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Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

Browse Source 
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] fix kvm defines for 31 bit compile
  [S390] use generic RCU page-table freeing code
  [S390] qdio: Split SBAL entry flags
  [S390] kvm-s390: fix stfle facilities numbers >=64
  [S390] kvm-s390: Fix host crash on misbehaving guests
This commit is contained in:
Linus Torvalds 2011-06-07 18:47:53 -07:00
commit aec040e29e
14 changed files with 297 additions and 401 deletions
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1
arch/s390/Kconfig
View File

@ -89,6 +89,7 @@ config S390
select HAVE_GET_USER_PAGES_FAST select HAVE_GET_USER_PAGES_FAST
select HAVE_ARCH_MUTEX_CPU_RELAX select HAVE_ARCH_MUTEX_CPU_RELAX
select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 select HAVE_ARCH_JUMP_LABEL if !MARCH_G5
select HAVE_RCU_TABLE_FREE if SMP
select ARCH_INLINE_SPIN_TRYLOCK select ARCH_INLINE_SPIN_TRYLOCK
select ARCH_INLINE_SPIN_TRYLOCK_BH select ARCH_INLINE_SPIN_TRYLOCK_BH
select ARCH_INLINE_SPIN_LOCK select ARCH_INLINE_SPIN_LOCK

8
arch/s390/include/asm/pgalloc.h
View File

@ -17,15 +17,15 @@
#include <linux/gfp.h> #include <linux/gfp.h>
#include <linux/mm.h> #include <linux/mm.h>
#define check_pgt_cache() do {} while (0)
unsigned long *crst_table_alloc(struct mm_struct *); unsigned long *crst_table_alloc(struct mm_struct *);
void crst_table_free(struct mm_struct *, unsigned long *); void crst_table_free(struct mm_struct *, unsigned long *);
void crst_table_free_rcu(struct mm_struct *, unsigned long *);
unsigned long *page_table_alloc(struct mm_struct *); unsigned long *page_table_alloc(struct mm_struct *);
void page_table_free(struct mm_struct *, unsigned long *); void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mm_struct *, unsigned long *); #ifdef CONFIG_HAVE_RCU_TABLE_FREE
void page_table_free_rcu(struct mmu_gather *, unsigned long *);
void __tlb_remove_table(void *_table);
#endif
static inline void clear_table(unsigned long *s, unsigned long val, size_t n) static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
{ {

39
arch/s390/include/asm/pgtable.h
View File

@ -293,19 +293,6 @@ extern unsigned long VMALLOC_START;
* swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid. * swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid.
*/ */
/* Page status table bits for virtualization */
#define RCP_ACC_BITS 0xf000000000000000UL
#define RCP_FP_BIT 0x0800000000000000UL
#define RCP_PCL_BIT 0x0080000000000000UL
#define RCP_HR_BIT 0x0040000000000000UL
#define RCP_HC_BIT 0x0020000000000000UL
#define RCP_GR_BIT 0x0004000000000000UL
#define RCP_GC_BIT 0x0002000000000000UL
/* User dirty / referenced bit for KVM's migration feature */
#define KVM_UR_BIT 0x0000800000000000UL
#define KVM_UC_BIT 0x0000400000000000UL
#ifndef __s390x__ #ifndef __s390x__
/* Bits in the segment table address-space-control-element */ /* Bits in the segment table address-space-control-element */
@ -325,6 +312,19 @@ extern unsigned long VMALLOC_START;
#define _SEGMENT_ENTRY (_SEGMENT_ENTRY_PTL) #define _SEGMENT_ENTRY (_SEGMENT_ENTRY_PTL)
#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV) #define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV)
/* Page status table bits for virtualization */
#define RCP_ACC_BITS 0xf0000000UL
#define RCP_FP_BIT 0x08000000UL
#define RCP_PCL_BIT 0x00800000UL
#define RCP_HR_BIT 0x00400000UL
#define RCP_HC_BIT 0x00200000UL
#define RCP_GR_BIT 0x00040000UL
#define RCP_GC_BIT 0x00020000UL
/* User dirty / referenced bit for KVM's migration feature */
#define KVM_UR_BIT 0x00008000UL
#define KVM_UC_BIT 0x00004000UL
#else /* __s390x__ */ #else /* __s390x__ */
/* Bits in the segment/region table address-space-control-element */ /* Bits in the segment/region table address-space-control-element */
@ -367,6 +367,19 @@ extern unsigned long VMALLOC_START;
#define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */ #define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */
#define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */ #define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */
/* Page status table bits for virtualization */
#define RCP_ACC_BITS 0xf000000000000000UL
#define RCP_FP_BIT 0x0800000000000000UL
#define RCP_PCL_BIT 0x0080000000000000UL
#define RCP_HR_BIT 0x0040000000000000UL
#define RCP_HC_BIT 0x0020000000000000UL
#define RCP_GR_BIT 0x0004000000000000UL
#define RCP_GC_BIT 0x0002000000000000UL
/* User dirty / referenced bit for KVM's migration feature */
#define KVM_UR_BIT 0x0000800000000000UL
#define KVM_UC_BIT 0x0000400000000000UL
#endif /* __s390x__ */ #endif /* __s390x__ */
/* /*

119
arch/s390/include/asm/qdio.h
View File

@ -139,110 +139,47 @@ struct slib {
struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
} __attribute__ ((packed, aligned(2048))); } __attribute__ ((packed, aligned(2048)));
/** #define SBAL_EFLAGS_LAST_ENTRY 0x40
* struct sbal_flags - storage block address list flags #define SBAL_EFLAGS_CONTIGUOUS 0x20
* @last: last entry #define SBAL_EFLAGS_FIRST_FRAG 0x04
* @cont: contiguous storage #define SBAL_EFLAGS_MIDDLE_FRAG 0x08
* @frag: fragmentation #define SBAL_EFLAGS_LAST_FRAG 0x0c
*/ #define SBAL_EFLAGS_MASK 0x6f
struct sbal_flags {
u8 : 1;
u8 last : 1;
u8 cont : 1;
u8 : 1;
u8 frag : 2;
u8 : 2;
} __attribute__ ((packed));
#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL #define SBAL_SFLAGS0_PCI_REQ 0x40
#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL #define SBAL_SFLAGS0_DATA_CONTINUATION 0x20
#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
/* Awesome OpenFCP extensions */ /* Awesome OpenFCP extensions */
#define SBAL_FLAGS0_TYPE_STATUS 0x00UL #define SBAL_SFLAGS0_TYPE_STATUS 0x00
#define SBAL_FLAGS0_TYPE_WRITE 0x08UL #define SBAL_SFLAGS0_TYPE_WRITE 0x08
#define SBAL_FLAGS0_TYPE_READ 0x10UL #define SBAL_SFLAGS0_TYPE_READ 0x10
#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL #define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18
#define SBAL_FLAGS0_MORE_SBALS 0x04UL #define SBAL_SFLAGS0_MORE_SBALS 0x04
#define SBAL_FLAGS0_COMMAND 0x02UL #define SBAL_SFLAGS0_COMMAND 0x02
#define SBAL_FLAGS0_LAST_SBAL 0x00UL #define SBAL_SFLAGS0_LAST_SBAL 0x00
#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND #define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND
#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS #define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS
#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND #define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND)
#define SBAL_FLAGS0_PCI 0x40
/**
* struct sbal_sbalf_0 - sbal flags for sbale 0
* @pci: PCI indicator
* @cont: data continuation
* @sbtype: storage-block type (FCP)
*/
struct sbal_sbalf_0 {
u8 : 1;
u8 pci : 1;
u8 cont : 1;
u8 sbtype : 2;
u8 : 3;
} __attribute__ ((packed));
/**
* struct sbal_sbalf_1 - sbal flags for sbale 1
* @key: storage key
*/
struct sbal_sbalf_1 {
u8 : 4;
u8 key : 4;
} __attribute__ ((packed));
/**
* struct sbal_sbalf_14 - sbal flags for sbale 14
* @erridx: error index
*/
struct sbal_sbalf_14 {
u8 : 4;
u8 erridx : 4;
} __attribute__ ((packed));
/**
* struct sbal_sbalf_15 - sbal flags for sbale 15
* @reason: reason for error state
*/
struct sbal_sbalf_15 {
u8 reason;
} __attribute__ ((packed));
/**
* union sbal_sbalf - storage block address list flags
* @i0: sbalf0
* @i1: sbalf1
* @i14: sbalf14
* @i15: sblaf15
* @value: raw value
*/
union sbal_sbalf {
struct sbal_sbalf_0 i0;
struct sbal_sbalf_1 i1;
struct sbal_sbalf_14 i14;
struct sbal_sbalf_15 i15;
u8 value;
};
/** /**
* struct qdio_buffer_element - SBAL entry * struct qdio_buffer_element - SBAL entry
* @flags: flags * @eflags: SBAL entry flags
* @scount: SBAL count
* @sflags: whole SBAL flags
* @length: length * @length: length
* @addr: address * @addr: address
*/ */
struct qdio_buffer_element { struct qdio_buffer_element {
u32 flags; u8 eflags;
/* private: */
u8 res1;
/* public: */
u8 scount;
u8 sflags;
u32 length; u32 length;
#ifdef CONFIG_32BIT #ifdef CONFIG_32BIT
/* private: */ /* private: */
void *reserved; void *res2;
/* public: */ /* public: */
#endif #endif
void *addr; void *addr;

94
arch/s390/include/asm/tlb.h
View File

@ -26,67 +26,60 @@
#include <linux/swap.h> #include <linux/swap.h>
#include <asm/processor.h> #include <asm/processor.h>
#include <asm/pgalloc.h> #include <asm/pgalloc.h>
#include <asm/smp.h>
#include <asm/tlbflush.h> #include <asm/tlbflush.h>
struct mmu_gather { struct mmu_gather {
struct mm_struct *mm; struct mm_struct *mm;
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
struct mmu_table_batch *batch;
#endif
unsigned int fullmm; unsigned int fullmm;
unsigned int nr_ptes; unsigned int need_flush;
unsigned int nr_pxds;
unsigned int max;
void **array;
void *local[8];
}; };
static inline void __tlb_alloc_page(struct mmu_gather *tlb) #ifdef CONFIG_HAVE_RCU_TABLE_FREE
{ struct mmu_table_batch {
unsigned long addr = __get_free_pages(GFP_NOWAIT | __GFP_NOWARN, 0); struct rcu_head rcu;
unsigned int nr;
void *tables[0];
};
if (addr) { #define MAX_TABLE_BATCH \
tlb->array = (void *) addr; ((PAGE_SIZE - sizeof(struct mmu_table_batch)) / sizeof(void *))
tlb->max = PAGE_SIZE / sizeof(void *);
} extern void tlb_table_flush(struct mmu_gather *tlb);
} extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
#endif
static inline void tlb_gather_mmu(struct mmu_gather *tlb, static inline void tlb_gather_mmu(struct mmu_gather *tlb,
struct mm_struct *mm, struct mm_struct *mm,
unsigned int full_mm_flush) unsigned int full_mm_flush)
{ {
tlb->mm = mm; tlb->mm = mm;
tlb->max = ARRAY_SIZE(tlb->local);
tlb->array = tlb->local;
tlb->fullmm = full_mm_flush; tlb->fullmm = full_mm_flush;
tlb->need_flush = 0;
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
tlb->batch = NULL;
#endif
if (tlb->fullmm) if (tlb->fullmm)
__tlb_flush_mm(mm); __tlb_flush_mm(mm);
else
__tlb_alloc_page(tlb);
tlb->nr_ptes = 0;
tlb->nr_pxds = tlb->max;
} }
static inline void tlb_flush_mmu(struct mmu_gather *tlb) static inline void tlb_flush_mmu(struct mmu_gather *tlb)
{ {
if (!tlb->fullmm && (tlb->nr_ptes > 0 || tlb->nr_pxds < tlb->max)) if (!tlb->need_flush)
__tlb_flush_mm(tlb->mm); return;
while (tlb->nr_ptes > 0) tlb->need_flush = 0;
page_table_free_rcu(tlb->mm, tlb->array[--tlb->nr_ptes]); __tlb_flush_mm(tlb->mm);
while (tlb->nr_pxds < tlb->max) #ifdef CONFIG_HAVE_RCU_TABLE_FREE
crst_table_free_rcu(tlb->mm, tlb->array[tlb->nr_pxds++]); tlb_table_flush(tlb);
#endif
} }
static inline void tlb_finish_mmu(struct mmu_gather *tlb, static inline void tlb_finish_mmu(struct mmu_gather *tlb,
unsigned long start, unsigned long end) unsigned long start, unsigned long end)
{ {
tlb_flush_mmu(tlb); tlb_flush_mmu(tlb);
rcu_table_freelist_finish();
/* keep the page table cache within bounds */
check_pgt_cache();
if (tlb->array != tlb->local)
free_pages((unsigned long) tlb->array, 0);
} }
/* /*
@ -112,12 +105,11 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
unsigned long address) unsigned long address)
{ {
if (!tlb->fullmm) { #ifdef CONFIG_HAVE_RCU_TABLE_FREE
tlb->array[tlb->nr_ptes++] = pte; if (!tlb->fullmm)
if (tlb->nr_ptes >= tlb->nr_pxds) return page_table_free_rcu(tlb, (unsigned long *) pte);
tlb_flush_mmu(tlb); #endif
} else page_table_free(tlb->mm, (unsigned long *) pte);
page_table_free(tlb->mm, (unsigned long *) pte);
} }
/* /*
@ -133,12 +125,11 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
#ifdef __s390x__ #ifdef __s390x__
if (tlb->mm->context.asce_limit <= (1UL << 31)) if (tlb->mm->context.asce_limit <= (1UL << 31))
return; return;
if (!tlb->fullmm) { #ifdef CONFIG_HAVE_RCU_TABLE_FREE
tlb->array[--tlb->nr_pxds] = pmd; if (!tlb->fullmm)
if (tlb->nr_ptes >= tlb->nr_pxds) return tlb_remove_table(tlb, pmd);
tlb_flush_mmu(tlb); #endif
} else crst_table_free(tlb->mm, (unsigned long *) pmd);
crst_table_free(tlb->mm, (unsigned long *) pmd);
#endif #endif
} }
@ -155,12 +146,11 @@ static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
#ifdef __s390x__ #ifdef __s390x__
if (tlb->mm->context.asce_limit <= (1UL << 42)) if (tlb->mm->context.asce_limit <= (1UL << 42))
return; return;
if (!tlb->fullmm) { #ifdef CONFIG_HAVE_RCU_TABLE_FREE
tlb->array[--tlb->nr_pxds] = pud; if (!tlb->fullmm)
if (tlb->nr_ptes >= tlb->nr_pxds) return tlb_remove_table(tlb, pud);
tlb_flush_mmu(tlb); #endif
} else crst_table_free(tlb->mm, (unsigned long *) pud);
crst_table_free(tlb->mm, (unsigned long *) pud);
#endif #endif
} }

1
arch/s390/kvm/kvm-s390.c
View File

@ -731,6 +731,7 @@ static int __init kvm_s390_init(void)
} }
memcpy(facilities, S390_lowcore.stfle_fac_list, 16); memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
facilities[0] &= 0xff00fff3f47c0000ULL; facilities[0] &= 0xff00fff3f47c0000ULL;
facilities[1] &= 0x201c000000000000ULL;
return 0; return 0;
} }

2
arch/s390/kvm/sie64a.S
View File

@ -93,4 +93,6 @@ sie_err:
.section __ex_table,"a" .section __ex_table,"a"
.quad sie_inst,sie_err .quad sie_inst,sie_err
.quad sie_exit,sie_err
.quad sie_reenter,sie_err
.previous .previous

304
arch/s390/mm/pgtable.c
View File

@ -24,94 +24,12 @@
#include <asm/tlbflush.h> #include <asm/tlbflush.h>
#include <asm/mmu_context.h> #include <asm/mmu_context.h>
struct rcu_table_freelist {
struct rcu_head rcu;
struct mm_struct *mm;
unsigned int pgt_index;
unsigned int crst_index;
unsigned long *table[0];
};
#define RCU_FREELIST_SIZE \
((PAGE_SIZE - sizeof(struct rcu_table_freelist)) \
/ sizeof(unsigned long))
static DEFINE_PER_CPU(struct rcu_table_freelist *, rcu_table_freelist);
static void __page_table_free(struct mm_struct *mm, unsigned long *table);
static struct rcu_table_freelist *rcu_table_freelist_get(struct mm_struct *mm)
{
struct rcu_table_freelist **batchp = &__get_cpu_var(rcu_table_freelist);
struct rcu_table_freelist *batch = *batchp;
if (batch)
return batch;
batch = (struct rcu_table_freelist *) __get_free_page(GFP_ATOMIC);
if (batch) {
batch->mm = mm;
batch->pgt_index = 0;
batch->crst_index = RCU_FREELIST_SIZE;
*batchp = batch;
}
return batch;
}
static void rcu_table_freelist_callback(struct rcu_head *head)
{
struct rcu_table_freelist *batch =
container_of(head, struct rcu_table_freelist, rcu);
while (batch->pgt_index > 0)
__page_table_free(batch->mm, batch->table[--batch->pgt_index]);
while (batch->crst_index < RCU_FREELIST_SIZE)
crst_table_free(batch->mm, batch->table[batch->crst_index++]);
free_page((unsigned long) batch);
}
void rcu_table_freelist_finish(void)
{
struct rcu_table_freelist **batchp = &get_cpu_var(rcu_table_freelist);
struct rcu_table_freelist *batch = *batchp;
if (!batch)
goto out;
call_rcu(&batch->rcu, rcu_table_freelist_callback);
*batchp = NULL;
out:
put_cpu_var(rcu_table_freelist);
}
static void smp_sync(void *arg)
{
}
#ifndef CONFIG_64BIT #ifndef CONFIG_64BIT
#define ALLOC_ORDER 1 #define ALLOC_ORDER 1
#define TABLES_PER_PAGE 4 #define FRAG_MASK 0x0f
#define FRAG_MASK 15UL
#define SECOND_HALVES 10UL
void clear_table_pgstes(unsigned long *table)
{
clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/4);
memset(table + 256, 0, PAGE_SIZE/4);
clear_table(table + 512, _PAGE_TYPE_EMPTY, PAGE_SIZE/4);
memset(table + 768, 0, PAGE_SIZE/4);
}
#else #else
#define ALLOC_ORDER 2 #define ALLOC_ORDER 2
#define TABLES_PER_PAGE 2 #define FRAG_MASK 0x03
#define FRAG_MASK 3UL
#define SECOND_HALVES 2UL
void clear_table_pgstes(unsigned long *table)
{
clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/2);
memset(table + 256, 0, PAGE_SIZE/2);
}
#endif #endif
unsigned long VMALLOC_START = VMALLOC_END - VMALLOC_SIZE; unsigned long VMALLOC_START = VMALLOC_END - VMALLOC_SIZE;
@ -140,29 +58,6 @@ void crst_table_free(struct mm_struct *mm, unsigned long *table)
free_pages((unsigned long) table, ALLOC_ORDER); free_pages((unsigned long) table, ALLOC_ORDER);
} }
void crst_table_free_rcu(struct mm_struct *mm, unsigned long *table)
{
struct rcu_table_freelist *batch;
preempt_disable();
if (atomic_read(&mm->mm_users) < 2 &&
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) {
crst_table_free(mm, table);
goto out;
}
batch = rcu_table_freelist_get(mm);
if (!batch) {
smp_call_function(smp_sync, NULL, 1);
crst_table_free(mm, table);
goto out;
}
batch->table[--batch->crst_index] = table;
if (batch->pgt_index >= batch->crst_index)
rcu_table_freelist_finish();
out:
preempt_enable();
}
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
int crst_table_upgrade(struct mm_struct *mm, unsigned long limit) int crst_table_upgrade(struct mm_struct *mm, unsigned long limit)
{ {
@ -238,124 +133,175 @@ void crst_table_downgrade(struct mm_struct *mm, unsigned long limit)
} }
#endif #endif
static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits)
{
unsigned int old, new;
do {
old = atomic_read(v);
new = old ^ bits;
} while (atomic_cmpxchg(v, old, new) != old);
return new;
}
/* /*
* page table entry allocation/free routines. * page table entry allocation/free routines.
*/ */
#ifdef CONFIG_PGSTE
static inline unsigned long *page_table_alloc_pgste(struct mm_struct *mm)
{
struct page *page;
unsigned long *table;
page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
if (!page)
return NULL;
pgtable_page_ctor(page);
atomic_set(&page->_mapcount, 3);
table = (unsigned long *) page_to_phys(page);
clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE/2);
clear_table(table + PTRS_PER_PTE, 0, PAGE_SIZE/2);
return table;
}
static inline void page_table_free_pgste(unsigned long *table)
{
struct page *page;
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
pgtable_page_ctor(page);
atomic_set(&page->_mapcount, -1);
__free_page(page);
}
#endif
unsigned long *page_table_alloc(struct mm_struct *mm) unsigned long *page_table_alloc(struct mm_struct *mm)
{ {
struct page *page; struct page *page;
unsigned long *table; unsigned long *table;
unsigned long bits; unsigned int mask, bit;
bits = (mm->context.has_pgste) ? 3UL : 1UL; #ifdef CONFIG_PGSTE
if (mm_has_pgste(mm))
return page_table_alloc_pgste(mm);
#endif
/* Allocate fragments of a 4K page as 1K/2K page table */
spin_lock_bh(&mm->context.list_lock); spin_lock_bh(&mm->context.list_lock);
page = NULL; mask = FRAG_MASK;
if (!list_empty(&mm->context.pgtable_list)) { if (!list_empty(&mm->context.pgtable_list)) {
page = list_first_entry(&mm->context.pgtable_list, page = list_first_entry(&mm->context.pgtable_list,
struct page, lru); struct page, lru);
if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1)) table = (unsigned long *) page_to_phys(page);
page = NULL; mask = atomic_read(&page->_mapcount);
mask = mask | (mask >> 4);
} }
if (!page) { if ((mask & FRAG_MASK) == FRAG_MASK) {
spin_unlock_bh(&mm->context.list_lock); spin_unlock_bh(&mm->context.list_lock);
page = alloc_page(GFP_KERNEL|__GFP_REPEAT); page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
if (!page) if (!page)
return NULL; return NULL;
pgtable_page_ctor(page); pgtable_page_ctor(page);
page->flags &= ~FRAG_MASK; atomic_set(&page->_mapcount, 1);
table = (unsigned long *) page_to_phys(page); table = (unsigned long *) page_to_phys(page);
if (mm->context.has_pgste) clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE);
clear_table_pgstes(table);
else
clear_table(table, _PAGE_TYPE_EMPTY, PAGE_SIZE);
spin_lock_bh(&mm->context.list_lock); spin_lock_bh(&mm->context.list_lock);
list_add(&page->lru, &mm->context.pgtable_list); list_add(&page->lru, &mm->context.pgtable_list);
} else {
for (bit = 1; mask & bit; bit <<= 1)
table += PTRS_PER_PTE;
mask = atomic_xor_bits(&page->_mapcount, bit);
if ((mask & FRAG_MASK) == FRAG_MASK)
list_del(&page->lru);
} }
table = (unsigned long *) page_to_phys(page);
while (page->flags & bits) {
table += 256;
bits <<= 1;
}
page->flags |= bits;
if ((page->flags & FRAG_MASK) == ((1UL << TABLES_PER_PAGE) - 1))
list_move_tail(&page->lru, &mm->context.pgtable_list);
spin_unlock_bh(&mm->context.list_lock); spin_unlock_bh(&mm->context.list_lock);
return table; return table;
} }
static void __page_table_free(struct mm_struct *mm, unsigned long *table)
{
struct page *page;
unsigned long bits;
bits = ((unsigned long) table) & 15;
table = (unsigned long *)(((unsigned long) table) ^ bits);
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
page->flags ^= bits;
if (!(page->flags & FRAG_MASK)) {
pgtable_page_dtor(page);
__free_page(page);
}
}
void page_table_free(struct mm_struct *mm, unsigned long *table) void page_table_free(struct mm_struct *mm, unsigned long *table)
{ {
struct page *page; struct page *page;
unsigned long bits; unsigned int bit, mask;
bits = (mm->context.has_pgste) ? 3UL : 1UL; #ifdef CONFIG_PGSTE
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long); if (mm_has_pgste(mm))
return page_table_free_pgste(table);
#endif
/* Free 1K/2K page table fragment of a 4K page */
page = pfn_to_page(__pa(table) >> PAGE_SHIFT); page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
bit = 1 << ((__pa(table) & ~PAGE_MASK)/(PTRS_PER_PTE*sizeof(pte_t)));
spin_lock_bh(&mm->context.list_lock); spin_lock_bh(&mm->context.list_lock);
page->flags ^= bits; if ((atomic_read(&page->_mapcount) & FRAG_MASK) != FRAG_MASK)
if (page->flags & FRAG_MASK) {
/* Page now has some free pgtable fragments. */
if (!list_empty(&page->lru))
list_move(&page->lru, &mm->context.pgtable_list);
page = NULL;
} else
/* All fragments of the 4K page have been freed. */
list_del(&page->lru); list_del(&page->lru);
mask = atomic_xor_bits(&page->_mapcount, bit);
if (mask & FRAG_MASK)
list_add(&page->lru, &mm->context.pgtable_list);
spin_unlock_bh(&mm->context.list_lock); spin_unlock_bh(&mm->context.list_lock);
if (page) { if (mask == 0) {
pgtable_page_dtor(page); pgtable_page_dtor(page);
atomic_set(&page->_mapcount, -1);
__free_page(page); __free_page(page);
} }
} }
void page_table_free_rcu(struct mm_struct *mm, unsigned long *table) #ifdef CONFIG_HAVE_RCU_TABLE_FREE
{
struct rcu_table_freelist *batch;
struct page *page;
unsigned long bits;
preempt_disable(); static void __page_table_free_rcu(void *table, unsigned bit)
if (atomic_read(&mm->mm_users) < 2 && {
cpumask_equal(mm_cpumask(mm), cpumask_of(smp_processor_id()))) { struct page *page;
page_table_free(mm, table);
goto out; #ifdef CONFIG_PGSTE
if (bit == FRAG_MASK)
return page_table_free_pgste(table);
#endif
/* Free 1K/2K page table fragment of a 4K page */
page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
if (atomic_xor_bits(&page->_mapcount, bit) == 0) {
pgtable_page_dtor(page);
atomic_set(&page->_mapcount, -1);
__free_page(page);
} }
batch = rcu_table_freelist_get(mm); }
if (!batch) {
smp_call_function(smp_sync, NULL, 1); void page_table_free_rcu(struct mmu_gather *tlb, unsigned long *table)
page_table_free(mm, table); {
goto out; struct mm_struct *mm;
struct page *page;
unsigned int bit, mask;
mm = tlb->mm;
#ifdef CONFIG_PGSTE
if (mm_has_pgste(mm)) {
table = (unsigned long *) (__pa(table) | FRAG_MASK);
tlb_remove_table(tlb, table);
return;
} }
bits = (mm->context.has_pgste) ? 3UL : 1UL; #endif
bits <<= (__pa(table) & (PAGE_SIZE - 1)) / 256 / sizeof(unsigned long); bit = 1 << ((__pa(table) & ~PAGE_MASK) / (PTRS_PER_PTE*sizeof(pte_t)));
page = pfn_to_page(__pa(table) >> PAGE_SHIFT); page = pfn_to_page(__pa(table) >> PAGE_SHIFT);
spin_lock_bh(&mm->context.list_lock); spin_lock_bh(&mm->context.list_lock);
/* Delayed freeing with rcu prevents reuse of pgtable fragments */ if ((atomic_read(&page->_mapcount) & FRAG_MASK) != FRAG_MASK)
list_del_init(&page->lru); list_del(&page->lru);
mask = atomic_xor_bits(&page->_mapcount, bit | (bit << 4));
if (mask & FRAG_MASK)
list_add_tail(&page->lru, &mm->context.pgtable_list);
spin_unlock_bh(&mm->context.list_lock); spin_unlock_bh(&mm->context.list_lock);
table = (unsigned long *)(((unsigned long) table) | bits); table = (unsigned long *) (__pa(table) | (bit << 4));
batch->table[batch->pgt_index++] = table; tlb_remove_table(tlb, table);
if (batch->pgt_index >= batch->crst_index)
rcu_table_freelist_finish();
out:
preempt_enable();
} }
void __tlb_remove_table(void *_table)
{
void *table = (void *)((unsigned long) _table & PAGE_MASK);
unsigned type = (unsigned long) _table & ~PAGE_MASK;
if (type)
__page_table_free_rcu(table, type);
else
free_pages((unsigned long) table, ALLOC_ORDER);
}
#endif
/* /*
* switch on pgstes for its userspace process (for kvm) * switch on pgstes for its userspace process (for kvm)
*/ */
@ -369,7 +315,7 @@ int s390_enable_sie(void)
return -EINVAL; return -EINVAL;
/* Do we have pgstes? if yes, we are done */ /* Do we have pgstes? if yes, we are done */
if (tsk->mm->context.has_pgste) if (mm_has_pgste(tsk->mm))
return 0; return 0;
/* lets check if we are allowed to replace the mm */ /* lets check if we are allowed to replace the mm */

6
drivers/s390/cio/qdio_main.c
View File

@ -416,7 +416,7 @@ static void process_buffer_error(struct qdio_q *q, int count)
/* special handling for no target buffer empty */ /* special handling for no target buffer empty */
if ((!q->is_input_q && if ((!q->is_input_q &&
(q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) { (q->sbal[q->first_to_check]->element[15].sflags) == 0x10)) {
qperf_inc(q, target_full); qperf_inc(q, target_full);
DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x", DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x",
q->first_to_check); q->first_to_check);
@ -427,8 +427,8 @@ static void process_buffer_error(struct qdio_q *q, int count)
DBF_ERROR((q->is_input_q) ? "IN:%2d" : "OUT:%2d", q->nr); DBF_ERROR((q->is_input_q) ? "IN:%2d" : "OUT:%2d", q->nr);
DBF_ERROR("FTC:%3d C:%3d", q->first_to_check, count); DBF_ERROR("FTC:%3d C:%3d", q->first_to_check, count);
DBF_ERROR("F14:%2x F15:%2x", DBF_ERROR("F14:%2x F15:%2x",
q->sbal[q->first_to_check]->element[14].flags & 0xff, q->sbal[q->first_to_check]->element[14].sflags,
q->sbal[q->first_to_check]->element[15].flags & 0xff); q->sbal[q->first_to_check]->element[15].sflags);
/* /*
* Interrupts may be avoided as long as the error is present * Interrupts may be avoided as long as the error is present

2
drivers/s390/net/qeth_core.h
View File

@ -361,7 +361,7 @@ enum qeth_header_ids {
static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
{ {
return (sbale->flags & SBAL_FLAGS_LAST_ENTRY); return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
} }
enum qeth_qdio_buffer_states { enum qeth_qdio_buffer_states {

57
drivers/s390/net/qeth_core_main.c
View File

@ -890,7 +890,7 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct sk_buff *skb; struct sk_buff *skb;
/* is PCI flag set on buffer? */ /* is PCI flag set on buffer? */
if (buf->buffer->element[0].flags & 0x40) if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
atomic_dec(&queue->set_pci_flags_count); atomic_dec(&queue->set_pci_flags_count);
skb = skb_dequeue(&buf->skb_list); skb = skb_dequeue(&buf->skb_list);
@ -906,9 +906,11 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
buf->is_header[i] = 0; buf->is_header[i] = 0;
buf->buffer->element[i].length = 0; buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL; buf->buffer->element[i].addr = NULL;
buf->buffer->element[i].flags = 0; buf->buffer->element[i].eflags = 0;
buf->buffer->element[i].sflags = 0;
} }
buf->buffer->element[15].flags = 0; buf->buffer->element[15].eflags = 0;
buf->buffer->element[15].sflags = 0;
buf->next_element_to_fill = 0; buf->next_element_to_fill = 0;
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
} }
@ -2368,9 +2370,10 @@ static int qeth_init_input_buffer(struct qeth_card *card,
buf->buffer->element[i].length = PAGE_SIZE; buf->buffer->element[i].length = PAGE_SIZE;
buf->buffer->element[i].addr = pool_entry->elements[i]; buf->buffer->element[i].addr = pool_entry->elements[i];
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY; buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
else else
buf->buffer->element[i].flags = 0; buf->buffer->element[i].eflags = 0;
buf->buffer->element[i].sflags = 0;
} }
return 0; return 0;
} }
@ -2718,11 +2721,11 @@ int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
if (qdio_error) { if (qdio_error) {
QETH_CARD_TEXT(card, 2, dbftext); QETH_CARD_TEXT(card, 2, dbftext);
QETH_CARD_TEXT_(card, 2, " F15=%02X", QETH_CARD_TEXT_(card, 2, " F15=%02X",
buf->element[15].flags & 0xff); buf->element[15].sflags);
QETH_CARD_TEXT_(card, 2, " F14=%02X", QETH_CARD_TEXT_(card, 2, " F14=%02X",
buf->element[14].flags & 0xff); buf->element[14].sflags);
QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
if ((buf->element[15].flags & 0xff) == 0x12) { if ((buf->element[15].sflags) == 0x12) {
card->stats.rx_dropped++; card->stats.rx_dropped++;
return 0; return 0;
} else } else
@ -2798,7 +2801,7 @@ EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
static int qeth_handle_send_error(struct qeth_card *card, static int qeth_handle_send_error(struct qeth_card *card,
struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
{ {
int sbalf15 = buffer->buffer->element[15].flags & 0xff; int sbalf15 = buffer->buffer->element[15].sflags;
QETH_CARD_TEXT(card, 6, "hdsnderr"); QETH_CARD_TEXT(card, 6, "hdsnderr");
if (card->info.type == QETH_CARD_TYPE_IQD) { if (card->info.type == QETH_CARD_TYPE_IQD) {
@ -2907,8 +2910,8 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
for (i = index; i < index + count; ++i) { for (i = index; i < index + count; ++i) {
buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]; buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
buf->buffer->element[buf->next_element_to_fill - 1].flags |= buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
SBAL_FLAGS_LAST_ENTRY; SBAL_EFLAGS_LAST_ENTRY;
if (queue->card->info.type == QETH_CARD_TYPE_IQD) if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue; continue;
@ -2921,7 +2924,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
/* it's likely that we'll go to packing /* it's likely that we'll go to packing
* mode soon */ * mode soon */
atomic_inc(&queue->set_pci_flags_count); atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40; buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
} }
} else { } else {
if (!atomic_read(&queue->set_pci_flags_count)) { if (!atomic_read(&queue->set_pci_flags_count)) {
@ -2934,7 +2937,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
* further send was requested by the stack * further send was requested by the stack
*/ */
atomic_inc(&queue->set_pci_flags_count); atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40; buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
} }
} }
} }
@ -3180,20 +3183,20 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
if (!length) { if (!length) {
if (first_lap) if (first_lap)
if (skb_shinfo(skb)->nr_frags) if (skb_shinfo(skb)->nr_frags)
buffer->element[element].flags = buffer->element[element].eflags =
SBAL_FLAGS_FIRST_FRAG; SBAL_EFLAGS_FIRST_FRAG;
else else
buffer->element[element].flags = 0; buffer->element[element].eflags = 0;
else else
buffer->element[element].flags = buffer->element[element].eflags =
SBAL_FLAGS_MIDDLE_FRAG; SBAL_EFLAGS_MIDDLE_FRAG;
} else { } else {
if (first_lap) if (first_lap)
buffer->element[element].flags = buffer->element[element].eflags =
SBAL_FLAGS_FIRST_FRAG; SBAL_EFLAGS_FIRST_FRAG;
else else
buffer->element[element].flags = buffer->element[element].eflags =
SBAL_FLAGS_MIDDLE_FRAG; SBAL_EFLAGS_MIDDLE_FRAG;
} }
data += length_here; data += length_here;
element++; element++;
@ -3205,12 +3208,12 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
buffer->element[element].addr = (char *)page_to_phys(frag->page) buffer->element[element].addr = (char *)page_to_phys(frag->page)
+ frag->page_offset; + frag->page_offset;
buffer->element[element].length = frag->size; buffer->element[element].length = frag->size;
buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG; buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
element++; element++;
} }
if (buffer->element[element - 1].flags) if (buffer->element[element - 1].eflags)
buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG; buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
*next_element_to_fill = element; *next_element_to_fill = element;
} }
@ -3234,7 +3237,7 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
/*fill first buffer entry only with header information */ /*fill first buffer entry only with header information */
buffer->element[element].addr = skb->data; buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len; buffer->element[element].length = hdr_len;
buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG; buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->next_element_to_fill++; buf->next_element_to_fill++;
skb->data += hdr_len; skb->data += hdr_len;
skb->len -= hdr_len; skb->len -= hdr_len;
@ -3246,7 +3249,7 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
buffer->element[element].addr = hdr; buffer->element[element].addr = hdr;
buffer->element[element].length = sizeof(struct qeth_hdr) + buffer->element[element].length = sizeof(struct qeth_hdr) +
hd_len; hd_len;
buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG; buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->is_header[element] = 1; buf->is_header[element] = 1;
buf->next_element_to_fill++; buf->next_element_to_fill++;
} }

45
drivers/s390/scsi/zfcp_fsf.c
View File

@ -640,7 +640,7 @@ static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
} }
static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
u32 fsf_cmd, u32 sbtype, u32 fsf_cmd, u8 sbtype,
mempool_t *pool) mempool_t *pool)
{ {
struct zfcp_adapter *adapter = qdio->adapter; struct zfcp_adapter *adapter = qdio->adapter;
@ -841,7 +841,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
if (zfcp_qdio_sbal_get(qdio)) if (zfcp_qdio_sbal_get(qdio))
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.scsi_abort); qdio->adapter->pool.scsi_abort);
if (IS_ERR(req)) { if (IS_ERR(req)) {
req = NULL; req = NULL;
@ -1012,7 +1012,7 @@ int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
SBAL_FLAGS0_TYPE_WRITE_READ, pool); SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
if (IS_ERR(req)) { if (IS_ERR(req)) {
ret = PTR_ERR(req); ret = PTR_ERR(req);
@ -1110,7 +1110,7 @@ int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
SBAL_FLAGS0_TYPE_WRITE_READ, NULL); SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
if (IS_ERR(req)) { if (IS_ERR(req)) {
ret = PTR_ERR(req); ret = PTR_ERR(req);
@ -1156,7 +1156,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1198,7 +1198,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
goto out_unlock; goto out_unlock;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
SBAL_FLAGS0_TYPE_READ, NULL); SBAL_SFLAGS0_TYPE_READ, NULL);
if (IS_ERR(req)) { if (IS_ERR(req)) {
retval = PTR_ERR(req); retval = PTR_ERR(req);
@ -1250,7 +1250,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1296,7 +1296,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
goto out_unlock; goto out_unlock;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
SBAL_FLAGS0_TYPE_READ, NULL); SBAL_SFLAGS0_TYPE_READ, NULL);
if (IS_ERR(req)) { if (IS_ERR(req)) {
retval = PTR_ERR(req); retval = PTR_ERR(req);
@ -1412,7 +1412,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1478,7 +1478,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1553,7 +1553,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1606,7 +1606,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1698,7 +1698,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1812,7 +1812,7 @@ int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
adapter->pool.erp_req); adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -1901,7 +1901,7 @@ int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
SBAL_FLAGS0_TYPE_READ, SBAL_SFLAGS0_TYPE_READ,
qdio->adapter->pool.erp_req); qdio->adapter->pool.erp_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -2161,7 +2161,7 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
{ {
struct zfcp_fsf_req *req; struct zfcp_fsf_req *req;
struct fcp_cmnd *fcp_cmnd; struct fcp_cmnd *fcp_cmnd;
unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
int real_bytes, retval = -EIO, dix_bytes = 0; int real_bytes, retval = -EIO, dix_bytes = 0;
struct scsi_device *sdev = scsi_cmnd->device; struct scsi_device *sdev = scsi_cmnd->device;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
@ -2181,7 +2181,7 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
} }
if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
sbtype = SBAL_FLAGS0_TYPE_WRITE; sbtype = SBAL_SFLAGS0_TYPE_WRITE;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
sbtype, adapter->pool.scsi_req); sbtype, adapter->pool.scsi_req);
@ -2280,7 +2280,7 @@ struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
goto out; goto out;
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
SBAL_FLAGS0_TYPE_WRITE, SBAL_SFLAGS0_TYPE_WRITE,
qdio->adapter->pool.scsi_req); qdio->adapter->pool.scsi_req);
if (IS_ERR(req)) { if (IS_ERR(req)) {
@ -2328,17 +2328,18 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
struct zfcp_qdio *qdio = adapter->qdio; struct zfcp_qdio *qdio = adapter->qdio;
struct zfcp_fsf_req *req = NULL; struct zfcp_fsf_req *req = NULL;
struct fsf_qtcb_bottom_support *bottom; struct fsf_qtcb_bottom_support *bottom;
int direction, retval = -EIO, bytes; int retval = -EIO, bytes;
u8 direction;
if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
return ERR_PTR(-EOPNOTSUPP); return ERR_PTR(-EOPNOTSUPP);
switch (fsf_cfdc->command) { switch (fsf_cfdc->command) {
case FSF_QTCB_DOWNLOAD_CONTROL_FILE: case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
direction = SBAL_FLAGS0_TYPE_WRITE; direction = SBAL_SFLAGS0_TYPE_WRITE;
break; break;
case FSF_QTCB_UPLOAD_CONTROL_FILE: case FSF_QTCB_UPLOAD_CONTROL_FILE:
direction = SBAL_FLAGS0_TYPE_READ; direction = SBAL_SFLAGS0_TYPE_READ;
break; break;
default: default:
return ERR_PTR(-EINVAL); return ERR_PTR(-EINVAL);
@ -2413,7 +2414,7 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
fsf_req->qdio_req.sbal_response = sbal_idx; fsf_req->qdio_req.sbal_response = sbal_idx;
zfcp_fsf_req_complete(fsf_req); zfcp_fsf_req_complete(fsf_req);
if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
break; break;
} }
} }

11
drivers/s390/scsi/zfcp_qdio.c
View File

@ -124,7 +124,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
/* set last entry flag in current SBALE of current SBAL */ /* set last entry flag in current SBALE of current SBAL */
sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale = zfcp_qdio_sbale_curr(qdio, q_req);
sbale->flags |= SBAL_FLAGS_LAST_ENTRY; sbale->eflags |= SBAL_EFLAGS_LAST_ENTRY;
/* don't exceed last allowed SBAL */ /* don't exceed last allowed SBAL */
if (q_req->sbal_last == q_req->sbal_limit) if (q_req->sbal_last == q_req->sbal_limit)
@ -132,7 +132,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
/* set chaining flag in first SBALE of current SBAL */ /* set chaining flag in first SBALE of current SBAL */
sbale = zfcp_qdio_sbale_req(qdio, q_req); sbale = zfcp_qdio_sbale_req(qdio, q_req);
sbale->flags |= SBAL_FLAGS0_MORE_SBALS; sbale->sflags |= SBAL_SFLAGS0_MORE_SBALS;
/* calculate index of next SBAL */ /* calculate index of next SBAL */
q_req->sbal_last++; q_req->sbal_last++;
@ -147,7 +147,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
/* set storage-block type for new SBAL */ /* set storage-block type for new SBAL */
sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale = zfcp_qdio_sbale_curr(qdio, q_req);
sbale->flags |= q_req->sbtype; sbale->sflags |= q_req->sbtype;
return sbale; return sbale;
} }
@ -177,7 +177,7 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
/* set storage-block type for this request */ /* set storage-block type for this request */
sbale = zfcp_qdio_sbale_req(qdio, q_req); sbale = zfcp_qdio_sbale_req(qdio, q_req);
sbale->flags |= q_req->sbtype; sbale->sflags |= q_req->sbtype;
for (; sg; sg = sg_next(sg)) { for (; sg; sg = sg_next(sg)) {
sbale = zfcp_qdio_sbale_next(qdio, q_req); sbale = zfcp_qdio_sbale_next(qdio, q_req);
@ -384,7 +384,8 @@ int zfcp_qdio_open(struct zfcp_qdio *qdio)
for (cc = 0; cc < QDIO_MAX_BUFFERS_PER_Q; cc++) { for (cc = 0; cc < QDIO_MAX_BUFFERS_PER_Q; cc++) {
sbale = &(qdio->res_q[cc]->element[0]); sbale = &(qdio->res_q[cc]->element[0]);
sbale->length = 0; sbale->length = 0;
sbale->flags = SBAL_FLAGS_LAST_ENTRY; sbale->eflags = SBAL_EFLAGS_LAST_ENTRY;
sbale->sflags = 0;
sbale->addr = NULL; sbale->addr = NULL;
} }

9
drivers/s390/scsi/zfcp_qdio.h
View File

@ -67,7 +67,7 @@ struct zfcp_qdio {
* @qdio_outb_usage: usage of outbound queue * @qdio_outb_usage: usage of outbound queue
*/ */
struct zfcp_qdio_req { struct zfcp_qdio_req {
u32 sbtype; u8 sbtype;
u8 sbal_number; u8 sbal_number;
u8 sbal_first; u8 sbal_first;
u8 sbal_last; u8 sbal_last;
@ -116,7 +116,7 @@ zfcp_qdio_sbale_curr(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
*/ */
static inline static inline
void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req, void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
unsigned long req_id, u32 sbtype, void *data, u32 len) unsigned long req_id, u8 sbtype, void *data, u32 len)
{ {
struct qdio_buffer_element *sbale; struct qdio_buffer_element *sbale;
int count = min(atomic_read(&qdio->req_q_free), int count = min(atomic_read(&qdio->req_q_free),
@ -131,7 +131,8 @@ void zfcp_qdio_req_init(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
sbale = zfcp_qdio_sbale_req(qdio, q_req); sbale = zfcp_qdio_sbale_req(qdio, q_req);
sbale->addr = (void *) req_id; sbale->addr = (void *) req_id;
sbale->flags = SBAL_FLAGS0_COMMAND | sbtype; sbale->eflags = 0;
sbale->sflags = SBAL_SFLAGS0_COMMAND | sbtype;
if (unlikely(!data)) if (unlikely(!data))
return; return;
@ -173,7 +174,7 @@ void zfcp_qdio_set_sbale_last(struct zfcp_qdio *qdio,
struct qdio_buffer_element *sbale; struct qdio_buffer_element *sbale;
sbale = zfcp_qdio_sbale_curr(qdio, q_req); sbale = zfcp_qdio_sbale_curr(qdio, q_req);
sbale->flags |= SBAL_FLAGS_LAST_ENTRY; sbale->eflags |= SBAL_EFLAGS_LAST_ENTRY;
} }
/** /**