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From 7833c0bf8321cb39614ee889cf3e3a64511c0aa5 Mon Sep 17 00:00:00 2001
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From: eperezma <eperezma@redhat.com>
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Date: Tue, 12 Jan 2021 14:36:28 -0500
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Subject: [PATCH 04/17] hw/arm/smmu: Introduce smmu_get_iotlb_key()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: eperezma <eperezma@redhat.com>
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Message-id: <20210112143638.374060-4-eperezma@redhat.com>
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Patchwork-id: 100596
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH v2 03/13] hw/arm/smmu: Introduce smmu_get_iotlb_key()
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Bugzilla: 1843852
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RH-Acked-by: Xiao Wang <jasowang@redhat.com>
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RH-Acked-by: Peter Xu <peterx@redhat.com>
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RH-Acked-by: Auger Eric <eric.auger@redhat.com>
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From: Eric Auger <eric.auger@redhat.com>
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Introduce the smmu_get_iotlb_key() helper and the
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SMMU_IOTLB_ASID() macro. Also move smmu_get_iotlb_key and
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smmu_iotlb_key_hash in the IOTLB related code section.
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
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Message-id: 20200728150815.11446-4-eric.auger@redhat.com
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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(cherry picked from commit 60a61f1b31fc03080aadb63c9b1006f8b1972adb)
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/arm/smmu-common.c | 66 ++++++++++++++++++++----------------
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hw/arm/smmu-internal.h | 1 +
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include/hw/arm/smmu-common.h | 1 +
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3 files changed, 38 insertions(+), 30 deletions(-)
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diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
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index 8e01505dbee..0b89c9fbbbc 100644
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--- a/hw/arm/smmu-common.c
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+++ b/hw/arm/smmu-common.c
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@@ -32,10 +32,42 @@
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/* IOTLB Management */
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+static guint smmu_iotlb_key_hash(gconstpointer v)
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+{
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+ SMMUIOTLBKey *key = (SMMUIOTLBKey *)v;
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+ uint32_t a, b, c;
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+
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+ /* Jenkins hash */
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+ a = b = c = JHASH_INITVAL + sizeof(*key);
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+ a += key->asid;
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+ b += extract64(key->iova, 0, 32);
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+ c += extract64(key->iova, 32, 32);
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+
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+ __jhash_mix(a, b, c);
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+ __jhash_final(a, b, c);
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+
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+ return c;
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+}
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+
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+static gboolean smmu_iotlb_key_equal(gconstpointer v1, gconstpointer v2)
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+{
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+ const SMMUIOTLBKey *k1 = v1;
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+ const SMMUIOTLBKey *k2 = v2;
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+
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+ return (k1->asid == k2->asid) && (k1->iova == k2->iova);
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+}
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+
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+SMMUIOTLBKey smmu_get_iotlb_key(uint16_t asid, uint64_t iova)
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+{
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+ SMMUIOTLBKey key = {.asid = asid, .iova = iova};
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+
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+ return key;
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+}
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+
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IOMMUTLBEntry *smmu_iotlb_lookup(SMMUState *bs, SMMUTransCfg *cfg,
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hwaddr iova)
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{
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- SMMUIOTLBKey key = {.asid = cfg->asid, .iova = iova};
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+ SMMUIOTLBKey key = smmu_get_iotlb_key(cfg->asid, iova);
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IOMMUTLBEntry *entry = g_hash_table_lookup(bs->iotlb, &key);
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if (entry) {
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@@ -62,8 +94,7 @@ void smmu_iotlb_insert(SMMUState *bs, SMMUTransCfg *cfg, IOMMUTLBEntry *entry)
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smmu_iotlb_inv_all(bs);
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}
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- key->asid = cfg->asid;
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- key->iova = entry->iova;
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+ *key = smmu_get_iotlb_key(cfg->asid, entry->iova);
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trace_smmu_iotlb_insert(cfg->asid, entry->iova);
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g_hash_table_insert(bs->iotlb, key, entry);
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}
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@@ -80,12 +111,12 @@ static gboolean smmu_hash_remove_by_asid(gpointer key, gpointer value,
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uint16_t asid = *(uint16_t *)user_data;
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SMMUIOTLBKey *iotlb_key = (SMMUIOTLBKey *)key;
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- return iotlb_key->asid == asid;
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+ return SMMU_IOTLB_ASID(*iotlb_key) == asid;
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}
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inline void smmu_iotlb_inv_iova(SMMUState *s, uint16_t asid, dma_addr_t iova)
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{
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- SMMUIOTLBKey key = {.asid = asid, .iova = iova};
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+ SMMUIOTLBKey key = smmu_get_iotlb_key(asid, iova);
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trace_smmu_iotlb_inv_iova(asid, iova);
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g_hash_table_remove(s->iotlb, &key);
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@@ -382,31 +413,6 @@ IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid)
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return NULL;
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}
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-static guint smmu_iotlb_key_hash(gconstpointer v)
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-{
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- SMMUIOTLBKey *key = (SMMUIOTLBKey *)v;
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- uint32_t a, b, c;
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-
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- /* Jenkins hash */
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- a = b = c = JHASH_INITVAL + sizeof(*key);
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- a += key->asid;
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- b += extract64(key->iova, 0, 32);
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- c += extract64(key->iova, 32, 32);
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-
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- __jhash_mix(a, b, c);
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- __jhash_final(a, b, c);
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-
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- return c;
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-}
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-
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-static gboolean smmu_iotlb_key_equal(gconstpointer v1, gconstpointer v2)
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-{
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- const SMMUIOTLBKey *k1 = v1;
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- const SMMUIOTLBKey *k2 = v2;
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-
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- return (k1->asid == k2->asid) && (k1->iova == k2->iova);
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-}
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-
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/* Unmap the whole notifier's range */
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static void smmu_unmap_notifier_range(IOMMUNotifier *n)
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{
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diff --git a/hw/arm/smmu-internal.h b/hw/arm/smmu-internal.h
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index 7794d6d3947..3104f768cd2 100644
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--- a/hw/arm/smmu-internal.h
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+++ b/hw/arm/smmu-internal.h
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@@ -96,4 +96,5 @@ uint64_t iova_level_offset(uint64_t iova, int inputsize,
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MAKE_64BIT_MASK(0, gsz - 3);
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}
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+#define SMMU_IOTLB_ASID(key) ((key).asid)
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#endif
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diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h
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index a28650c9350..bceba40885c 100644
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--- a/include/hw/arm/smmu-common.h
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+++ b/include/hw/arm/smmu-common.h
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@@ -155,6 +155,7 @@ IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid);
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IOMMUTLBEntry *smmu_iotlb_lookup(SMMUState *bs, SMMUTransCfg *cfg, hwaddr iova);
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void smmu_iotlb_insert(SMMUState *bs, SMMUTransCfg *cfg, IOMMUTLBEntry *entry);
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+SMMUIOTLBKey smmu_get_iotlb_key(uint16_t asid, uint64_t iova);
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void smmu_iotlb_inv_all(SMMUState *s);
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void smmu_iotlb_inv_asid(SMMUState *s, uint16_t asid);
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void smmu_iotlb_inv_iova(SMMUState *s, uint16_t asid, dma_addr_t iova);
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--
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2.27.0
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