From: Chao Hao <chao.hao@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Anan Sun <anan.sun@mediatek.com>,
devicetree@vger.kernel.org, Cui Zhang <cui.zhang@mediatek.com>,
Jun Yan <jun.yan@mediatek.com>,
wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org,
Chao Hao <chao.hao@mediatek.com>,
iommu@lists.linux-foundation.org,
linux-mediatek@lists.infradead.org,
Miles Chen <miles.chen@mediatek.com>,
linux-arm-kernel@lists.infradead.org,
Guangming Cao <guangming.cao@mediatek.com>
Subject: [RESEND, PATCH 09/13] iommu/mediatek: Remove the usage of m4u_dom variable
Date: Mon, 4 Nov 2019 19:52:34 +0800 [thread overview]
Message-ID: <20191104115238.2394-10-chao.hao@mediatek.com> (raw)
In-Reply-To: <20191104115238.2394-1-chao.hao@mediatek.com>
This patch will remove the usage of the m4u_dom variable.
We have already redefined mtk_iommu_domain structure and it
includes iommu_domain, so m4u_dom variable will not be used.
Signed-off-by: Chao Hao <chao.hao@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 8d68a1af8ed5..42fad1cf73f3 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -113,6 +113,7 @@
* Get the local arbiter ID and the portid within the larb arbiter
* from mtk_m4u_id which is defined by MTK_M4U_ID.
*/
+#define MTK_M4U_ID(larb, port) (((larb) << 5) | (port))
#define MTK_M4U_TO_LARB(id) (((id) >> 5) & 0xf)
#define MTK_M4U_TO_PORT(id) ((id) & 0x1f)
@@ -205,6 +206,22 @@ static u32 mtk_iommu_get_domain_id(struct device *dev)
return get_domain_id(data, portid);
}
+static struct iommu_domain *_get_mtk_domain(struct mtk_iommu_data *data,
+ u32 larbid, u32 portid)
+{
+ u32 domain_id;
+ u32 port_mask = MTK_M4U_ID(larbid, portid);
+ struct mtk_iommu_domain *dom;
+
+ domain_id = get_domain_id(data, port_mask);
+
+ list_for_each_entry(dom, &data->pgtable->m4u_dom_v2, list) {
+ if (dom->id == domain_id)
+ return &dom->domain;
+ }
+ return NULL;
+}
+
static struct mtk_iommu_domain *get_mtk_domain(struct device *dev)
{
struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
@@ -307,7 +324,7 @@ static const struct iommu_flush_ops mtk_iommu_flush_ops = {
static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
{
struct mtk_iommu_data *data = dev_id;
- struct mtk_iommu_domain *dom = data->m4u_dom;
+ struct iommu_domain *domain;
u32 int_state, regval, fault_iova, fault_pa;
unsigned int fault_larb, fault_port, sub_comm = 0;
bool layer, write;
@@ -342,7 +359,8 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
fault_larb = data->plat_data->larbid_remap[data->m4u_id][fault_larb];
- if (report_iommu_fault(&dom->domain, data->dev, fault_iova,
+ domain = _get_mtk_domain(data, fault_larb, fault_port);
+ if (report_iommu_fault(domain, data->dev, fault_iova,
write ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ)) {
dev_err_ratelimited(
data->dev,
@@ -512,16 +530,11 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct mtk_iommu_domain *dom = to_mtk_domain(domain);
struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return -ENODEV;
- /* Update the pgtable base address register of the M4U HW */
- if (!data->m4u_dom)
- data->m4u_dom = dom;
-
mtk_iommu_config(data, dev, true);
return 0;
}
--
2.18.0
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next prev parent reply other threads:[~2019-11-04 11:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-04 11:52 [RESEND,PATCH 00/13] MT6779 IOMMU SUPPORT Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 01/13] dt-bindings: mediatek: Add bindings for MT6779 Chao Hao
2019-11-06 23:40 ` Rob Herring
2019-12-16 12:05 ` Yong Wu
2019-12-20 11:01 ` chao hao
2019-11-04 11:52 ` [RESEND,PATCH 02/13] iommu/mediatek: Add mt6779 IOMMU basic support Chao Hao
2019-12-16 12:07 ` Yong Wu
2019-12-25 6:58 ` chao hao
2019-11-04 11:52 ` [RESEND,PATCH 03/13] iommu/mediatek: Add mtk_iommu_pgtable structure Chao Hao
2019-12-16 12:13 ` Yong Wu
2019-12-31 9:39 ` chao hao
2020-02-15 12:17 ` Yong Wu
2020-02-25 7:25 ` chao hao
2020-02-26 6:36 ` chao hao
2019-11-04 11:52 ` [RESEND, PATCH 04/13] iommu/mediatek: Remove mtk_iommu_domain_finalise Chao Hao
2019-11-04 11:52 ` [RESEND, PATCH 05/13] iommu/mediatek: Remove pgtable info in mtk_iommu_domain Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 06/13] iommu/mediatek: Change get the way of m4u_group Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 07/13] iommu/mediatek: Add smi_larb info about device Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 08/13] iommu/mediatek: Add mtk_domain_data structure Chao Hao
2019-11-04 11:52 ` Chao Hao [this message]
2019-11-04 11:52 ` [RESEND, PATCH 10/13] iommu/mediatek: Remove mtk_iommu_get_m4u_data api Chao Hao
2019-11-04 11:52 ` [RESEND,PATCH 11/13] iommu/mediatek: Add iova reserved function Chao Hao
2019-11-04 11:52 ` [RESEND, PATCH 12/13] iommu/mediatek: Change single domain to multiple domains Chao Hao
2019-11-04 11:52 ` [RESEND, PATCH 13/13] iommu/mediatek: Add multiple mtk_iommu_domain support for mt6779 Chao Hao
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