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Date: Tue, 3 May 2022 15:14:22 +0800
From: Yong Wu <yong.wu@...iatek.com>
To: Joerg Roedel <joro@...tes.org>, Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Will Deacon <will@...nel.org>
CC: Robin Murphy <robin.murphy@....com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Tomasz Figa <tfiga@...omium.org>,
<linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<iommu@...ts.linux-foundation.org>,
Hsin-Yi Wang <hsinyi@...omium.org>, <yong.wu@...iatek.com>,
<youlin.pei@...iatek.com>, <anan.sun@...iatek.com>,
<xueqi.zhang@...iatek.com>, <yen-chang.chen@...iatek.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
<mingyuan.ma@...iatek.com>, <yf.wang@...iatek.com>,
<libo.kang@...iatek.com>, <chengci.xu@...iatek.com>
Subject: [PATCH v7 31/36] iommu/mediatek: Change the domid to iova_region_id
Prepare for adding bankid, also no functional change.
In the previous SoC, each a iova_region is a domain; In the multi-banks
case, each a bank is a domain, then the original function name
"mtk_iommu_get_domain_id" is not proper. Use "iova_region_id" instead of
"domain_id".
Signed-off-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
drivers/iommu/mtk_iommu.c | 46 +++++++++++++++++++--------------------
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 5f298cf6aac3..023bb7d3ffb2 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -467,8 +467,8 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int mtk_iommu_get_domain_id(struct device *dev,
- const struct mtk_iommu_plat_data *plat_data)
+static int mtk_iommu_get_iova_region_id(struct device *dev,
+ const struct mtk_iommu_plat_data *plat_data)
{
const struct mtk_iommu_iova_region *rgn = plat_data->iova_region;
const struct bus_dma_region *dma_rgn = dev->dma_range_map;
@@ -498,7 +498,7 @@ static int mtk_iommu_get_domain_id(struct device *dev,
}
static int mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev,
- bool enable, unsigned int domid)
+ bool enable, unsigned int regionid)
{
struct mtk_smi_larb_iommu *larb_mmu;
unsigned int larbid, portid;
@@ -514,12 +514,12 @@ static int mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev,
if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) {
larb_mmu = &data->larb_imu[larbid];
- region = data->plat_data->iova_region + domid;
+ region = data->plat_data->iova_region + regionid;
larb_mmu->bank[portid] = upper_32_bits(region->iova_base);
- dev_dbg(dev, "%s iommu for larb(%s) port %d dom %d bank %d.\n",
+ dev_dbg(dev, "%s iommu for larb(%s) port %d region %d rgn-bank %d.\n",
enable ? "enable" : "disable", dev_name(larb_mmu->dev),
- portid, domid, larb_mmu->bank[portid]);
+ portid, regionid, larb_mmu->bank[portid]);
if (enable)
larb_mmu->mmu |= MTK_SMI_MMU_EN(portid);
@@ -545,7 +545,7 @@ static int mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev,
static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom,
struct mtk_iommu_data *data,
- unsigned int domid)
+ unsigned int region_id)
{
const struct mtk_iommu_iova_region *region;
struct mtk_iommu_domain *m4u_dom;
@@ -584,7 +584,7 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom,
update_iova_region:
/* Update the iova region for this domain */
- region = data->plat_data->iova_region + domid;
+ region = data->plat_data->iova_region + region_id;
dom->domain.geometry.aperture_start = region->iova_base;
dom->domain.geometry.aperture_end = region->iova_base + region->size - 1;
dom->domain.geometry.force_aperture = true;
@@ -620,18 +620,18 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *m4udev = data->dev;
struct mtk_iommu_bank_data *bank;
unsigned int bankid = 0;
- int ret, domid;
+ int ret, region_id;
- domid = mtk_iommu_get_domain_id(dev, data->plat_data);
- if (domid < 0)
- return domid;
+ region_id = mtk_iommu_get_iova_region_id(dev, data->plat_data);
+ if (region_id < 0)
+ return region_id;
mutex_lock(&dom->mutex);
if (!dom->bank) {
/* Data is in the frstdata in sharing pgtable case. */
frstdata = mtk_iommu_get_frst_data(hw_list);
- ret = mtk_iommu_domain_finalise(dom, frstdata, domid);
+ ret = mtk_iommu_domain_finalise(dom, frstdata, region_id);
if (ret) {
mutex_unlock(&dom->mutex);
return -ENODEV;
@@ -662,7 +662,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
}
mutex_unlock(&data->mutex);
- return mtk_iommu_config(data, dev, true, domid);
+ return mtk_iommu_config(data, dev, true, region_id);
err_unlock:
mutex_unlock(&data->mutex);
@@ -802,22 +802,22 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev)
struct mtk_iommu_data *c_data = dev_iommu_priv_get(dev), *data;
struct list_head *hw_list = c_data->hw_list;
struct iommu_group *group;
- int domid;
+ int regionid;
data = mtk_iommu_get_frst_data(hw_list);
if (!data)
return ERR_PTR(-ENODEV);
- domid = mtk_iommu_get_domain_id(dev, data->plat_data);
- if (domid < 0)
- return ERR_PTR(domid);
+ regionid = mtk_iommu_get_iova_region_id(dev, data->plat_data);
+ if (regionid < 0)
+ return ERR_PTR(regionid);
mutex_lock(&data->mutex);
- group = data->m4u_group[domid];
+ group = data->m4u_group[regionid];
if (!group) {
group = iommu_group_alloc();
if (!IS_ERR(group))
- data->m4u_group[domid] = group;
+ data->m4u_group[regionid] = group;
} else {
iommu_group_ref_get(group);
}
@@ -851,14 +851,14 @@ static void mtk_iommu_get_resv_regions(struct device *dev,
struct list_head *head)
{
struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
- unsigned int domid = mtk_iommu_get_domain_id(dev, data->plat_data), i;
+ unsigned int regionid = mtk_iommu_get_iova_region_id(dev, data->plat_data), i;
const struct mtk_iommu_iova_region *resv, *curdom;
struct iommu_resv_region *region;
int prot = IOMMU_WRITE | IOMMU_READ;
- if ((int)domid < 0)
+ if ((int)regionid < 0)
return;
- curdom = data->plat_data->iova_region + domid;
+ curdom = data->plat_data->iova_region + regionid;
for (i = 0; i < data->plat_data->iova_region_nr; i++) {
resv = data->plat_data->iova_region + i;
--
2.18.0
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