From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/usb/early/xhci-dbc.c | 28 +++++++++++-----------------
1 files changed, 11 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/usb/early/xhci-dbc.c b/kernel/drivers/usb/early/xhci-dbc.c
index 97885eb..6c04341 100644
--- a/kernel/drivers/usb/early/xhci-dbc.c
+++ b/kernel/drivers/usb/early/xhci-dbc.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
-/**
+/*
* xhci-dbc.c - xHCI debug capability early driver
*
* Copyright (C) 2016 Intel Corporation
@@ -12,16 +12,16 @@
#include <linux/console.h>
#include <linux/pci_regs.h>
#include <linux/pci_ids.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/io.h>
#include <asm/pci-direct.h>
#include <asm/fixmap.h>
#include <linux/bcd.h>
#include <linux/export.h>
-#include <linux/version.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/usb/xhci-dbgp.h>
#include "../host/xhci.h"
#include "xhci-dbc.h"
@@ -94,7 +94,7 @@
{
void *virt;
- virt = alloc_bootmem_pages_nopanic(PAGE_SIZE);
+ virt = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
if (!virt)
return NULL;
@@ -135,6 +135,7 @@
{
u32 result;
+ /* Can not use readl_poll_timeout_atomic() for early boot things */
do {
result = readl(ptr);
result &= mask;
@@ -191,7 +192,7 @@
if (!seg)
return;
- free_bootmem(seg->dma, PAGE_SIZE);
+ memblock_free(seg->dma, PAGE_SIZE);
ring->segment = NULL;
}
@@ -533,8 +534,6 @@
xdbc_mem_init();
- mmiowb();
-
ret = xdbc_start();
if (ret < 0)
goto reset_out;
@@ -586,8 +585,6 @@
return ret;
xdbc_mem_init();
-
- mmiowb();
ret = xdbc_start();
if (ret < 0) {
@@ -675,10 +672,10 @@
xdbc_free_ring(&xdbc.in_ring);
if (xdbc.table_dma)
- free_bootmem(xdbc.table_dma, PAGE_SIZE);
+ memblock_free(xdbc.table_dma, PAGE_SIZE);
if (xdbc.out_dma)
- free_bootmem(xdbc.out_dma, PAGE_SIZE);
+ memblock_free(xdbc.out_dma, PAGE_SIZE);
xdbc.table_base = NULL;
xdbc.out_buf = NULL;
@@ -717,17 +714,14 @@
static void xdbc_handle_tx_event(struct xdbc_trb *evt_trb)
{
- size_t remain_length;
u32 comp_code;
int ep_id;
comp_code = GET_COMP_CODE(le32_to_cpu(evt_trb->field[2]));
- remain_length = EVENT_TRB_LEN(le32_to_cpu(evt_trb->field[2]));
ep_id = TRB_TO_EP_ID(le32_to_cpu(evt_trb->field[3]));
switch (comp_code) {
case COMP_SUCCESS:
- remain_length = 0;
case COMP_SHORT_PACKET:
break;
case COMP_TRB_ERROR:
@@ -978,7 +972,7 @@
goto free_and_quit;
}
- base = ioremap_nocache(xdbc.xhci_start, xdbc.xhci_length);
+ base = ioremap(xdbc.xhci_start, xdbc.xhci_length);
if (!base) {
xdbc_trace("failed to remap the io address\n");
ret = -ENOMEM;
@@ -1000,8 +994,8 @@
xdbc_free_ring(&xdbc.evt_ring);
xdbc_free_ring(&xdbc.out_ring);
xdbc_free_ring(&xdbc.in_ring);
- free_bootmem(xdbc.table_dma, PAGE_SIZE);
- free_bootmem(xdbc.out_dma, PAGE_SIZE);
+ memblock_free(xdbc.table_dma, PAGE_SIZE);
+ memblock_free(xdbc.out_dma, PAGE_SIZE);
writel(0, &xdbc.xdbc_reg->control);
early_iounmap(xdbc.xhci_base, xdbc.xhci_length);
--
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