openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Christoph Hellwig 2021-04-01 17:52:49 +02:00 committed by Joerg Roedel
parent 151f9414b8
commit 57fa44be7f
3 changed files with 7 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/iommu/fsl_pamu.c
View File

@ -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) {

3
drivers/iommu/fsl_pamu.h
View File

@ -383,8 +383,7 @@ struct ome {
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, uint32_t stashid, int prot);
int pamu_config_ppaace(int liodn, 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);

10
drivers/iommu/fsl_pamu_domain.c
View File

@ -78,8 +78,6 @@ static int update_liodn_stash(int liodn, struct fsl_dma_domain *dma_domain,
static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev,
int liodn)
{
struct iommu_domain *domain = &dma_domain->iommu_domain;
struct iommu_domain_geometry *geom = &domain->geometry;
u32 omi_index = ~(u32)0;
unsigned long flags;
int ret;
@ -95,14 +93,10 @@ static int pamu_set_liodn(struct fsl_dma_domain *dma_domain, struct device *dev,
ret = pamu_disable_liodn(liodn);
if (ret)
goto out_unlock;
ret = pamu_config_ppaace(liodn, geom->aperture_start,
geom->aperture_end + 1, omi_index,
dma_domain->stash_id, 0);
ret = pamu_config_ppaace(liodn, 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,
dma_domain->stash_id,
ret = pamu_config_ppaace(liodn, ~(u32)0, dma_domain->stash_id,
PAACE_AP_PERMS_QUERY | PAACE_AP_PERMS_UPDATE);
out_unlock:
spin_unlock_irqrestore(&iommu_lock, flags);