1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * bdc_dbg.c - BRCM BDC USB3.0 device controller debug functions
4  *
5  * Copyright (C) 2014 Broadcom Corporation
6  *
7  * Author: Ashwini Pahuja
8  */
9 
10 #include "bdc.h"
11 #include "bdc_dbg.h"
12 
bdc_dbg_regs(struct bdc * bdc)13 void bdc_dbg_regs(struct bdc *bdc)
14 {
15 	u32 temp;
16 
17 	dev_vdbg(bdc->dev, "bdc->regs:%p\n", bdc->regs);
18 	temp = bdc_readl(bdc->regs, BDC_BDCCFG0);
19 	dev_vdbg(bdc->dev, "bdccfg0:0x%08x\n", temp);
20 	temp = bdc_readl(bdc->regs, BDC_BDCCFG1);
21 	dev_vdbg(bdc->dev, "bdccfg1:0x%08x\n", temp);
22 	temp = bdc_readl(bdc->regs, BDC_BDCCAP0);
23 	dev_vdbg(bdc->dev, "bdccap0:0x%08x\n", temp);
24 	temp = bdc_readl(bdc->regs, BDC_BDCCAP1);
25 	dev_vdbg(bdc->dev, "bdccap1:0x%08x\n", temp);
26 	temp = bdc_readl(bdc->regs, BDC_USPC);
27 	dev_vdbg(bdc->dev, "uspc:0x%08x\n", temp);
28 	temp = bdc_readl(bdc->regs, BDC_DVCSA);
29 	dev_vdbg(bdc->dev, "dvcsa:0x%08x\n", temp);
30 	temp = bdc_readl(bdc->regs, BDC_DVCSB);
31 	dev_vdbg(bdc->dev, "dvcsb:0x%x08\n", temp);
32 }
33 
bdc_dump_epsts(struct bdc * bdc)34 void bdc_dump_epsts(struct bdc *bdc)
35 {
36 	u32 temp;
37 
38 	temp = bdc_readl(bdc->regs, BDC_EPSTS0);
39 	dev_vdbg(bdc->dev, "BDC_EPSTS0:0x%08x\n", temp);
40 
41 	temp = bdc_readl(bdc->regs, BDC_EPSTS1);
42 	dev_vdbg(bdc->dev, "BDC_EPSTS1:0x%x\n", temp);
43 
44 	temp = bdc_readl(bdc->regs, BDC_EPSTS2);
45 	dev_vdbg(bdc->dev, "BDC_EPSTS2:0x%08x\n", temp);
46 
47 	temp = bdc_readl(bdc->regs, BDC_EPSTS3);
48 	dev_vdbg(bdc->dev, "BDC_EPSTS3:0x%08x\n", temp);
49 
50 	temp = bdc_readl(bdc->regs, BDC_EPSTS4);
51 	dev_vdbg(bdc->dev, "BDC_EPSTS4:0x%08x\n", temp);
52 
53 	temp = bdc_readl(bdc->regs, BDC_EPSTS5);
54 	dev_vdbg(bdc->dev, "BDC_EPSTS5:0x%08x\n", temp);
55 
56 	temp = bdc_readl(bdc->regs, BDC_EPSTS6);
57 	dev_vdbg(bdc->dev, "BDC_EPSTS6:0x%08x\n", temp);
58 
59 	temp = bdc_readl(bdc->regs, BDC_EPSTS7);
60 	dev_vdbg(bdc->dev, "BDC_EPSTS7:0x%08x\n", temp);
61 }
62 
bdc_dbg_srr(struct bdc * bdc,u32 srr_num)63 void bdc_dbg_srr(struct bdc *bdc, u32 srr_num)
64 {
65 	struct bdc_sr *sr;
66 	dma_addr_t addr;
67 	int i;
68 
69 	sr = bdc->srr.sr_bds;
70 	addr = bdc->srr.dma_addr;
71 	dev_vdbg(bdc->dev, "%s sr:%p dqp_index:%d\n", __func__,
72 						sr, bdc->srr.dqp_index);
73 	for (i = 0; i < NUM_SR_ENTRIES; i++) {
74 		sr = &bdc->srr.sr_bds[i];
75 		dev_vdbg(bdc->dev, "%llx %08x %08x %08x %08x\n",
76 					(unsigned long long)addr,
77 					le32_to_cpu(sr->offset[0]),
78 					le32_to_cpu(sr->offset[1]),
79 					le32_to_cpu(sr->offset[2]),
80 					le32_to_cpu(sr->offset[3]));
81 		addr += sizeof(*sr);
82 	}
83 }
84 
bdc_dbg_bd_list(struct bdc * bdc,struct bdc_ep * ep)85 void bdc_dbg_bd_list(struct bdc *bdc, struct bdc_ep *ep)
86 {
87 	struct bd_list *bd_list = &ep->bd_list;
88 	struct bd_table *bd_table;
89 	struct bdc_bd *bd;
90 	int tbi, bdi, gbdi;
91 	dma_addr_t dma;
92 
93 	gbdi = 0;
94 	dev_vdbg(bdc->dev,
95 		"Dump bd list for %s epnum:%d\n",
96 		ep->name, ep->ep_num);
97 
98 	dev_vdbg(bdc->dev,
99 		"tabs:%d max_bdi:%d eqp_bdi:%d hwd_bdi:%d num_bds_table:%d\n",
100 		bd_list->num_tabs, bd_list->max_bdi, bd_list->eqp_bdi,
101 		bd_list->hwd_bdi, bd_list->num_bds_table);
102 
103 	for (tbi = 0; tbi < bd_list->num_tabs; tbi++) {
104 		bd_table = bd_list->bd_table_array[tbi];
105 		for (bdi = 0; bdi < bd_list->num_bds_table; bdi++) {
106 			bd =  bd_table->start_bd + bdi;
107 			dma = bd_table->dma + (sizeof(struct bdc_bd) * bdi);
108 			dev_vdbg(bdc->dev,
109 				"tbi:%2d bdi:%2d gbdi:%2d virt:%p phys:%llx %08x %08x %08x %08x\n",
110 				tbi, bdi, gbdi++, bd, (unsigned long long)dma,
111 				le32_to_cpu(bd->offset[0]),
112 				le32_to_cpu(bd->offset[1]),
113 				le32_to_cpu(bd->offset[2]),
114 				le32_to_cpu(bd->offset[3]));
115 		}
116 		dev_vdbg(bdc->dev, "\n\n");
117 	}
118 }
119