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

Christoph Hellwig
2021-04-01T17:42:44Z

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

Signed-off-by: Christoph Hellwig <hch@lst.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