diff options
Diffstat (limited to 'drivers/usb/gadget/udc/cdns2/cdns2-debug.h')
| -rw-r--r-- | drivers/usb/gadget/udc/cdns2/cdns2-debug.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-debug.h b/drivers/usb/gadget/udc/cdns2/cdns2-debug.h new file mode 100644 index 000000000000..be9ae0d28a40 --- /dev/null +++ b/drivers/usb/gadget/udc/cdns2/cdns2-debug.h @@ -0,0 +1,203 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Cadence USBHS-DEV Driver. + * Debug header file. + * + * Copyright (C) 2023 Cadence. + * + * Author: Pawel Laszczak <pawell@cadence.com> + */ + +#ifndef __LINUX_CDNS2_DEBUG +#define __LINUX_CDNS2_DEBUG + +static inline const char *cdns2_decode_usb_irq(char *str, size_t size, + u8 usb_irq, u8 ext_irq) +{ + int ret; + + ret = snprintf(str, size, "usbirq: 0x%02x - ", usb_irq); + + if (usb_irq & USBIRQ_SOF) + ret += snprintf(str + ret, size - ret, "SOF "); + if (usb_irq & USBIRQ_SUTOK) + ret += snprintf(str + ret, size - ret, "SUTOK "); + if (usb_irq & USBIRQ_SUDAV) + ret += snprintf(str + ret, size - ret, "SETUP "); + if (usb_irq & USBIRQ_SUSPEND) + ret += snprintf(str + ret, size - ret, "Suspend "); + if (usb_irq & USBIRQ_URESET) + ret += snprintf(str + ret, size - ret, "Reset "); + if (usb_irq & USBIRQ_HSPEED) + ret += snprintf(str + ret, size - ret, "HS "); + if (usb_irq & USBIRQ_LPM) + ret += snprintf(str + ret, size - ret, "LPM "); + + ret += snprintf(str + ret, size - ret, ", EXT: 0x%02x - ", ext_irq); + + if (ext_irq & EXTIRQ_WAKEUP) + ret += snprintf(str + ret, size - ret, "Wakeup "); + if (ext_irq & EXTIRQ_VBUSFAULT_FALL) + ret += snprintf(str + ret, size - ret, "VBUS_FALL "); + if (ext_irq & EXTIRQ_VBUSFAULT_RISE) + ret += snprintf(str + ret, size - ret, "VBUS_RISE "); + + if (ret >= size) + pr_info("CDNS2: buffer overflowed.\n"); + + return str; +} + +static inline const char *cdns2_decode_dma_irq(char *str, size_t size, + u32 ep_ists, u32 ep_sts, + const char *ep_name) +{ + int ret; + + ret = snprintf(str, size, "ISTS: %08x, %s: %08x ", + ep_ists, ep_name, ep_sts); + + if (ep_sts & DMA_EP_STS_IOC) + ret += snprintf(str + ret, size - ret, "IOC "); + if (ep_sts & DMA_EP_STS_ISP) + ret += snprintf(str + ret, size - ret, "ISP "); + if (ep_sts & DMA_EP_STS_DESCMIS) + ret += snprintf(str + ret, size - ret, "DESCMIS "); + if (ep_sts & DMA_EP_STS_TRBERR) + ret += snprintf(str + ret, size - ret, "TRBERR "); + if (ep_sts & DMA_EP_STS_OUTSMM) + ret += snprintf(str + ret, size - ret, "OUTSMM "); + if (ep_sts & DMA_EP_STS_ISOERR) + ret += snprintf(str + ret, size - ret, "ISOERR "); + if (ep_sts & DMA_EP_STS_DBUSY) + ret += snprintf(str + ret, size - ret, "DBUSY "); + if (DMA_EP_STS_CCS(ep_sts)) + ret += snprintf(str + ret, size - ret, "CCS "); + + if (ret >= size) + pr_info("CDNS2: buffer overflowed.\n"); + + return str; +} + +static inline const char *cdns2_decode_epx_irq(char *str, size_t size, + char *ep_name, u32 ep_ists, + u32 ep_sts) +{ + return cdns2_decode_dma_irq(str, size, ep_ists, ep_sts, ep_name); +} + +static inline const char *cdns2_decode_ep0_irq(char *str, size_t size, + u32 ep_ists, u32 ep_sts, + int dir) +{ + return cdns2_decode_dma_irq(str, size, ep_ists, ep_sts, + dir ? "ep0IN" : "ep0OUT"); +} + +static inline const char *cdns2_raw_ring(struct cdns2_endpoint *pep, + struct cdns2_trb *trbs, + char *str, size_t size) +{ + struct cdns2_ring *ring = &pep->ring; + struct cdns2_trb *trb; + dma_addr_t dma; + int ret; + int i; + + ret = snprintf(str, size, "\n\t\tTR for %s:", pep->name); + + trb = &trbs[ring->dequeue]; + dma = cdns2_trb_virt_to_dma(pep, trb); + ret += snprintf(str + ret, size - ret, + "\n\t\tRing deq index: %d, trb: V=%p, P=0x%pad\n", + ring->dequeue, trb, &dma); + + trb = &trbs[ring->enqueue]; + dma = cdns2_trb_virt_to_dma(pep, trb); + ret += snprintf(str + ret, size - ret, + "\t\tRing enq index: %d, trb: V=%p, P=0x%pad\n", + ring->enqueue, trb, &dma); + + ret += snprintf(str + ret, size - ret, + "\t\tfree trbs: %d, CCS=%d, PCS=%d\n", + ring->free_trbs, ring->ccs, ring->pcs); + + if (TRBS_PER_SEGMENT > 40) { + ret += snprintf(str + ret, size - ret, + "\t\tTransfer ring %d too big\n", TRBS_PER_SEGMENT); + return str; + } + + dma = ring->dma; + for (i = 0; i < TRBS_PER_SEGMENT; ++i) { + trb = &trbs[i]; + ret += snprintf(str + ret, size - ret, + "\t\t@%pad %08x %08x %08x\n", &dma, + le32_to_cpu(trb->buffer), + le32_to_cpu(trb->length), + le32_to_cpu(trb->control)); + dma += sizeof(*trb); + } + + if (ret >= size) + pr_info("CDNS2: buffer overflowed.\n"); + + return str; +} + +static inline const char *cdns2_trb_type_string(u8 type) +{ + switch (type) { + case TRB_NORMAL: + return "Normal"; + case TRB_LINK: + return "Link"; + default: + return "UNKNOWN"; + } +} + +static inline const char *cdns2_decode_trb(char *str, size_t size, u32 flags, + u32 length, u32 buffer) +{ + int type = TRB_FIELD_TO_TYPE(flags); + int ret; + + switch (type) { + case TRB_LINK: + ret = snprintf(str, size, + "LINK %08x type '%s' flags %c:%c:%c%c:%c", + buffer, cdns2_trb_type_string(type), + flags & TRB_CYCLE ? 'C' : 'c', + flags & TRB_TOGGLE ? 'T' : 't', + flags & TRB_CHAIN ? 'C' : 'c', + flags & TRB_CHAIN ? 'H' : 'h', + flags & TRB_IOC ? 'I' : 'i'); + break; + case TRB_NORMAL: + ret = snprintf(str, size, + "type: '%s', Buffer: %08x, length: %ld, burst len: %ld, " + "flags %c:%c:%c%c:%c", + cdns2_trb_type_string(type), + buffer, TRB_LEN(length), + TRB_FIELD_TO_BURST(length), + flags & TRB_CYCLE ? 'C' : 'c', + flags & TRB_ISP ? 'I' : 'i', + flags & TRB_CHAIN ? 'C' : 'c', + flags & TRB_CHAIN ? 'H' : 'h', + flags & TRB_IOC ? 'I' : 'i'); + break; + default: + ret = snprintf(str, size, "type '%s' -> raw %08x %08x %08x", + cdns2_trb_type_string(type), + buffer, length, flags); + } + + if (ret >= size) + pr_info("CDNS2: buffer overflowed.\n"); + + return str; +} + +#endif /*__LINUX_CDNS2_DEBUG*/ |