lkml.org 
[lkml]   [2021]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 21/24] iommu/mediatek: Change the domid to iova_region_id
Date
This patch also have 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. the name "iova_region_id"
should be proper. this patch only rename the domid to iova_region_id.
This is preparing for adding bankid.

Signed-off-by: Yong Wu <yong.wu@mediatek.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 042489b8e402..8137cfc9c8b9 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -344,8 +344,8 @@ 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;
@@ -375,7 +375,7 @@ 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;
@@ -391,12 +391,12 @@ 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 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);
@@ -423,7 +423,7 @@ 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 list_head *head = data->hw_list;
@@ -470,7 +470,7 @@ 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;
@@ -510,15 +510,15 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct mtk_iommu_bank_data *bank;
struct device *m4udev = data->dev;
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;

bank = &data->bank[bankid];
if (!dom->bank) {
- if (mtk_iommu_domain_finalise(dom, data, domid))
+ if (mtk_iommu_domain_finalise(dom, data, region_id))
return -ENODEV;
dom->bank = bank;
}
@@ -540,7 +540,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
pm_runtime_put(m4udev);
}

- return mtk_iommu_config(data, dev, true, domid);
+ return mtk_iommu_config(data, dev, true, region_id);
}

static void mtk_iommu_detach_device(struct iommu_domain *domain,
@@ -644,21 +644,21 @@ 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);

- 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);
}
@@ -691,14 +691,14 @@ 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
\
 
 \ /
  Last update: 2021-06-30 04:39    [W:0.118 / U:2.964 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site