From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/crypto/ccp/ccp-dev-v5.c | 47 +++++++++++++++++++++++++----------------------
1 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/kernel/drivers/crypto/ccp/ccp-dev-v5.c b/kernel/drivers/crypto/ccp/ccp-dev-v5.c
index 44a4d27..7838f63 100644
--- a/kernel/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/kernel/drivers/crypto/ccp/ccp-dev-v5.c
@@ -1,20 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* AMD Cryptographic Coprocessor (CCP) driver
*
- * Copyright (C) 2016,2017 Advanced Micro Devices, Inc.
+ * Copyright (C) 2016,2019 Advanced Micro Devices, Inc.
*
* Author: Gary R Hook <gary.hook@amd.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
-#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/pci.h>
#include <linux/kthread.h>
-#include <linux/debugfs.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/compiler.h>
@@ -227,8 +221,8 @@
static int ccp5_do_cmd(struct ccp5_desc *desc,
struct ccp_cmd_queue *cmd_q)
{
- u32 *mP;
- __le32 *dP;
+ __le32 *mP;
+ u32 *dP;
u32 tail;
int i;
int ret = 0;
@@ -241,8 +235,8 @@
}
mutex_lock(&cmd_q->q_mutex);
- mP = (u32 *) &cmd_q->qbase[cmd_q->qidx];
- dP = (__le32 *) desc;
+ mP = (__le32 *)&cmd_q->qbase[cmd_q->qidx];
+ dP = (u32 *)desc;
for (i = 0; i < 8; i++)
mP[i] = cpu_to_le32(dP[i]); /* handle endianness */
@@ -795,8 +789,19 @@
/* Find available queues */
qmr = ioread32(ccp->io_regs + Q_MASK_REG);
- for (i = 0; i < MAX_HW_QUEUES; i++) {
+ /*
+ * Check for a access to the registers. If this read returns
+ * 0xffffffff, it's likely that the system is running a broken
+ * BIOS which disallows access to the device. Stop here and fail
+ * the initialization (but not the load, as the PSP could get
+ * properly initialized).
+ */
+ if (qmr == 0xffffffff) {
+ dev_notice(dev, "ccp: unable to access the device: you might be running a broken BIOS.\n");
+ return 1;
+ }
+ for (i = 0; (i < MAX_HW_QUEUES) && (ccp->cmd_q_count < ccp->max_q_count); i++) {
if (!(qmr & (1 << i)))
continue;
@@ -809,6 +814,7 @@
if (!dma_pool) {
dev_err(dev, "unable to allocate dma pool\n");
ret = -ENOMEM;
+ goto e_pool;
}
cmd_q = &ccp->cmd_q[ccp->cmd_q_count];
@@ -822,7 +828,7 @@
/* Page alignment satisfies our needs for N <= 128 */
BUILD_BUG_ON(COMMANDS_PER_QUEUE > 128);
cmd_q->qsize = Q_SIZE(Q_DESC_SIZE);
- cmd_q->qbase = dma_zalloc_coherent(dev, cmd_q->qsize,
+ cmd_q->qbase = dmam_alloc_coherent(dev, cmd_q->qsize,
&cmd_q->qbase_dma,
GFP_KERNEL);
if (!cmd_q->qbase) {
@@ -860,7 +866,7 @@
if (ccp->cmd_q_count == 0) {
dev_notice(dev, "no command queues available\n");
- ret = -EIO;
+ ret = 1;
goto e_pool;
}
@@ -973,8 +979,10 @@
if (ret)
goto e_hwrng;
+#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS
/* Set up debugfs entries */
ccp5_debugfs_setup(ccp);
+#endif
return 0;
@@ -998,7 +1006,6 @@
static void ccp5_destroy(struct ccp_device *ccp)
{
- struct device *dev = ccp->dev;
struct ccp_cmd_queue *cmd_q;
struct ccp_cmd *cmd;
unsigned int i;
@@ -1012,11 +1019,13 @@
/* Remove this device from the list of available units first */
ccp_del_device(ccp);
+#ifdef CONFIG_CRYPTO_DEV_CCP_DEBUGFS
/* We're in the process of tearing down the entire driver;
* when all the devices are gone clean up debugfs
*/
if (ccp_present())
ccp5_debugfs_destroy();
+#endif
/* Disable and clear interrupts */
ccp5_disable_queue_interrupts(ccp);
@@ -1038,12 +1047,6 @@
kthread_stop(ccp->cmd_q[i].kthread);
sp_free_ccp_irq(ccp->sp, ccp);
-
- for (i = 0; i < ccp->cmd_q_count; i++) {
- cmd_q = &ccp->cmd_q[i];
- dma_free_coherent(dev, cmd_q->qsize, cmd_q->qbase,
- cmd_q->qbase_dma);
- }
/* Flush the cmd and backlog queue */
while (!list_empty(&ccp->cmd)) {
--
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