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From 502af2ba683831fb4c05bd887374053d17376c87 Mon Sep 17 00:00:00 2001
From: P33M <p33m@github.com>
Date: Fri, 21 Sep 2018 14:05:09 +0100
Subject: [PATCH 420/454] dwc_otg: fiq_fsm: fix incorrect DMA register offset
calculation
Rationalise the offset and update all call sites.
Fixes https://github.com/raspberrypi/linux/issues/2408
---
drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c | 8 ++++----
drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
+++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
@@ -250,7 +250,7 @@ static int notrace fiq_increment_dma_buf
BUG();
hcdma.d32 = (dma_addr_t) &blob->channel[n].index[i].buf[0];
- FIQ_WRITE(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+ FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
st->channel[n].dma_info.index = i;
return 0;
}
@@ -302,7 +302,7 @@ static int notrace fiq_iso_out_advance(s
/* New DMA address - address of bounce buffer referred to in index */
hcdma.d32 = (uint32_t) &blob->channel[n].index[i].buf[0];
- //hcdma.d32 = FIQ_READ(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n));
+ //hcdma.d32 = FIQ_READ(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA);
//hcdma.d32 += st->channel[n].dma_info.slot_len[i];
fiq_print(FIQDBG_INT, st, "LAST: %01d ", last);
fiq_print(FIQDBG_INT, st, "LEN: %03d", st->channel[n].dma_info.slot_len[i]);
@@ -317,7 +317,7 @@ static int notrace fiq_iso_out_advance(s
st->channel[n].dma_info.index++;
FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCSPLT, hcsplt.d32);
FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HCTSIZ, hctsiz.d32);
- FIQ_WRITE(st->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+ FIQ_WRITE(st->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
return last;
}
@@ -564,7 +564,7 @@ static int notrace noinline fiq_fsm_upda
/* grab the next DMA address offset from the array */
hcdma.d32 = st->hcdma_copy.d32 + st->hs_isoc_info.iso_desc[st->hs_isoc_info.index].offset;
- FIQ_WRITE(state->dwc_regs_base + HC_DMA + (HC_OFFSET * n), hcdma.d32);
+ FIQ_WRITE(state->dwc_regs_base + HC_START + (HC_OFFSET * n) + HC_DMA, hcdma.d32);
/* We need to set multi_count. This is a bit tricky - has to be set per-transaction as
* the core needs to be told to send the correct number. Caution: for IN transfers,
--- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
+++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.h
@@ -94,7 +94,7 @@ do { \
#define HC_START 0x500
#define HC_OFFSET 0x020
-#define HC_DMA 0x514
+#define HC_DMA 0x14
#define HCCHAR 0x00
#define HCSPLT 0x04
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