netdev - [PATCH 12/20] iommu/fsl_pamu: remove the rpn and snoop_id arguments to pamu_config

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Date:   Thu,  1 Apr 2021 17:52:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Li Yang <leoyang.li@....com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: [PATCH 12/20] iommu/fsl_pamu: remove the rpn and snoop_id arguments to pamu_config_ppaac

These are always wired to fixed values, so don't bother passing them as
arguments.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/iommu/fsl_pamu.c        | 14 +++-----------
 drivers/iommu/fsl_pamu.h        |  3 +--
 drivers/iommu/fsl_pamu_domain.c |  6 +++---
 3 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index 3e1647cd5ad47a..742fa0e8c45b88 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -181,18 +181,14 @@ int pamu_update_paace_stash(int liodn, u32 value)
  * @win_addr: starting address of DSA window
  * @win-size: size of DSA window
  * @omi: Operation mapping index -- if ~omi == 0 then omi not defined
- * @rpn: real (true physical) page number
  * @stashid: cache stash id for associated cpu -- if ~stashid == 0 then
  *	     stashid not defined
- * @snoopid: snoop id for hardware coherency -- if ~snoopid == 0 then
- *	     snoopid not defined
  * @prot: window permissions
  *
  * Returns 0 upon success else error code < 0 returned
  */
 int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size,
-		       u32 omi, unsigned long rpn, u32 snoopid, u32 stashid,
-		       int prot)
+		       u32 omi, u32 stashid, int prot)
 {
 	struct paace *ppaace;
 
@@ -234,13 +230,9 @@ int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size,
 	if (~stashid != 0)
 		set_bf(ppaace->impl_attr, PAACE_IA_CID, stashid);
 
-	/* configure snoop id */
-	if (~snoopid != 0)
-		ppaace->domain_attr.to_host.snpid = snoopid;
-
 	set_bf(ppaace->impl_attr, PAACE_IA_ATM, PAACE_ATM_WINDOW_XLATE);
-	ppaace->twbah = rpn >> 20;
-	set_bf(ppaace->win_bitfields, PAACE_WIN_TWBAL, rpn);
+	ppaace->twbah = 0;
+	set_bf(ppaace->win_bitfields, PAACE_WIN_TWBAL, 0);
 	set_bf(ppaace->addr_bitfields, PAACE_AF_AP, prot);
 	set_bf(ppaace->impl_attr, PAACE_IA_WCE, 0);
 	set_bf(ppaace->addr_bitfields, PPAACE_AF_MW, 0);
diff --git a/drivers/iommu/fsl_pamu.h b/drivers/iommu/fsl_pamu.h
index 04fd843d718dd1..c96b29f0c7077f 100644
--- a/drivers/iommu/fsl_pamu.h
+++ b/drivers/iommu/fsl_pamu.h
@@ -384,8 +384,7 @@ int pamu_domain_init(void);
 int pamu_enable_liodn(int liodn);
 int pamu_disable_liodn(int liodn);
 int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size,
-		       u32 omi, unsigned long rpn, u32 snoopid, uint32_t stashid,
-		       int prot);
+		       u32 omi, uint32_t stashid, int prot);
 
 u32 get_stash_id(u32 stash_dest_hint, u32 vcpu);
 void get_ome_index(u32 *omi_index, struct device *dev);
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index e9c1e0dd68f084..c83f1e7c2cb0c9 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -96,13 +96,13 @@ static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev,
 	if (ret)
 		goto out_unlock;
 	ret = pamu_config_ppaace(liodn, geom->aperture_start,
-				 geom->aperture_end + 1, omi_index, 0,
-				 ~(u32)0, dma_domain->stash_id, 0);
+				 geom->aperture_end + 1, omi_index,
+				 dma_domain->stash_id, 0);
 	if (ret)
 		goto out_unlock;
 	ret = pamu_config_ppaace(liodn, geom->aperture_start,
 				 geom->aperture_end + 1, ~(u32)0,
-				 0, ~(u32)0, dma_domain->stash_id,
+				 dma_domain->stash_id,
 				 PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE);
 out_unlock:
 	spin_unlock_irqrestore(&iommu_lock, flags);
-- 
2.30.1