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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Cadence USBSS DRD Driver.
* Debug header file.
*
* Copyright (C) 2018-2019 Cadence.
*
* Author: Pawel Laszczak <pawell@cadence.com>
*/
#ifndef __LINUX_CDNS3_DEBUG
#define __LINUX_CDNS3_DEBUG
#include "core.h"
static inline char *cdns3_decode_usb_irq(char *str,
enum usb_device_speed speed,
u32 usb_ists)
{
int ret;
ret = sprintf(str, "IRQ %08x = ", usb_ists);
if (usb_ists & (USB_ISTS_CON2I | USB_ISTS_CONI)) {
ret += sprintf(str + ret, "Connection %s\n",
usb_speed_string(speed));
}
if (usb_ists & USB_ISTS_DIS2I || usb_ists & USB_ISTS_DISI)
ret += sprintf(str + ret, "Disconnection ");
if (usb_ists & USB_ISTS_L2ENTI)
ret += sprintf(str + ret, "suspended ");
if (usb_ists & USB_ISTS_L1ENTI)
ret += sprintf(str + ret, "L1 enter ");
if (usb_ists & USB_ISTS_L1EXTI)
ret += sprintf(str + ret, "L1 exit ");
if (usb_ists & USB_ISTS_L2ENTI)
ret += sprintf(str + ret, "L2 enter ");
if (usb_ists & USB_ISTS_L2EXTI)
ret += sprintf(str + ret, "L2 exit ");
if (usb_ists & USB_ISTS_U3EXTI)
ret += sprintf(str + ret, "U3 exit ");
if (usb_ists & USB_ISTS_UWRESI)
ret += sprintf(str + ret, "Warm Reset ");
if (usb_ists & USB_ISTS_UHRESI)
ret += sprintf(str + ret, "Hot Reset ");
if (usb_ists & USB_ISTS_U2RESI)
ret += sprintf(str + ret, "Reset");
return str;
}
static inline char *cdns3_decode_ep_irq(char *str,
u32 ep_sts,
const char *ep_name)
{
int ret;
ret = sprintf(str, "IRQ for %s: %08x ", ep_name, ep_sts);
if (ep_sts & EP_STS_SETUP)
ret += sprintf(str + ret, "SETUP ");
if (ep_sts & EP_STS_IOC)
ret += sprintf(str + ret, "IOC ");
if (ep_sts & EP_STS_ISP)
ret += sprintf(str + ret, "ISP ");
if (ep_sts & EP_STS_DESCMIS)
ret += sprintf(str + ret, "DESCMIS ");
if (ep_sts & EP_STS_STREAMR)
ret += sprintf(str + ret, "STREAMR ");
if (ep_sts & EP_STS_MD_EXIT)
ret += sprintf(str + ret, "MD_EXIT ");
if (ep_sts & EP_STS_TRBERR)
ret += sprintf(str + ret, "TRBERR ");
if (ep_sts & EP_STS_NRDY)
ret += sprintf(str + ret, "NRDY ");
if (ep_sts & EP_STS_PRIME)
ret += sprintf(str + ret, "PRIME ");
if (ep_sts & EP_STS_SIDERR)
ret += sprintf(str + ret, "SIDERRT ");
if (ep_sts & EP_STS_OUTSMM)
ret += sprintf(str + ret, "OUTSMM ");
if (ep_sts & EP_STS_ISOERR)
ret += sprintf(str + ret, "ISOERR ");
if (ep_sts & EP_STS_IOT)
ret += sprintf(str + ret, "IOT ");
return str;
}
static inline char *cdns3_decode_epx_irq(char *str,
char *ep_name,
u32 ep_sts)
{
return cdns3_decode_ep_irq(str, ep_sts, ep_name);
}
static inline char *cdns3_decode_ep0_irq(char *str,
int dir,
u32 ep_sts)
{
return cdns3_decode_ep_irq(str, ep_sts,
dir ? "ep0IN" : "ep0OUT");
}
/**
* Debug a transfer ring.
*
* Prints out all TRBs in the endpoint ring, even those after the Link TRB.
*.
*/
static inline char *cdns3_dbg_ring(struct cdns3_endpoint *priv_ep,
struct cdns3_trb *ring, char *str)
{
dma_addr_t addr = priv_ep->trb_pool_dma;
struct cdns3_trb *trb;
int trb_per_sector;
int ret = 0;
int i;
trb_per_sector = GET_TRBS_PER_SEGMENT(priv_ep->type);
trb = &priv_ep->trb_pool[priv_ep->dequeue];
ret += sprintf(str + ret, "\n\t\tRing contents for %s:", priv_ep->name);
ret += sprintf(str + ret,
"\n\t\tRing deq index: %d, trb: %p (virt), 0x%llx (dma)\n",
priv_ep->dequeue, trb,
(unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
trb = &priv_ep->trb_pool[priv_ep->enqueue];
ret += sprintf(str + ret,
"\t\tRing enq index: %d, trb: %p (virt), 0x%llx (dma)\n",
priv_ep->enqueue, trb,
(unsigned long long)cdns3_trb_virt_to_dma(priv_ep, trb));
ret += sprintf(str + ret,
"\t\tfree trbs: %d, CCS=%d, PCS=%d\n",
priv_ep->free_trbs, priv_ep->ccs, priv_ep->pcs);
if (trb_per_sector > TRBS_PER_SEGMENT)
trb_per_sector = TRBS_PER_SEGMENT;
if (trb_per_sector > TRBS_PER_SEGMENT) {
sprintf(str + ret, "\t\tTo big transfer ring %d\n",
trb_per_sector);
return str;
}
for (i = 0; i < trb_per_sector; ++i) {
trb = &ring[i];
ret += sprintf(str + ret,
"\t\t@%pad %08x %08x %08x\n", &addr,
le32_to_cpu(trb->buffer),
le32_to_cpu(trb->length),
le32_to_cpu(trb->control));
addr += sizeof(*trb);
}
return str;
}
#endif /*__LINUX_CDNS3_DEBUG*/
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