Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index fc5f0b5..be99d40 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -1,26 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
+ * Author: Stepan Moskovchenko <stepanm@codeaurora.org>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/io.h>
+#include <linux/io-pgtable.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/spinlock.h>
@@ -31,11 +21,10 @@
#include <linux/of_iommu.h>
#include <asm/cacheflush.h>
-#include <asm/sizes.h>
+#include <linux/sizes.h>
#include "msm_iommu_hw-8xxx.h"
#include "msm_iommu.h"
-#include "io-pgtable.h"
#define MRC(reg, processor, op1, crn, crm, op2) \
__asm__ __volatile__ ( \
@@ -179,20 +168,29 @@
return;
}
-static void __flush_iotlb_sync(void *cookie)
+static void __flush_iotlb_walk(unsigned long iova, size_t size,
+ size_t granule, void *cookie)
{
- /*
- * Nothing is needed here, the barrier to guarantee
- * completion of the tlb sync operation is implicitly
- * taken care when the iommu client does a writel before
- * kick starting the other master.
- */
+ __flush_iotlb_range(iova, size, granule, false, cookie);
}
-static const struct iommu_gather_ops msm_iommu_gather_ops = {
+static void __flush_iotlb_leaf(unsigned long iova, size_t size,
+ size_t granule, void *cookie)
+{
+ __flush_iotlb_range(iova, size, granule, true, cookie);
+}
+
+static void __flush_iotlb_page(struct iommu_iotlb_gather *gather,
+ unsigned long iova, size_t granule, void *cookie)
+{
+ __flush_iotlb_range(iova, granule, granule, true, cookie);
+}
+
+static const struct iommu_flush_ops msm_iommu_flush_ops = {
.tlb_flush_all = __flush_iotlb,
- .tlb_add_flush = __flush_iotlb_range,
- .tlb_sync = __flush_iotlb_sync,
+ .tlb_flush_walk = __flush_iotlb_walk,
+ .tlb_flush_leaf = __flush_iotlb_leaf,
+ .tlb_add_page = __flush_iotlb_page,
};
static int msm_iommu_alloc_ctx(unsigned long *map, int start, int end)
@@ -356,7 +354,7 @@
.pgsize_bitmap = msm_iommu_ops.pgsize_bitmap,
.ias = 32,
.oas = 32,
- .tlb = &msm_iommu_gather_ops,
+ .tlb = &msm_iommu_flush_ops,
.iommu_dev = priv->dev,
};
@@ -459,10 +457,10 @@
master->num =
msm_iommu_alloc_ctx(iommu->context_map,
0, iommu->ncb);
- if (IS_ERR_VALUE(master->num)) {
- ret = -ENODEV;
- goto fail;
- }
+ if (IS_ERR_VALUE(master->num)) {
+ ret = -ENODEV;
+ goto fail;
+ }
config_mids(iommu, master);
__program_context(iommu->base, master->num,
priv);
@@ -520,13 +518,13 @@
}
static size_t msm_iommu_unmap(struct iommu_domain *domain, unsigned long iova,
- size_t len)
+ size_t len, struct iommu_iotlb_gather *gather)
{
struct msm_priv *priv = to_msm_priv(domain);
unsigned long flags;
spin_lock_irqsave(&priv->pgtlock, flags);
- len = priv->iop->unmap(priv->iop, iova, len);
+ len = priv->iop->unmap(priv->iop, iova, len, gather);
spin_unlock_irqrestore(&priv->pgtlock, flags);
return len;
@@ -702,6 +700,13 @@
.detach_dev = msm_iommu_detach_dev,
.map = msm_iommu_map,
.unmap = msm_iommu_unmap,
+ /*
+ * Nothing is needed here, the barrier to guarantee
+ * completion of the tlb sync operation is implicitly
+ * taken care when the iommu client does a writel before
+ * kick starting the other master.
+ */
+ .iotlb_sync = NULL,
.iova_to_phys = msm_iommu_iova_to_phys,
.add_device = msm_iommu_add_device,
.remove_device = msm_iommu_remove_device,
@@ -761,7 +766,6 @@
iommu->irq = platform_get_irq(pdev, 0);
if (iommu->irq < 0) {
- dev_err(iommu->dev, "could not get iommu irq\n");
ret = -ENODEV;
goto fail;
}
@@ -861,14 +865,5 @@
return ret;
}
-
-static void __exit msm_iommu_driver_exit(void)
-{
- platform_driver_unregister(&msm_iommu_driver);
-}
-
subsys_initcall(msm_iommu_driver_init);
-module_exit(msm_iommu_driver_exit);
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Stepan Moskovchenko <stepanm@codeaurora.org>");