From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/iova.h | 30 +++++++++++++++++-------------
1 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/kernel/include/linux/iova.h b/kernel/include/linux/iova.h
index 8c48bfa..0394d44 100644
--- a/kernel/include/linux/iova.h
+++ b/kernel/include/linux/iova.h
@@ -1,11 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2006, Intel Corporation.
*
- * This file is released under the GPLv2.
- *
* Copyright (C) 2006-2008 Intel Corporation
* Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
- *
*/
#ifndef _IOVA_H_
@@ -74,8 +72,16 @@
struct rb_node *cached32_node; /* Save last 32-bit alloced node */
unsigned long granule; /* pfn granularity for this domain */
unsigned long start_pfn; /* Lower limit for this domain */
- unsigned long end_pfn; /* Upper limit for this domain */
unsigned long dma_32bit_pfn;
+ unsigned long max32_alloc_size; /* Size of last failed allocation */
+ struct iova_fq __percpu *fq; /* Flush Queue */
+
+ atomic64_t fq_flush_start_cnt; /* Number of TLB flushes that
+ have been started */
+
+ atomic64_t fq_flush_finish_cnt; /* Number of TLB flushes that
+ have been finished */
+
struct iova anchor; /* rbtree lookup anchor */
struct iova_rcache rcaches[IOVA_RANGE_CACHE_MAX_SIZE]; /* IOVA range caches */
@@ -84,14 +90,6 @@
iova_entry_dtor entry_dtor; /* IOMMU driver specific destructor for
iova entry */
-
- struct iova_fq __percpu *fq; /* Flush Queue */
-
- atomic64_t fq_flush_start_cnt; /* Number of TLB flushes that
- have been started */
-
- atomic64_t fq_flush_finish_cnt; /* Number of TLB flushes that
- have been finished */
struct timer_list fq_timer; /* Timer to regularily empty the
flush-queues */
@@ -135,7 +133,7 @@
return iova >> iova_shift(iovad);
}
-#if IS_ENABLED(CONFIG_IOMMU_IOVA)
+#if IS_REACHABLE(CONFIG_IOMMU_IOVA)
int iova_cache_get(void);
void iova_cache_put(void);
@@ -166,6 +164,7 @@
struct iova *split_and_remove_iova(struct iova_domain *iovad,
struct iova *iova, unsigned long pfn_lo, unsigned long pfn_hi);
void free_cpu_cached_iovas(unsigned int cpu, struct iova_domain *iovad);
+void free_global_cached_iovas(struct iova_domain *iovad);
#else
static inline int iova_cache_get(void)
{
@@ -273,6 +272,11 @@
struct iova_domain *iovad)
{
}
+
+static inline void free_global_cached_iovas(struct iova_domain *iovad)
+{
+}
+
#endif
#endif
--
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