#define GO2001_BOOT_FW_ENTRY_BASE 0xd0000000 + +#define GO2001_FW_NAME "go2001.fw" +#define GO2001_FW_OFF 0 +#define GO2001_FW_ENTRY_BASE 0 + +#define GO2001_FW_SIGNATURE \ +(((u32)'P') | (((u32)'C') << 8) | (((u32)'I') << 16) | (((u32)'E') << 24)) +#define GO2001_FW_DONE_SIGNATURE \ +(((u32)'D') | (((u32)'O') << 8) | (((u32)'N') << 16) | (((u32)'E') << 24)) + +#define GO2001_FW_MAX_SIZE SZ_1M + +#endif /* _MEDIA_PCI_GO2001_GO2001_PROTO_H_ */ -- 2.7.4
