di: TL1 enable lmv_lock_win_en cause crash [1/1]

PD#SWPL-4999

Problem:
use vmalloc in interrupt context

Solution:
move di_map to cma allocate function(kernel thread)

Verify:
verified by t962x2_x301

Change-Id: I8cf8d9caf9703ba039b32da98d2382a4c875de30
Signed-off-by: zhiwei.yuan <zhiwei.yuan@amlogic.com>
Signed-off-by: Luan Yuan <luan.yuan@amlogic.com>

drivers/amlogic/media/deinterlace/deinterlace.c

@@ -1878,6 +1878,7 @@ static unsigned int di_cma_alloc(struct di_dev_s *devp)
 	unsigned int start_time, end_time, delta_time;
 	struct di_buf_s *buf_p = NULL;
 	int itmp, alloc_cnt = 0;
+	u8 *tmp;
 
 	start_time = jiffies_to_msecs(jiffies);
 	queue_for_each_entry(buf_p, ptmp, QUEUE_LOCAL_FREE, list) {
@@ -1923,6 +1924,18 @@ static unsigned int di_cma_alloc(struct di_dev_s *devp)
 					di_pre_stru.mtn_size +
 					di_pre_stru.count_size +
 					di_pre_stru.mv_size;
+					tmp = di_vmap(buf_p->mcinfo_adr,
+						di_pre_stru.mcinfo_size,
+						&buf_p->bflg_vmap);
+
+					if (buf_p->bflg_vmap == true)
+						buf_p->mcinfo_vaddr =
+							(unsigned short *)tmp;
+					else {
+						buf_p->mcinfo_vaddr = NULL;
+						pr_err("DI: %s vmap fail\n",
+							__func__);
+					}
 			}
 		}
 	}
@@ -1987,6 +2000,12 @@ static void di_cma_release(struct di_dev_s *devp)
 		}
 		if ((ii >= USED_LOCAL_BUF_MAX) &&
 			(buf_p->pages != NULL)) {
+
+			if (buf_p->bflg_vmap == true) {
+				di_unmap_phyaddr((u8 *)buf_p->mcinfo_vaddr);
+				buf_p->bflg_vmap = false;
+			}
+
 			if (dma_release_from_contiguous(&(devp->pdev->dev),
 					buf_p->pages,
 					devp->buffer_size >> PAGE_SHIFT)) {
@@ -2049,6 +2068,7 @@ static int di_init_buf(int width, int height, unsigned char prog_flag)
 	unsigned int mv_canvas_width = width, canvas_align_width = 32;
 	unsigned long di_post_mem = 0, nrds_mem = 0;
 	struct di_buf_s *keep_buf = di_post_stru.keep_buf;
+	u8 *tmp;
 
 	if (cpu_after_eq(MESON_CPU_MAJOR_ID_G12A))
 		canvas_align_width = 64;
@@ -2182,6 +2202,18 @@ static int di_init_buf(int width, int height, unsigned char prog_flag)
 						de_devp->mem_start +
 						di_buf_size * i + nr_size +
 						mtn_size + count_size + mv_size;
+					tmp = di_vmap(di_buf->mcinfo_adr,
+						di_pre_stru.mcinfo_size,
+						&di_buf->bflg_vmap);
+
+					if (di_buf->bflg_vmap == true)
+						di_buf->mcinfo_vaddr =
+							(unsigned short *)tmp;
+					else {
+						di_buf->mcinfo_vaddr = NULL;
+						pr_err("DI: %s vmap fail\n",
+							__func__);
+					}
 				}
 				di_buf->canvas_config_flag = 2;
 			}
@@ -4354,8 +4386,7 @@ static irqreturn_t de_irq(int irq, void *dev_instance)
 				is_meson_txhd_cpu())
 				mc_pre_mv_irq();
 			calc_lmv_base_mcinfo((di_pre_stru.cur_height>>1),
-				di_pre_stru.di_wr_buf->mcinfo_adr,
-				di_pre_stru.mcinfo_size);
+				di_pre_stru.di_wr_buf->mcinfo_vaddr);
 		}
 		nr_process_in_irq();
 		if ((data32&0x200) && de_devp->nrds_enable)

drivers/amlogic/media/deinterlace/deinterlace.h

@@ -117,6 +117,8 @@ struct di_buf_s {
 	int cnt_canvas_idx;
 	unsigned long mcinfo_adr;
 	int mcinfo_canvas_idx;
+	unsigned short *mcinfo_vaddr;
+	bool bflg_vmap;
 	unsigned long mcvec_adr;
 	int mcvec_canvas_idx;
 	struct mcinfo_pre_s {

drivers/amlogic/media/deinterlace/deinterlace_hw.c

@@ -314,16 +314,14 @@ static struct mcinfo_lmv_s lines_mv[540];
 static short offset_lmv = 100;
 module_param_named(offset_lmv, offset_lmv, short, 0644);
 
-void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned long mcinfo_adr,
-					unsigned int mcinfo_size)
+void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned short *mcinfo_vadr)
 {
 	unsigned short i, top_str, bot_str, top_end, bot_end, j = 0;
-	unsigned short *mcinfo_vadr = NULL, lck_num;
+	unsigned short lck_num;
 	unsigned short flg_m1 = 0, flg_i = 0, nLmvLckSt = 0;
 	unsigned short lmv_lckstext[3] = {0, 0, 0}, nLmvLckEd;
 	unsigned short lmv_lckedext[3] = {0, 0, 0}, nLmvLckNum;
-	bool bflg_vmap = false;
-	u8 *tmp;
+	//bool bflg_vmap = false;
 
 	//mcinfo_vadr = (unsigned short *)phys_to_virt(mcinfo_adr);
 
@@ -335,12 +333,11 @@ void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned long mcinfo_adr,
 		return;
 	}
 
-	tmp = di_vmap(mcinfo_adr, mcinfo_size, &bflg_vmap);
-	if (tmp == NULL) {
+	//tmp = di_vmap(mcinfo_adr, mcinfo_size, &bflg_vmap);
+	if (mcinfo_vadr == NULL) {
 		di_print("err:di_vmap failed\n");
 		return;
 	}
-	mcinfo_vadr = (unsigned short *)tmp;
 
 	for (i = 0; i < (vf_height>>1); i++) {
 		lmvs_init(&lines_mv[i], *(mcinfo_vadr+i));
@@ -355,8 +352,8 @@ void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned long mcinfo_adr,
 				pr_info("\n");
 		}
 	}
-	if (bflg_vmap)
-		di_unmap_phyaddr(tmp);
+	//if (bflg_vmap)
+		//di_unmap_phyaddr(tmp);
 
 	pr_mcinfo_cnt ? pr_mcinfo_cnt-- : (pr_mcinfo_cnt = 0);
 	top_str = 0;

drivers/amlogic/media/deinterlace/deinterlace_hw.h

@@ -165,8 +165,7 @@ void enable_di_post_mif(enum gate_mode_e mode);
 void di_hw_uninit(void);
 void combing_pd22_window_config(unsigned int width, unsigned int height);
 void calc_lmv_init(void);
-void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned long mcinfo_adr,
-						unsigned int mcinfo_size);
+void calc_lmv_base_mcinfo(unsigned int vf_height, unsigned short *mcinfo_vadr);
 void init_field_mode(unsigned short height);
 void film_mode_win_config(unsigned int width, unsigned int height);
 void pulldown_vof_win_config(struct pulldown_detected_s *wins);