iommu.lists.linux-foundation.org archive mirror
 help / color / mirror / Atom feed
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 05/13] iommu/mediatek: Remove pgtable info in mtk_iommu_domain
Date: Mon, 4 Nov 2019 19:52:30 +0800	[thread overview]
Message-ID: <20191104115238.2394-6-chao.hao@mediatek.com> (raw)
In-Reply-To: <20191104115238.2394-1-chao.hao@mediatek.com>

This patch will use mtk_iommu_pgtable to replace the part
of pgtable in mtk_iommu_domain, so we can remove the information
of pgtable in mtk_iommu_domain.

Signed-off-by: Chao Hao <chao.hao@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 37 +++++++++++++++++--------------------
 1 file changed, 17 insertions(+), 20 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 3fa09b12e9f9..f264fa8c16a0 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -117,9 +117,6 @@
 #define MTK_M4U_TO_PORT(id)		((id) & 0x1f)
 
 struct mtk_iommu_domain {
-	struct io_pgtable_cfg		cfg;
-	struct io_pgtable_ops		*iop;
-
 	struct iommu_domain		domain;
 };
 
@@ -379,6 +376,10 @@ static int mtk_iommu_attach_pgtable(struct mtk_iommu_data *data,
 	/* binding to pgtable */
 	data->pgtable = pgtable;
 
+	/* update HW settings */
+	writel(pgtable->cfg.arm_v7s_cfg.ttbr[0] & MMU_PT_ADDR_MASK,
+	       data->base + REG_MMU_PT_BASE_ADDR);
+
 	dev_info(data->dev, "m4u%d attach_pgtable done!\n", data->m4u_id);
 
 	return 0;
@@ -404,8 +405,6 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type)
 	if (iommu_get_dma_cookie(&dom->domain))
 		goto  free_dom;
 
-	dom->cfg = pgtable->cfg;
-	dom->iop = pgtable->iop;
 	/* Update our support page sizes bitmap */
 	dom->domain.pgsize_bitmap = pgtable->cfg.pgsize_bitmap;
 
@@ -422,11 +421,12 @@ static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type)
 
 static void mtk_iommu_domain_free(struct iommu_domain *domain)
 {
-	struct mtk_iommu_domain *dom = to_mtk_domain(domain);
+	struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable();
 
-	free_io_pgtable_ops(dom->iop);
 	iommu_put_dma_cookie(domain);
 	kfree(to_mtk_domain(domain));
+	free_io_pgtable_ops(pgtable->iop);
+	kfree(pgtable);
 }
 
 static int mtk_iommu_attach_device(struct iommu_domain *domain,
@@ -439,11 +439,8 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
 		return -ENODEV;
 
 	/* Update the pgtable base address register of the M4U HW */
-	if (!data->m4u_dom) {
+	if (!data->m4u_dom)
 		data->m4u_dom = dom;
-		writel(dom->cfg.arm_v7s_cfg.ttbr[0] & MMU_PT_ADDR_MASK,
-		       data->base + REG_MMU_PT_BASE_ADDR);
-	}
 
 	mtk_iommu_config(data, dev, true);
 	return 0;
@@ -463,7 +460,7 @@ static void mtk_iommu_detach_device(struct iommu_domain *domain,
 static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova,
 			 phys_addr_t paddr, size_t size, int prot)
 {
-	struct mtk_iommu_domain *dom = to_mtk_domain(domain);
+	struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable();
 	struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
 
 	/* The "4GB mode" M4U physically can not use the lower remap of Dram. */
@@ -471,16 +468,16 @@ static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova,
 		paddr |= BIT_ULL(32);
 
 	/* Synchronize with the tlb_lock */
-	return dom->iop->map(dom->iop, iova, paddr, size, prot);
+	return pgtable->iop->map(pgtable->iop, iova, paddr, size, prot);
 }
 
 static size_t mtk_iommu_unmap(struct iommu_domain *domain,
 			      unsigned long iova, size_t size,
 			      struct iommu_iotlb_gather *gather)
 {
-	struct mtk_iommu_domain *dom = to_mtk_domain(domain);
+	struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable();
 
-	return dom->iop->unmap(dom->iop, iova, size, gather);
+	return pgtable->iop->unmap(pgtable->iop, iova, size, gather);
 }
 
 static void mtk_iommu_flush_iotlb_all(struct iommu_domain *domain)
@@ -504,11 +501,11 @@ static void mtk_iommu_iotlb_sync(struct iommu_domain *domain,
 static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
 					  dma_addr_t iova)
 {
-	struct mtk_iommu_domain *dom = to_mtk_domain(domain);
+	struct mtk_iommu_pgtable *pgtable = mtk_iommu_get_pgtable();
 	struct mtk_iommu_data *data = mtk_iommu_get_m4u_data();
 	phys_addr_t pa;
 
-	pa = dom->iop->iova_to_phys(dom->iop, iova);
+	pa = pgtable->iop->iova_to_phys(pgtable->iop, iova);
 	if (data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE)
 		pa &= ~BIT_ULL(32);
 
@@ -850,8 +847,8 @@ static int __maybe_unused mtk_iommu_suspend(struct device *dev)
 static int __maybe_unused mtk_iommu_resume(struct device *dev)
 {
 	struct mtk_iommu_data *data = dev_get_drvdata(dev);
+	struct mtk_iommu_pgtable *pgtable = data->pgtable;
 	struct mtk_iommu_suspend_reg *reg = &data->reg;
-	struct mtk_iommu_domain *m4u_dom = data->m4u_dom;
 	void __iomem *base = data->base;
 	int ret;
 
@@ -869,8 +866,8 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev)
 	writel_relaxed(reg->int_main_control, base + REG_MMU_INT_MAIN_CONTROL);
 	writel_relaxed(reg->ivrp_paddr, base + REG_MMU_IVRP_PADDR);
 	writel_relaxed(reg->vld_pa_rng, base + REG_MMU_VLD_PA_RNG);
-	if (m4u_dom)
-		writel(m4u_dom->cfg.arm_v7s_cfg.ttbr[0] & MMU_PT_ADDR_MASK,
+	if (pgtable)
+		writel(pgtable->cfg.arm_v7s_cfg.ttbr[0] & MMU_PT_ADDR_MASK,
 		       base + REG_MMU_PT_BASE_ADDR);
 	return 0;
 }
-- 
2.18.0

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  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 ` Chao Hao [this message]
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 ` [RESEND, PATCH 09/13] iommu/mediatek: Remove the usage of m4u_dom variable Chao Hao
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191104115238.2394-6-chao.hao@mediatek.com \
    --to=chao.hao@mediatek.com \
    --cc=anan.sun@mediatek.com \
    --cc=cui.zhang@mediatek.com \
    --cc=devicetree@vger.kernel.org \
    --cc=guangming.cao@mediatek.com \
    --cc=iommu@lists.linux-foundation.org \
    --cc=joro@8bytes.org \
    --cc=jun.yan@mediatek.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=matthias.bgg@gmail.com \
    --cc=miles.chen@mediatek.com \
    --cc=robh+dt@kernel.org \
    --cc=wsd_upstream@mediatek.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).