summaryrefslogtreecommitdiffstats
path: root/drivers/iommu/fsl_pamu.c
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2021-04-01 17:52:49 +0200
committerJoerg Roedel <jroedel@suse.de>2021-04-07 10:56:52 +0200
commit57fa44be7fdb0d8803ecf11886d41b5002eae8f2 (patch)
treebfcfe5c26f7539f36cfdaf37604de505d90b8f89 /drivers/iommu/fsl_pamu.c
parentiommu/fsl_pamu: remove the rpn and snoop_id arguments to pamu_config_ppaac (diff)
downloadlinux-57fa44be7fdb0d8803ecf11886d41b5002eae8f2.tar.xz
linux-57fa44be7fdb0d8803ecf11886d41b5002eae8f2.zip
iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaace
The win_addr and win_size parameters are always set to 0 and 1 << 36 respectively, so just hard code them. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210401155256.298656-14-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/fsl_pamu.c')
-rw-r--r--drivers/iommu/fsl_pamu.c23
1 files changed, 4 insertions, 19 deletions
diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c
index 742fa0e8c45b..fc38b1fba7cf 100644
--- a/drivers/iommu/fsl_pamu.c
+++ b/drivers/iommu/fsl_pamu.c
@@ -178,8 +178,6 @@ int pamu_update_paace_stash(int liodn, u32 value)
* pamu_config_paace() - Sets up PPAACE entry for specified liodn
*
* @liodn: Logical IO device number
- * @win_addr: starting address of DSA window
- * @win-size: size of DSA window
* @omi: Operation mapping index -- if ~omi == 0 then omi not defined
* @stashid: cache stash id for associated cpu -- if ~stashid == 0 then
* stashid not defined
@@ -187,35 +185,22 @@ int pamu_update_paace_stash(int liodn, u32 value)
*
* 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, u32 stashid, int prot)
+int pamu_config_ppaace(int liodn, u32 omi, u32 stashid, int prot)
{
struct paace *ppaace;
- if ((win_size & (win_size - 1)) || win_size < PAMU_PAGE_SIZE) {
- pr_debug("window size too small or not a power of two %pa\n",
- &win_size);
- return -EINVAL;
- }
-
- if (win_addr & (win_size - 1)) {
- pr_debug("window address is not aligned with window size\n");
- return -EINVAL;
- }
-
ppaace = pamu_get_ppaace(liodn);
if (!ppaace)
return -ENOENT;
/* window size is 2^(WSE+1) bytes */
set_bf(ppaace->addr_bitfields, PPAACE_AF_WSE,
- map_addrspace_size_to_wse(win_size));
+ map_addrspace_size_to_wse(1ULL << 36));
pamu_init_ppaace(ppaace);
- ppaace->wbah = win_addr >> (PAMU_PAGE_SHIFT + 20);
- set_bf(ppaace->addr_bitfields, PPAACE_AF_WBAL,
- (win_addr >> PAMU_PAGE_SHIFT));
+ ppaace->wbah = 0;
+ set_bf(ppaace->addr_bitfields, PPAACE_AF_WBAL, 0);
/* set up operation mapping if it's configured */
if (omi < OME_NUMBER_ENTRIES) {