vdec_h264_req_if.c

  1// SPDX-License-Identifier: GPL-2.0
  2
  3#include <linux/module.h>
  4#include <linux/slab.h>
  5#include <media/v4l2-mem2mem.h>
  6#include <media/v4l2-h264.h>
  7#include <media/videobuf2-dma-contig.h>
  8
  9#include "../mtk_vcodec_dec.h"
 10#include "../../common/mtk_vcodec_intr.h"
 11#include "../vdec_drv_base.h"
 12#include "../vdec_drv_if.h"
 13#include "../vdec_vpu_if.h"
 14#include "vdec_h264_req_common.h"
 15
 16/*
 17 * struct mtk_h264_dec_slice_param  - parameters for decode current frame
 18 */
 19struct mtk_h264_dec_slice_param {
 20	struct mtk_h264_sps_param			sps;
 21	struct mtk_h264_pps_param			pps;
 22	struct slice_api_h264_scaling_matrix		scaling_matrix;
 23	struct slice_api_h264_decode_param		decode_params;
 24	struct mtk_h264_dpb_info h264_dpb_info[16];
 25};
 26
 27/**
 28 * struct vdec_h264_dec_info - decode information
 29 * @dpb_sz		: decoding picture buffer size
 30 * @resolution_changed  : flag to notify that a resolution change happened
 31 * @realloc_mv_buf	: flag to notify driver to re-allocate mv buffer
 32 * @cap_num_planes	: number planes of capture buffer
 33 * @bs_dma		: Input bit-stream buffer dma address
 34 * @y_fb_dma		: Y frame buffer dma address
 35 * @c_fb_dma		: C frame buffer dma address
 36 * @vdec_fb_va		: VDEC frame buffer struct virtual address
 37 */
 38struct vdec_h264_dec_info {
 39	u32 dpb_sz;
 40	u32 resolution_changed;
 41	u32 realloc_mv_buf;
 42	u32 cap_num_planes;
 43	u64 bs_dma;
 44	u64 y_fb_dma;
 45	u64 c_fb_dma;
 46	u64 vdec_fb_va;
 47};
 48
 49/**
 50 * struct vdec_h264_vsi - shared memory for decode information exchange
 51 *                        between VPU and Host.
 52 *                        The memory is allocated by VPU then mapping to Host
 53 *                        in vpu_dec_init() and freed in vpu_dec_deinit()
 54 *                        by VPU.
 55 *                        AP-W/R : AP is writer/reader on this item
 56 *                        VPU-W/R: VPU is write/reader on this item
 57 * @pred_buf_dma : HW working prediction buffer dma address (AP-W, VPU-R)
 58 * @mv_buf_dma   : HW working motion vector buffer dma address (AP-W, VPU-R)
 59 * @dec          : decode information (AP-R, VPU-W)
 60 * @pic          : picture information (AP-R, VPU-W)
 61 * @crop         : crop information (AP-R, VPU-W)
 62 * @h264_slice_params : the parameters that hardware use to decode
 63 */
 64struct vdec_h264_vsi {
 65	u64 pred_buf_dma;
 66	u64 mv_buf_dma[H264_MAX_MV_NUM];
 67	struct vdec_h264_dec_info dec;
 68	struct vdec_pic_info pic;
 69	struct v4l2_rect crop;
 70	struct mtk_h264_dec_slice_param h264_slice_params;
 71};
 72
 73/**
 74 * struct vdec_h264_slice_inst - h264 decoder instance
 75 * @num_nalu : how many nalus be decoded
 76 * @ctx      : point to mtk_vcodec_dec_ctx
 77 * @pred_buf : HW working prediction buffer
 78 * @mv_buf   : HW working motion vector buffer
 79 * @vpu      : VPU instance
 80 * @vsi_ctx  : Local VSI data for this decoding context
 81 * @h264_slice_param : the parameters that hardware use to decode
 82 * @dpb : decoded picture buffer used to store reference buffer information
 83 */
 84struct vdec_h264_slice_inst {
 85	unsigned int num_nalu;
 86	struct mtk_vcodec_dec_ctx *ctx;
 87	struct mtk_vcodec_mem pred_buf;
 88	struct mtk_vcodec_mem mv_buf[H264_MAX_MV_NUM];
 89	struct vdec_vpu_inst vpu;
 90	struct vdec_h264_vsi vsi_ctx;
 91	struct mtk_h264_dec_slice_param h264_slice_param;
 92
 93	struct v4l2_h264_dpb_entry dpb[16];
 94};
 95
 96static int get_vdec_decode_parameters(struct vdec_h264_slice_inst *inst)
 97{
 98	const struct v4l2_ctrl_h264_decode_params *dec_params;
 99	const struct v4l2_ctrl_h264_sps *sps;
100	const struct v4l2_ctrl_h264_pps *pps;
101	const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
102	struct mtk_h264_dec_slice_param *slice_param = &inst->h264_slice_param;
103	struct v4l2_h264_reflist_builder reflist_builder;
104	struct v4l2_h264_reference v4l2_p0_reflist[V4L2_H264_REF_LIST_LEN];
105	struct v4l2_h264_reference v4l2_b0_reflist[V4L2_H264_REF_LIST_LEN];
106	struct v4l2_h264_reference v4l2_b1_reflist[V4L2_H264_REF_LIST_LEN];
107	u8 *p0_reflist = slice_param->decode_params.ref_pic_list_p0;
108	u8 *b0_reflist = slice_param->decode_params.ref_pic_list_b0;
109	u8 *b1_reflist = slice_param->decode_params.ref_pic_list_b1;
110
111	dec_params =
112		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
113	if (IS_ERR(dec_params))
114		return PTR_ERR(dec_params);
115
116	sps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SPS);
117	if (IS_ERR(sps))
118		return PTR_ERR(sps);
119
120	pps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_PPS);
121	if (IS_ERR(pps))
122		return PTR_ERR(pps);
123
124	scaling_matrix =
125		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SCALING_MATRIX);
126	if (IS_ERR(scaling_matrix))
127		return PTR_ERR(scaling_matrix);
128
129	mtk_vdec_h264_update_dpb(dec_params, inst->dpb);
130
131	mtk_vdec_h264_copy_sps_params(&slice_param->sps, sps);
132	mtk_vdec_h264_copy_pps_params(&slice_param->pps, pps);
133	mtk_vdec_h264_copy_scaling_matrix(&slice_param->scaling_matrix, scaling_matrix);
134	mtk_vdec_h264_copy_decode_params(&slice_param->decode_params,
135					 dec_params, inst->dpb);
136	mtk_vdec_h264_fill_dpb_info(inst->ctx, &slice_param->decode_params,
137				    slice_param->h264_dpb_info);
138
139	/* Build the reference lists */
140	v4l2_h264_init_reflist_builder(&reflist_builder, dec_params, sps,
141				       inst->dpb);
142	v4l2_h264_build_p_ref_list(&reflist_builder, v4l2_p0_reflist);
143	v4l2_h264_build_b_ref_lists(&reflist_builder, v4l2_b0_reflist,
144				    v4l2_b1_reflist);
145
146	/* Adapt the built lists to the firmware's expectations */
147	mtk_vdec_h264_get_ref_list(p0_reflist, v4l2_p0_reflist, reflist_builder.num_valid);
148	mtk_vdec_h264_get_ref_list(b0_reflist, v4l2_b0_reflist, reflist_builder.num_valid);
149	mtk_vdec_h264_get_ref_list(b1_reflist, v4l2_b1_reflist, reflist_builder.num_valid);
150
151	memcpy(&inst->vsi_ctx.h264_slice_params, slice_param,
152	       sizeof(inst->vsi_ctx.h264_slice_params));
153
154	return 0;
155}
156
157static int allocate_prediction_buf(struct vdec_h264_slice_inst *inst)
158{
159	int err;
160
161	inst->pred_buf.size = BUF_PREDICTION_SZ;
162	err = mtk_vcodec_mem_alloc(inst->ctx, &inst->pred_buf);
163	if (err) {
164		mtk_vdec_err(inst->ctx, "failed to allocate ppl buf");
165		return err;
166	}
167
168	inst->vsi_ctx.pred_buf_dma = inst->pred_buf.dma_addr;
169	return 0;
170}
171
172static void free_prediction_buf(struct vdec_h264_slice_inst *inst)
173{
174	struct mtk_vcodec_mem *mem = &inst->pred_buf;
175
176	inst->vsi_ctx.pred_buf_dma = 0;
177	if (mem->va)
178		mtk_vcodec_mem_free(inst->ctx, mem);
179}
180
181static int alloc_mv_buf(struct vdec_h264_slice_inst *inst,
182			struct vdec_pic_info *pic)
183{
184	int i;
185	int err;
186	struct mtk_vcodec_mem *mem = NULL;
187	unsigned int buf_sz = mtk_vdec_h264_get_mv_buf_size(pic->buf_w, pic->buf_h);
188
189	mtk_v4l2_vdec_dbg(3, inst->ctx, "size = 0x%x", buf_sz);
190	for (i = 0; i < H264_MAX_MV_NUM; i++) {
191		mem = &inst->mv_buf[i];
192		if (mem->va)
193			mtk_vcodec_mem_free(inst->ctx, mem);
194		mem->size = buf_sz;
195		err = mtk_vcodec_mem_alloc(inst->ctx, mem);
196		if (err) {
197			mtk_vdec_err(inst->ctx, "failed to allocate mv buf");
198			return err;
199		}
200		inst->vsi_ctx.mv_buf_dma[i] = mem->dma_addr;
201	}
202
203	return 0;
204}
205
206static void free_mv_buf(struct vdec_h264_slice_inst *inst)
207{
208	int i;
209	struct mtk_vcodec_mem *mem;
210
211	for (i = 0; i < H264_MAX_MV_NUM; i++) {
212		inst->vsi_ctx.mv_buf_dma[i] = 0;
213		mem = &inst->mv_buf[i];
214		if (mem->va)
215			mtk_vcodec_mem_free(inst->ctx, mem);
216	}
217}
218
219static void get_pic_info(struct vdec_h264_slice_inst *inst,
220			 struct vdec_pic_info *pic)
221{
222	struct mtk_vcodec_dec_ctx *ctx = inst->ctx;
223
224	ctx->picinfo.buf_w = ALIGN(ctx->picinfo.pic_w, VCODEC_DEC_ALIGNED_64);
225	ctx->picinfo.buf_h = ALIGN(ctx->picinfo.pic_h, VCODEC_DEC_ALIGNED_64);
226	ctx->picinfo.fb_sz[0] = ctx->picinfo.buf_w * ctx->picinfo.buf_h;
227	ctx->picinfo.fb_sz[1] = ctx->picinfo.fb_sz[0] >> 1;
228	inst->vsi_ctx.dec.cap_num_planes =
229		ctx->q_data[MTK_Q_DATA_DST].fmt->num_planes;
230
231	*pic = ctx->picinfo;
232	mtk_vdec_debug(inst->ctx, "pic(%d, %d), buf(%d, %d)",
233		       ctx->picinfo.pic_w, ctx->picinfo.pic_h,
234		       ctx->picinfo.buf_w, ctx->picinfo.buf_h);
235	mtk_vdec_debug(inst->ctx, "Y/C(%d, %d)", ctx->picinfo.fb_sz[0],
236		       ctx->picinfo.fb_sz[1]);
237
238	if (ctx->last_decoded_picinfo.pic_w != ctx->picinfo.pic_w ||
239	    ctx->last_decoded_picinfo.pic_h != ctx->picinfo.pic_h) {
240		inst->vsi_ctx.dec.resolution_changed = true;
241		if (ctx->last_decoded_picinfo.buf_w != ctx->picinfo.buf_w ||
242		    ctx->last_decoded_picinfo.buf_h != ctx->picinfo.buf_h)
243			inst->vsi_ctx.dec.realloc_mv_buf = true;
244
245		mtk_v4l2_vdec_dbg(1, inst->ctx, "ResChg: (%d %d) : old(%d, %d) -> new(%d, %d)",
246				  inst->vsi_ctx.dec.resolution_changed,
247				  inst->vsi_ctx.dec.realloc_mv_buf,
248				  ctx->last_decoded_picinfo.pic_w,
249				  ctx->last_decoded_picinfo.pic_h,
250				  ctx->picinfo.pic_w, ctx->picinfo.pic_h);
251	}
252}
253
254static void get_crop_info(struct vdec_h264_slice_inst *inst, struct v4l2_rect *cr)
255{
256	cr->left = inst->vsi_ctx.crop.left;
257	cr->top = inst->vsi_ctx.crop.top;
258	cr->width = inst->vsi_ctx.crop.width;
259	cr->height = inst->vsi_ctx.crop.height;
260
261	mtk_vdec_debug(inst->ctx, "l=%d, t=%d, w=%d, h=%d",
262		       cr->left, cr->top, cr->width, cr->height);
263}
264
265static void get_dpb_size(struct vdec_h264_slice_inst *inst, unsigned int *dpb_sz)
266{
267	*dpb_sz = inst->vsi_ctx.dec.dpb_sz;
268	mtk_vdec_debug(inst->ctx, "sz=%d", *dpb_sz);
269}
270
271static int vdec_h264_slice_init(struct mtk_vcodec_dec_ctx *ctx)
272{
273	struct vdec_h264_slice_inst *inst;
274	int err;
275
276	inst = kzalloc(sizeof(*inst), GFP_KERNEL);
277	if (!inst)
278		return -ENOMEM;
279
280	inst->ctx = ctx;
281
282	inst->vpu.id = SCP_IPI_VDEC_H264;
283	inst->vpu.ctx = ctx;
284
285	err = vpu_dec_init(&inst->vpu);
286	if (err) {
287		mtk_vdec_err(ctx, "vdec_h264 init err=%d", err);
288		goto error_free_inst;
289	}
290
291	memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
292	inst->vsi_ctx.dec.resolution_changed = true;
293	inst->vsi_ctx.dec.realloc_mv_buf = true;
294
295	err = allocate_prediction_buf(inst);
296	if (err)
297		goto error_deinit;
298
299	mtk_vdec_debug(ctx, "struct size = %zu,%zu,%zu,%zu\n",
300		       sizeof(struct mtk_h264_sps_param),
301		       sizeof(struct mtk_h264_pps_param),
302		       sizeof(struct mtk_h264_dec_slice_param),
303		       sizeof(struct mtk_h264_dpb_info));
304
305	mtk_vdec_debug(ctx, "H264 Instance >> %p", inst);
306
307	ctx->drv_handle = inst;
308	return 0;
309
310error_deinit:
311	vpu_dec_deinit(&inst->vpu);
312
313error_free_inst:
314	kfree(inst);
315	return err;
316}
317
318static void vdec_h264_slice_deinit(void *h_vdec)
319{
320	struct vdec_h264_slice_inst *inst = h_vdec;
321
322	vpu_dec_deinit(&inst->vpu);
323	free_prediction_buf(inst);
324	free_mv_buf(inst);
325
326	kfree(inst);
327}
328
329static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
330				  struct vdec_fb *unused, bool *res_chg)
331{
332	struct vdec_h264_slice_inst *inst = h_vdec;
333	const struct v4l2_ctrl_h264_decode_params *dec_params =
334		mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
335	struct vdec_vpu_inst *vpu = &inst->vpu;
336	struct mtk_video_dec_buf *src_buf_info;
337	struct mtk_video_dec_buf *dst_buf_info;
338	struct vdec_fb *fb;
339	u32 data[2];
340	u64 y_fb_dma;
341	u64 c_fb_dma;
342	int err;
343
344	inst->num_nalu++;
345	/* bs NULL means flush decoder */
346	if (!bs)
347		return vpu_dec_reset(vpu);
348
349	fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
350	if (!fb) {
351		mtk_vdec_err(inst->ctx, "fb buffer is NULL");
352		return -ENOMEM;
353	}
354
355	src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
356	dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
357
358	y_fb_dma = fb->base_y.dma_addr;
359	c_fb_dma = fb->base_c.dma_addr;
360
361	mtk_vdec_debug(inst->ctx, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
362		       inst->num_nalu, y_fb_dma, c_fb_dma, fb);
363
364	inst->vsi_ctx.dec.bs_dma = (uint64_t)bs->dma_addr;
365	inst->vsi_ctx.dec.y_fb_dma = y_fb_dma;
366	inst->vsi_ctx.dec.c_fb_dma = c_fb_dma;
367	inst->vsi_ctx.dec.vdec_fb_va = (u64)(uintptr_t)fb;
368
369	v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb,
370				   &dst_buf_info->m2m_buf.vb);
371	err = get_vdec_decode_parameters(inst);
372	if (err)
373		goto err_free_fb_out;
374
375	data[0] = bs->size;
376	/*
377	 * Reconstruct the first byte of the NAL unit, as the firmware requests
378	 * that information to be passed even though it is present in the stream
379	 * itself...
380	 */
381	data[1] = (dec_params->nal_ref_idc << 5) |
382		  ((dec_params->flags & V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC)
383			? 0x5 : 0x1);
384
385	*res_chg = inst->vsi_ctx.dec.resolution_changed;
386	if (*res_chg) {
387		mtk_vdec_debug(inst->ctx, "- resolution changed -");
388		if (inst->vsi_ctx.dec.realloc_mv_buf) {
389			err = alloc_mv_buf(inst, &inst->ctx->picinfo);
390			inst->vsi_ctx.dec.realloc_mv_buf = false;
391			if (err)
392				goto err_free_fb_out;
393		}
394		*res_chg = false;
395	}
396
397	memcpy(inst->vpu.vsi, &inst->vsi_ctx, sizeof(inst->vsi_ctx));
398	err = vpu_dec_start(vpu, data, 2);
399	if (err)
400		goto err_free_fb_out;
401
402	/* wait decoder done interrupt */
403	err = mtk_vcodec_wait_for_done_ctx(inst->ctx,
404					   MTK_INST_IRQ_RECEIVED,
405					   WAIT_INTR_TIMEOUT_MS, 0);
406	if (err)
407		goto err_free_fb_out;
408	vpu_dec_end(vpu);
409
410	memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
411	mtk_vdec_debug(inst->ctx, "\n - NALU[%d]", inst->num_nalu);
412	return 0;
413
414err_free_fb_out:
415	mtk_vdec_err(inst->ctx, "\n - NALU[%d] err=%d -\n", inst->num_nalu, err);
416	return err;
417}
418
419static int vdec_h264_slice_get_param(void *h_vdec, enum vdec_get_param_type type, void *out)
420{
421	struct vdec_h264_slice_inst *inst = h_vdec;
422
423	switch (type) {
424	case GET_PARAM_PIC_INFO:
425		get_pic_info(inst, out);
426		break;
427
428	case GET_PARAM_DPB_SIZE:
429		get_dpb_size(inst, out);
430		break;
431
432	case GET_PARAM_CROP_INFO:
433		get_crop_info(inst, out);
434		break;
435
436	default:
437		mtk_vdec_err(inst->ctx, "invalid get parameter type=%d", type);
438		return -EINVAL;
439	}
440
441	return 0;
442}
443
444const struct vdec_common_if vdec_h264_slice_if = {
445	.init		= vdec_h264_slice_init,
446	.decode		= vdec_h264_slice_decode,
447	.get_param	= vdec_h264_slice_get_param,
448	.deinit		= vdec_h264_slice_deinit,
449};