1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Cadence USBSS DRD Driver.
4 * Debug header file.
5 *
6 * Copyright (C) 2018-2019 Cadence.
7 *
8 * Author: Pawel Laszczak <pawell@cadence.com>
9 */
10 #ifndef __LINUX_CDNS3_DEBUG
11 #define __LINUX_CDNS3_DEBUG
12
13 #include "core.h"
14 #include "gadget.h"
15
cdns3_decode_usb_irq(char * str,enum usb_device_speed speed,u32 usb_ists)16 static inline char *cdns3_decode_usb_irq(char *str,
17 enum usb_device_speed speed,
18 u32 usb_ists)
19 {
20 int ret;
21
22 ret = sprintf(str, "IRQ %08x = ", usb_ists);
23
24 if (usb_ists & (USB_ISTS_CON2I | USB_ISTS_CONI)) {
25 ret += sprintf(str + ret, "Connection %s\n",
26 usb_speed_string(speed));
27 }
28 if (usb_ists & USB_ISTS_DIS2I || usb_ists & USB_ISTS_DISI)
29 ret += sprintf(str + ret, "Disconnection ");
30 if (usb_ists & USB_ISTS_L2ENTI)
31 ret += sprintf(str + ret, "suspended ");
32 if (usb_ists & USB_ISTS_L1ENTI)
33 ret += sprintf(str + ret, "L1 enter ");
34 if (usb_ists & USB_ISTS_L1EXTI)
35 ret += sprintf(str + ret, "L1 exit ");
36 if (usb_ists & USB_ISTS_L2ENTI)
37 ret += sprintf(str + ret, "L2 enter ");
38 if (usb_ists & USB_ISTS_L2EXTI)
39 ret += sprintf(str + ret, "L2 exit ");
40 if (usb_ists & USB_ISTS_U3EXTI)
41 ret += sprintf(str + ret, "U3 exit ");
42 if (usb_ists & USB_ISTS_UWRESI)
43 ret += sprintf(str + ret, "Warm Reset ");
44 if (usb_ists & USB_ISTS_UHRESI)
45 ret += sprintf(str + ret, "Hot Reset ");
46 if (usb_ists & USB_ISTS_U2RESI)
47 ret += sprintf(str + ret, "Reset");
48
49 return str;
50 }
51
cdns3_decode_ep_irq(char * str,u32 ep_sts,const char * ep_name)52 static inline char *cdns3_decode_ep_irq(char *str,
53 u32 ep_sts,
54 const char *ep_name)
55 {
56 int ret;
57
58 ret = sprintf(str, "IRQ for %s: %08x ", ep_name, ep_sts);
59
60 if (ep_sts & EP_STS_SETUP)
61 ret += sprintf(str + ret, "SETUP ");
62 if (ep_sts & EP_STS_IOC)
63 ret += sprintf(str + ret, "IOC ");
64 if (ep_sts & EP_STS_ISP)
65 ret += sprintf(str + ret, "ISP ");
66 if (ep_sts & EP_STS_DESCMIS)
67 ret += sprintf(str + ret, "DESCMIS ");
68 if (ep_sts & EP_STS_STREAMR)
69 ret += sprintf(str + ret, "STREAMR ");
70 if (ep_sts & EP_STS_MD_EXIT)
71 ret += sprintf(str + ret, "MD_EXIT ");
72 if (ep_sts & EP_STS_TRBERR)
73 ret += sprintf(str + ret, "TRBERR ");
74 if (ep_sts & EP_STS_NRDY)
75 ret += sprintf(str + ret, "NRDY ");
76 if (ep_sts & EP_STS_PRIME)
77 ret += sprintf(str + ret, "PRIME ");
78 if (ep_sts & EP_STS_SIDERR)
79 ret += sprintf(str + ret, "SIDERRT ");
80 if (ep_sts & EP_STS_OUTSMM)
81 ret += sprintf(str + ret, "OUTSMM ");
82 if (ep_sts & EP_STS_ISOERR)
83 ret += sprintf(str + ret, "ISOERR ");
84 if (ep_sts & EP_STS_IOT)
85 ret += sprintf(str + ret, "IOT ");
86
87 return str;
88 }
89
cdns3_decode_epx_irq(char * str,char * ep_name,u32 ep_sts)90 static inline char *cdns3_decode_epx_irq(char *str,
91 char *ep_name,
92 u32 ep_sts)
93 {
94 return cdns3_decode_ep_irq(str, ep_sts, ep_name);
95 }
96
cdns3_decode_ep0_irq(char * str,int dir,u32 ep_sts)97 static inline char *cdns3_decode_ep0_irq(char *str,
98 int dir,
99 u32 ep_sts)
100 {
101 return cdns3_decode_ep_irq(str, ep_sts,
102 dir ? "ep0IN" : "ep0OUT");
103 }
104
105 /**
106 * Debug a transfer ring.
107 *
108 * Prints out all TRBs in the endpoint ring, even those after the Link TRB.
109 *.
110 */
cdns3_dbg_ring(struct cdns3_endpoint * priv_ep,struct cdns3_trb * ring,char * str)111 static inline char *cdns3_dbg_ring(struct cdns3_endpoint *priv_ep,
112 struct cdns3_trb *ring, char *str)
113 {
114 dma_addr_t addr = priv_ep->trb_pool_dma;
115 struct cdns3_trb *trb;
116 int trb_per_sector;
117 int ret = 0;
118 int i;
119
120 trb_per_sector = GET_TRBS_PER_SEGMENT(priv_ep->type);
121
122 trb = &priv_ep->trb_pool[priv_ep->dequeue];
123 ret += sprintf(str + ret, "\n\t\tRing contents for %s:", priv_ep->name);
124
125 ret += sprintf(str + ret,
126 "\n\t\tRing deq index: %d, trb: %p (virt), 0x%llx (dma)\n",
127 priv_ep->dequeue, trb,
128 (unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
129
130 trb = &priv_ep->trb_pool[priv_ep->enqueue];
131 ret += sprintf(str + ret,
132 "\t\tRing enq index: %d, trb: %p (virt), 0x%llx (dma)\n",
133 priv_ep->enqueue, trb,
134 (unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
135
136 ret += sprintf(str + ret,
137 "\t\tfree trbs: %d, CCS=%d, PCS=%d\n",
138 priv_ep->free_trbs, priv_ep->ccs, priv_ep->pcs);
139
140 if (trb_per_sector > TRBS_PER_SEGMENT)
141 trb_per_sector = TRBS_PER_SEGMENT;
142
143 if (trb_per_sector > TRBS_PER_SEGMENT) {
144 sprintf(str + ret, "\t\tTo big transfer ring %d\n",
145 trb_per_sector);
146 return str;
147 }
148
149 for (i = 0; i < trb_per_sector; ++i) {
150 trb = &ring[i];
151 ret += sprintf(str + ret,
152 "\t\t@%pad %08x %08x %08x\n", &addr,
153 le32_to_cpu(trb->buffer),
154 le32_to_cpu(trb->length),
155 le32_to_cpu(trb->control));
156 addr += sizeof(*trb);
157 }
158
159 return str;
160 }
161
162 #endif /*__LINUX_CDNS3_DEBUG*/
163