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media: allegro: move mail definitions to separate file
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Move the mail definitions from the driver core to a dedicated file.

The mails that are exchanged between driver and firmware are not stable
across firmware versions. This is in preparation to make the driver able
to handle multiple firmware version by having dedicated code for
handling mails.

Signed-off-by: Michael Tretter <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
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@tretter @mchehab
tretter authored and mchehab committed Mar 20, 2020
1 parent 09e6a7d commit 6412d22
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Showing 4 changed files with 302 additions and 274 deletions.
2 changes: 1 addition & 1 deletion drivers/staging/media/allegro-dvt/Makefile
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@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0

allegro-objs := allegro-core.o nal-h264.o
allegro-objs := allegro-core.o nal-h264.o allegro-mail.o

obj-$(CONFIG_VIDEO_ALLEGRO_DVT) += allegro.o
274 changes: 1 addition & 273 deletions drivers/staging/media/allegro-dvt/allegro-core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@
#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-v4l2.h>

#include "allegro-mail.h"
#include "nal-h264.h"

/*
Expand Down Expand Up @@ -284,279 +285,6 @@ static const struct fw_info supported_firmware[] = {
},
};

enum mcu_msg_type {
MCU_MSG_TYPE_INIT = 0x0000,
MCU_MSG_TYPE_CREATE_CHANNEL = 0x0005,
MCU_MSG_TYPE_DESTROY_CHANNEL = 0x0006,
MCU_MSG_TYPE_ENCODE_FRAME = 0x0007,
MCU_MSG_TYPE_PUT_STREAM_BUFFER = 0x0012,
MCU_MSG_TYPE_PUSH_BUFFER_INTERMEDIATE = 0x000e,
MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE = 0x000f,
};

static const char *msg_type_name(enum mcu_msg_type type)
{
static char buf[9];

switch (type) {
case MCU_MSG_TYPE_INIT:
return "INIT";
case MCU_MSG_TYPE_CREATE_CHANNEL:
return "CREATE_CHANNEL";
case MCU_MSG_TYPE_DESTROY_CHANNEL:
return "DESTROY_CHANNEL";
case MCU_MSG_TYPE_ENCODE_FRAME:
return "ENCODE_FRAME";
case MCU_MSG_TYPE_PUT_STREAM_BUFFER:
return "PUT_STREAM_BUFFER";
case MCU_MSG_TYPE_PUSH_BUFFER_INTERMEDIATE:
return "PUSH_BUFFER_INTERMEDIATE";
case MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE:
return "PUSH_BUFFER_REFERENCE";
default:
snprintf(buf, sizeof(buf), "(0x%04x)", type);
return buf;
}
}

struct mcu_msg_header {
u16 length; /* length of the body in bytes */
u16 type;
} __attribute__ ((__packed__));

struct mcu_msg_init_request {
struct mcu_msg_header header;
u32 reserved0; /* maybe a unused channel id */
u32 suballoc_dma;
u32 suballoc_size;
s32 l2_cache[3];
} __attribute__ ((__packed__));

struct mcu_msg_init_response {
struct mcu_msg_header header;
u32 reserved0;
} __attribute__ ((__packed__));

struct mcu_msg_create_channel {
struct mcu_msg_header header;
u32 user_id;
u16 width;
u16 height;
u32 format;
u32 colorspace;
u32 src_mode;
u8 profile;
u16 constraint_set_flags;
s8 codec;
u16 level;
u16 tier;
u32 sps_param;
u32 pps_param;

u32 enc_option;
#define AL_OPT_WPP BIT(0)
#define AL_OPT_TILE BIT(1)
#define AL_OPT_LF BIT(2)
#define AL_OPT_LF_X_SLICE BIT(3)
#define AL_OPT_LF_X_TILE BIT(4)
#define AL_OPT_SCL_LST BIT(5)
#define AL_OPT_CONST_INTRA_PRED BIT(6)
#define AL_OPT_QP_TAB_RELATIVE BIT(7)
#define AL_OPT_FIX_PREDICTOR BIT(8)
#define AL_OPT_CUSTOM_LDA BIT(9)
#define AL_OPT_ENABLE_AUTO_QP BIT(10)
#define AL_OPT_ADAPT_AUTO_QP BIT(11)
#define AL_OPT_TRANSFO_SKIP BIT(13)
#define AL_OPT_FORCE_REC BIT(15)
#define AL_OPT_FORCE_MV_OUT BIT(16)
#define AL_OPT_FORCE_MV_CLIP BIT(17)
#define AL_OPT_LOWLAT_SYNC BIT(18)
#define AL_OPT_LOWLAT_INT BIT(19)
#define AL_OPT_RDO_COST_MODE BIT(20)

s8 beta_offset;
s8 tc_offset;
u16 reserved10;
u32 unknown11;
u32 unknown12;
u16 num_slices;
u16 prefetch_auto;
u32 prefetch_mem_offset;
u32 prefetch_mem_size;
u16 clip_hrz_range;
u16 clip_vrt_range;
u16 me_range[4];
u8 max_cu_size;
u8 min_cu_size;
u8 max_tu_size;
u8 min_tu_size;
u8 max_transfo_depth_inter;
u8 max_transfo_depth_intra;
u16 reserved20;
u32 entropy_mode;
u32 wp_mode;

/* rate control param */
u32 rate_control_mode;
u32 initial_rem_delay;
u32 cpb_size;
u16 framerate;
u16 clk_ratio;
u32 target_bitrate;
u32 max_bitrate;
u16 initial_qp;
u16 min_qp;
u16 max_qp;
s16 ip_delta;
s16 pb_delta;
u16 golden_ref;
u16 golden_delta;
u16 golden_ref_frequency;
u32 rate_control_option;

/* gop param */
u32 gop_ctrl_mode;
u32 freq_idr;
u32 freq_lt;
u32 gdr_mode;
u16 gop_length;
u8 num_b;
u8 freq_golden_ref;

u32 subframe_latency;
u32 lda_control_mode;
u32 unknown41;
} __attribute__ ((__packed__));

struct mcu_msg_create_channel_response {
struct mcu_msg_header header;
u32 channel_id;
u32 user_id;
u32 options;
u32 num_core;
u32 pps_param;
u32 int_buffers_count;
u32 int_buffers_size;
u32 rec_buffers_count;
u32 rec_buffers_size;
u32 reserved;
u32 error_code;
} __attribute__ ((__packed__));

struct mcu_msg_destroy_channel {
struct mcu_msg_header header;
u32 channel_id;
} __attribute__ ((__packed__));

struct mcu_msg_destroy_channel_response {
struct mcu_msg_header header;
u32 channel_id;
} __attribute__ ((__packed__));

struct mcu_msg_push_buffers_internal_buffer {
u32 dma_addr;
u32 mcu_addr;
u32 size;
} __attribute__ ((__packed__));

struct mcu_msg_push_buffers_internal {
struct mcu_msg_header header;
u32 channel_id;
struct mcu_msg_push_buffers_internal_buffer buffer[0];
} __attribute__ ((__packed__));

struct mcu_msg_put_stream_buffer {
struct mcu_msg_header header;
u32 channel_id;
u32 dma_addr;
u32 mcu_addr;
u32 size;
u32 offset;
u64 stream_id;
} __attribute__ ((__packed__));

struct mcu_msg_encode_frame {
struct mcu_msg_header header;
u32 channel_id;
u32 reserved;

u32 encoding_options;
#define AL_OPT_USE_QP_TABLE BIT(0)
#define AL_OPT_FORCE_LOAD BIT(1)
#define AL_OPT_USE_L2 BIT(2)
#define AL_OPT_DISABLE_INTRA BIT(3)
#define AL_OPT_DEPENDENT_SLICES BIT(4)

s16 pps_qp;
u16 padding;
u64 user_param;
u64 src_handle;

u32 request_options;
#define AL_OPT_SCENE_CHANGE BIT(0)
#define AL_OPT_RESTART_GOP BIT(1)
#define AL_OPT_USE_LONG_TERM BIT(2)
#define AL_OPT_UPDATE_PARAMS BIT(3)

/* u32 scene_change_delay (optional) */
/* rate control param (optional) */
/* gop param (optional) */
u32 src_y;
u32 src_uv;
u32 stride;
u32 ep2;
u64 ep2_v;
} __attribute__ ((__packed__));

struct mcu_msg_encode_frame_response {
struct mcu_msg_header header;
u32 channel_id;
u64 stream_id; /* see mcu_msg_put_stream_buffer */
u64 user_param; /* see mcu_msg_encode_frame */
u64 src_handle; /* see mcu_msg_encode_frame */
u16 skip;
u16 is_ref;
u32 initial_removal_delay;
u32 dpb_output_delay;
u32 size;
u32 frame_tag_size;
s32 stuffing;
s32 filler;
u16 num_column;
u16 num_row;
u16 qp;
u8 num_ref_idx_l0;
u8 num_ref_idx_l1;
u32 partition_table_offset;
s32 partition_table_size;
u32 sum_complex;
s32 tile_width[4];
s32 tile_height[22];
u32 error_code;

u32 slice_type;
#define AL_ENC_SLICE_TYPE_B 0
#define AL_ENC_SLICE_TYPE_P 1
#define AL_ENC_SLICE_TYPE_I 2

u32 pic_struct;
u8 is_idr;
u8 is_first_slice;
u8 is_last_slice;
u8 reserved;
u16 pps_qp;
u16 reserved1;
u32 reserved2;
} __attribute__ ((__packed__));

union mcu_msg_response {
struct mcu_msg_header header;
struct mcu_msg_init_response init;
struct mcu_msg_create_channel_response create_channel;
struct mcu_msg_destroy_channel_response destroy_channel;
struct mcu_msg_encode_frame_response encode_frame;
};

static inline u32 to_mcu_addr(struct allegro_dev *dev, dma_addr_t phys)
{
if (upper_32_bits(phys) || (lower_32_bits(phys) & MCU_CACHE_OFFSET))
Expand Down
37 changes: 37 additions & 0 deletions drivers/staging/media/allegro-dvt/allegro-mail.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,37 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 Pengutronix, Michael Tretter <[email protected]>
*
* Helper functions for handling messages that are send via mailbox to the
* Allegro VCU firmware.
*/

#include <linux/export.h>

#include "allegro-mail.h"

const char *msg_type_name(enum mcu_msg_type type)
{
static char buf[9];

switch (type) {
case MCU_MSG_TYPE_INIT:
return "INIT";
case MCU_MSG_TYPE_CREATE_CHANNEL:
return "CREATE_CHANNEL";
case MCU_MSG_TYPE_DESTROY_CHANNEL:
return "DESTROY_CHANNEL";
case MCU_MSG_TYPE_ENCODE_FRAME:
return "ENCODE_FRAME";
case MCU_MSG_TYPE_PUT_STREAM_BUFFER:
return "PUT_STREAM_BUFFER";
case MCU_MSG_TYPE_PUSH_BUFFER_INTERMEDIATE:
return "PUSH_BUFFER_INTERMEDIATE";
case MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE:
return "PUSH_BUFFER_REFERENCE";
default:
snprintf(buf, sizeof(buf), "(0x%04x)", type);
return buf;
}
}
EXPORT_SYMBOL(msg_type_name);
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