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sparc32: fix build with STRICT_MM_TYPECHECKS 

Based on recent thread on linux-arch (some weeks ago) I
decided to check how much work was required to build sparc32
with STRICT_MM_TYPECHECKS enabled.

The resulting binary (checked srmmu.o) was to my suprise smaller with
STRICT_MM_TYPECHECKS defined, than without.

As I have no working gear to test sparc32 bits at for the moment,
I did not enable STRICT_MM_TYPECHECKS - but was tempeted to do so.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Sam Ravnborg 2016-04-22 19:41:06 +02:00 committed by David S. Miller
parent 3c46e2d61c
commit 6e6e41879e
5 changed files with 14 additions and 11 deletions
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2
arch/sparc/include/asm/page_32.h
View File

@ -69,7 +69,6 @@ typedef struct { unsigned long iopgprot; } iopgprot_t;
#define __pte(x) ((pte_t) { (x) } )
#define __iopte(x) ((iopte_t) { (x) } )
/* #define __pmd(x) ((pmd_t) { (x) } ) */ /* XXX procedure with loop */
#define __pgd(x) ((pgd_t) { (x) } )
#define __ctxd(x) ((ctxd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
@ -97,7 +96,6 @@ typedef unsigned long iopgprot_t;
#define __pte(x) (x)
#define __iopte(x) (x)
/* #define __pmd(x) (x) */ /* XXX later */
#define __pgd(x) (x)
#define __ctxd(x) (x)
#define __pgprot(x) (x)

2
arch/sparc/include/asm/pgalloc_32.h
View File

@ -31,7 +31,7 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
{
unsigned long pa = __nocache_pa((unsigned long)pmdp);
set_pte((pte_t *)pgdp, (SRMMU_ET_PTD | (pa >> 4)));
set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4))));
}
#define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD)

2
arch/sparc/include/asm/pgtable_32.h
View File

@ -298,7 +298,7 @@ static inline pte_t mk_pte_io(unsigned long page, pgprot_t pgprot, int space)
#define pgprot_noncached pgprot_noncached
static inline pgprot_t pgprot_noncached(pgprot_t prot)
{
prot &= ~__pgprot(SRMMU_CACHE);
pgprot_val(prot) &= ~pgprot_val(__pgprot(SRMMU_CACHE));
return prot;
}

4
arch/sparc/mm/io-unit.c
View File

@ -133,7 +133,7 @@ nexti: scan = find_next_zero_bit(iounit->bmap, limit, scan);
vaddr = IOUNIT_DMA_BASE + (scan << PAGE_SHIFT) + (vaddr & ~PAGE_MASK);
for (k = 0; k < npages; k++, iopte = __iopte(iopte_val(iopte) + 0x100), scan++) {
set_bit(scan, iounit->bmap);
sbus_writel(iopte, &iounit->page_table[scan]);
sbus_writel(iopte_val(iopte), &iounit->page_table[scan]);
}
IOD(("%08lx\n", vaddr));
return vaddr;
@ -228,7 +228,7 @@ static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned lon
i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
iopte = iounit->page_table + i;
sbus_writel(MKIOPTE(__pa(page)), iopte);
sbus_writel(iopte_val(MKIOPTE(__pa(page))), iopte);
}
addr += PAGE_SIZE;
va += PAGE_SIZE;

15
arch/sparc/mm/srmmu.c
View File

@ -107,7 +107,12 @@ static inline int srmmu_pmd_none(pmd_t pmd)
/* XXX should we hyper_flush_whole_icache here - Anton */
static inline void srmmu_ctxd_set(ctxd_t *ctxp, pgd_t *pgdp)
{ set_pte((pte_t *)ctxp, (SRMMU_ET_PTD | (__nocache_pa((unsigned long) pgdp) >> 4))); }
{
pte_t pte;
pte = __pte((SRMMU_ET_PTD | (__nocache_pa(pgdp) >> 4)));
set_pte((pte_t *)ctxp, pte);
}
void pmd_set(pmd_t *pmdp, pte_t *ptep)
{
@ -116,8 +121,8 @@ void pmd_set(pmd_t *pmdp, pte_t *ptep)
ptp = __nocache_pa((unsigned long) ptep) >> 4;
for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
ptp += (SRMMU_REAL_PTRS_PER_PTE*sizeof(pte_t) >> 4);
set_pte((pte_t *)&pmdp->pmdv[i], __pte(SRMMU_ET_PTD | ptp));
ptp += (SRMMU_REAL_PTRS_PER_PTE * sizeof(pte_t) >> 4);
}
}
@ -128,8 +133,8 @@ void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep)
ptp = page_to_pfn(ptep) << (PAGE_SHIFT-4); /* watch for overflow */
for (i = 0; i < PTRS_PER_PTE/SRMMU_REAL_PTRS_PER_PTE; i++) {
set_pte((pte_t *)&pmdp->pmdv[i], SRMMU_ET_PTD | ptp);
ptp += (SRMMU_REAL_PTRS_PER_PTE*sizeof(pte_t) >> 4);
set_pte((pte_t *)&pmdp->pmdv[i], __pte(SRMMU_ET_PTD | ptp));
ptp += (SRMMU_REAL_PTRS_PER_PTE * sizeof(pte_t) >> 4);
}
}