summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/sparc64/kernel/pci_iommu.c363
-rw-r--r--arch/sparc64/kernel/pci_psycho.c44
-rw-r--r--arch/sparc64/kernel/pci_sabre.c39
-rw-r--r--arch/sparc64/kernel/pci_schizo.c57
-rw-r--r--arch/sparc64/kernel/smp.c7
-rw-r--r--arch/sparc64/mm/ultra.S16
-rw-r--r--arch/sparc64/prom/misc.c12
-rw-r--r--drivers/scsi/qlogicpti.c39
-rw-r--r--include/asm-sparc64/pbm.h30
9 files changed, 215 insertions, 392 deletions
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index 425c60cfea19..a11910be1013 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -49,12 +49,6 @@ static void __iommu_flushall(struct pci_iommu *iommu)
/* Ensure completion of previous PIO writes. */
(void) pci_iommu_read(iommu->write_complete_reg);
-
- /* Now update everyone's flush point. */
- for (entry = 0; entry < PBM_NCLUSTERS; entry++) {
- iommu->alloc_info[entry].flush =
- iommu->alloc_info[entry].next;
- }
}
#define IOPTE_CONSISTENT(CTX) \
@@ -80,120 +74,117 @@ static void inline iopte_make_dummy(struct pci_iommu *iommu, iopte_t *iopte)
iopte_val(*iopte) = val;
}
-void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize)
+/* Based largely upon the ppc64 iommu allocator. */
+static long pci_arena_alloc(struct pci_iommu *iommu, unsigned long npages)
{
- int i;
-
- tsbsize /= sizeof(iopte_t);
-
- for (i = 0; i < tsbsize; i++)
- iopte_make_dummy(iommu, &iommu->page_table[i]);
-}
-
-static iopte_t *alloc_streaming_cluster(struct pci_iommu *iommu, unsigned long npages)
-{
- iopte_t *iopte, *limit, *first;
- unsigned long cnum, ent, flush_point;
-
- cnum = 0;
- while ((1UL << cnum) < npages)
- cnum++;
- iopte = (iommu->page_table +
- (cnum << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS)));
-
- if (cnum == 0)
- limit = (iommu->page_table +
- iommu->lowest_consistent_map);
- else
- limit = (iopte +
- (1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS)));
-
- iopte += ((ent = iommu->alloc_info[cnum].next) << cnum);
- flush_point = iommu->alloc_info[cnum].flush;
-
- first = iopte;
- for (;;) {
- if (IOPTE_IS_DUMMY(iommu, iopte)) {
- if ((iopte + (1 << cnum)) >= limit)
- ent = 0;
- else
- ent = ent + 1;
- iommu->alloc_info[cnum].next = ent;
- if (ent == flush_point)
- __iommu_flushall(iommu);
- break;
+ struct pci_iommu_arena *arena = &iommu->arena;
+ unsigned long n, i, start, end, limit;
+ int pass;
+
+ limit = arena->limit;
+ start = arena->hint;
+ pass = 0;
+
+again:
+ n = find_next_zero_bit(arena->map, limit, start);
+ end = n + npages;
+ if (unlikely(end >= limit)) {
+ if (likely(pass < 1)) {
+ limit = start;
+ start = 0;
+ __iommu_flushall(iommu);
+ pass++;
+ goto again;
+ } else {
+ /* Scanned the whole thing, give up. */
+ return -1;
}
- iopte += (1 << cnum);
- ent++;
- if (iopte >= limit) {
- iopte = (iommu->page_table +
- (cnum <<
- (iommu->page_table_sz_bits - PBM_LOGCLUSTERS)));
- ent = 0;
+ }
+
+ for (i = n; i < end; i++) {
+ if (test_bit(i, arena->map)) {
+ start = i + 1;
+ goto again;
}
- if (ent == flush_point)
- __iommu_flushall(iommu);
- if (iopte == first)
- goto bad;
}
- /* I've got your streaming cluster right here buddy boy... */
- return iopte;
+ for (i = n; i < end; i++)
+ __set_bit(i, arena->map);
-bad:
- printk(KERN_EMERG "pci_iommu: alloc_streaming_cluster of npages(%ld) failed!\n",
- npages);
- return NULL;
+ arena->hint = end;
+
+ return n;
}
-static void free_streaming_cluster(struct pci_iommu *iommu, dma_addr_t base,
- unsigned long npages, unsigned long ctx)
+static void pci_arena_free(struct pci_iommu_arena *arena, unsigned long base, unsigned long npages)
{
- unsigned long cnum, ent;
+ unsigned long i;
- cnum = 0;
- while ((1UL << cnum) < npages)
- cnum++;
+ for (i = base; i < (base + npages); i++)
+ __clear_bit(i, arena->map);
+}
- ent = (base << (32 - IO_PAGE_SHIFT + PBM_LOGCLUSTERS - iommu->page_table_sz_bits))
- >> (32 + PBM_LOGCLUSTERS + cnum - iommu->page_table_sz_bits);
+void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask)
+{
+ unsigned long i, tsbbase, order, sz, num_tsb_entries;
+
+ num_tsb_entries = tsbsize / sizeof(iopte_t);
+
+ /* Setup initial software IOMMU state. */
+ spin_lock_init(&iommu->lock);
+ iommu->ctx_lowest_free = 1;
+ iommu->page_table_map_base = dma_offset;
+ iommu->dma_addr_mask = dma_addr_mask;
+
+ /* Allocate and initialize the free area map. */
+ sz = num_tsb_entries / 8;
+ sz = (sz + 7UL) & ~7UL;
+ iommu->arena.map = kmalloc(sz, GFP_KERNEL);
+ if (!iommu->arena.map) {
+ prom_printf("PCI_IOMMU: Error, kmalloc(arena.map) failed.\n");
+ prom_halt();
+ }
+ memset(iommu->arena.map, 0, sz);
+ iommu->arena.limit = num_tsb_entries;
- /* If the global flush might not have caught this entry,
- * adjust the flush point such that we will flush before
- * ever trying to reuse it.
+ /* Allocate and initialize the dummy page which we
+ * set inactive IO PTEs to point to.
*/
-#define between(X,Y,Z) (((Z) - (Y)) >= ((X) - (Y)))
- if (between(ent, iommu->alloc_info[cnum].next, iommu->alloc_info[cnum].flush))
- iommu->alloc_info[cnum].flush = ent;
-#undef between
+ iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
+ if (!iommu->dummy_page) {
+ prom_printf("PCI_IOMMU: Error, gfp(dummy_page) failed.\n");
+ prom_halt();
+ }
+ memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
+ iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
+
+ /* Now allocate and setup the IOMMU page table itself. */
+ order = get_order(tsbsize);
+ tsbbase = __get_free_pages(GFP_KERNEL, order);
+ if (!tsbbase) {
+ prom_printf("PCI_IOMMU: Error, gfp(tsb) failed.\n");
+ prom_halt();
+ }
+ iommu->page_table = (iopte_t *)tsbbase;
+
+ for (i = 0; i < num_tsb_entries; i++)
+ iopte_make_dummy(iommu, &iommu->page_table[i]);
}
-/* We allocate consistent mappings from the end of cluster zero. */
-static iopte_t *alloc_consistent_cluster(struct pci_iommu *iommu, unsigned long npages)
+static inline iopte_t *alloc_npages(struct pci_iommu *iommu, unsigned long npages)
{
- iopte_t *iopte;
+ long entry;
- iopte = iommu->page_table + (1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS));
- while (iopte > iommu->page_table) {
- iopte--;
- if (IOPTE_IS_DUMMY(iommu, iopte)) {
- unsigned long tmp = npages;
+ entry = pci_arena_alloc(iommu, npages);
+ if (unlikely(entry < 0))
+ return NULL;
- while (--tmp) {
- iopte--;
- if (!IOPTE_IS_DUMMY(iommu, iopte))
- break;
- }
- if (tmp == 0) {
- u32 entry = (iopte - iommu->page_table);
+ return iommu->page_table + entry;
+}
- if (entry < iommu->lowest_consistent_map)
- iommu->lowest_consistent_map = entry;
- return iopte;
- }
- }
- }
- return NULL;
+static inline void free_npages(struct pci_iommu *iommu, dma_addr_t base, unsigned long npages)
+{
+ pci_arena_free(&iommu->arena, base >> IO_PAGE_SHIFT, npages);
}
static int iommu_alloc_ctx(struct pci_iommu *iommu)
@@ -233,7 +224,7 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_ad
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
iopte_t *iopte;
- unsigned long flags, order, first_page, ctx;
+ unsigned long flags, order, first_page;
void *ret;
int npages;
@@ -251,9 +242,10 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_ad
iommu = pcp->pbm->iommu;
spin_lock_irqsave(&iommu->lock, flags);
- iopte = alloc_consistent_cluster(iommu, size >> IO_PAGE_SHIFT);
- if (iopte == NULL) {
- spin_unlock_irqrestore(&iommu->lock, flags);
+ iopte = alloc_npages(iommu, size >> IO_PAGE_SHIFT);
+ spin_unlock_irqrestore(&iommu->lock, flags);
+
+ if (unlikely(iopte == NULL)) {
free_pages(first_page, order);
return NULL;
}
@@ -262,31 +254,15 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_ad
((iopte - iommu->page_table) << IO_PAGE_SHIFT));
ret = (void *) first_page;
npages = size >> IO_PAGE_SHIFT;
- ctx = 0;
- if (iommu->iommu_ctxflush)
- ctx = iommu_alloc_ctx(iommu);
first_page = __pa(first_page);
while (npages--) {
- iopte_val(*iopte) = (IOPTE_CONSISTENT(ctx) |
+ iopte_val(*iopte) = (IOPTE_CONSISTENT(0UL) |
IOPTE_WRITE |
(first_page & IOPTE_PAGE));
iopte++;
first_page += IO_PAGE_SIZE;
}
- {
- int i;
- u32 daddr = *dma_addrp;
-
- npages = size >> IO_PAGE_SHIFT;
- for (i = 0; i < npages; i++) {
- pci_iommu_write(iommu->iommu_flush, daddr);
- daddr += IO_PAGE_SIZE;
- }
- }
-
- spin_unlock_irqrestore(&iommu->lock, flags);
-
return ret;
}
@@ -296,7 +272,7 @@ void pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_
struct pcidev_cookie *pcp;
struct pci_iommu *iommu;
iopte_t *iopte;
- unsigned long flags, order, npages, i, ctx;
+ unsigned long flags, order, npages;
npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
pcp = pdev->sysdata;
@@ -306,46 +282,7 @@ void pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_
spin_lock_irqsave(&iommu->lock, flags);
- if ((iopte - iommu->page_table) ==
- iommu->lowest_consistent_map) {
- iopte_t *walk = iopte + npages;
- iopte_t *limit;
-
- limit = (iommu->page_table +
- (1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS)));
- while (walk < limit) {
- if (!IOPTE_IS_DUMMY(iommu, walk))
- break;
- walk++;
- }
- iommu->lowest_consistent_map =
- (walk - iommu->page_table);
- }
-
- /* Data for consistent mappings cannot enter the streaming
- * buffers, so we only need to update the TSB. We flush
- * the IOMMU here as well to prevent conflicts with the
- * streaming mapping deferred tlb flush scheme.
- */
-
- ctx = 0;
- if (iommu->iommu_ctxflush)
- ctx = (iopte_val(*iopte) & IOPTE_CONTEXT) >> 47UL;
-
- for (i = 0; i < npages; i++, iopte++)
- iopte_make_dummy(iommu, iopte);
-
- if (iommu->iommu_ctxflush) {
- pci_iommu_write(iommu->iommu_ctxflush, ctx);
- } else {
- for (i = 0; i < npages; i++) {
- u32 daddr = dvma + (i << IO_PAGE_SHIFT);
-
- pci_iommu_write(iommu->iommu_flush, daddr);
- }
- }
-
- iommu_free_ctx(iommu, ctx);
+ free_npages(iommu, dvma, npages);
spin_unlock_irqrestore(&iommu->lock, flags);
@@ -372,25 +309,27 @@ dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direct
iommu = pcp->pbm->iommu;
strbuf = &pcp->pbm->stc;
- if (direction == PCI_DMA_NONE)
- BUG();
+ if (unlikely(direction == PCI_DMA_NONE))
+ goto bad_no_ctx;
oaddr = (unsigned long)ptr;
npages = IO_PAGE_ALIGN(oaddr + sz) - (oaddr & IO_PAGE_MASK);
npages >>= IO_PAGE_SHIFT;
spin_lock_irqsave(&iommu->lock, flags);
+ base = alloc_npages(iommu, npages);
+ ctx = 0;
+ if (iommu->iommu_ctxflush)
+ ctx = iommu_alloc_ctx(iommu);
+ spin_unlock_irqrestore(&iommu->lock, flags);
- base = alloc_streaming_cluster(iommu, npages);
- if (base == NULL)
+ if (unlikely(!base))
goto bad;
+
bus_addr = (iommu->page_table_map_base +
((base - iommu->page_table) << IO_PAGE_SHIFT));
ret = bus_addr | (oaddr & ~IO_PAGE_MASK);
base_paddr = __pa(oaddr & IO_PAGE_MASK);
- ctx = 0;
- if (iommu->iommu_ctxflush)
- ctx = iommu_alloc_ctx(iommu);
if (strbuf->strbuf_enabled)
iopte_protection = IOPTE_STREAMING(ctx);
else
@@ -401,12 +340,13 @@ dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direct
for (i = 0; i < npages; i++, base++, base_paddr += IO_PAGE_SIZE)
iopte_val(*base) = iopte_protection | base_paddr;
- spin_unlock_irqrestore(&iommu->lock, flags);
-
return ret;
bad:
- spin_unlock_irqrestore(&iommu->lock, flags);
+ iommu_free_ctx(iommu, ctx);
+bad_no_ctx:
+ if (printk_ratelimit())
+ WARN_ON(1);
return PCI_DMA_ERROR_CODE;
}
@@ -481,10 +421,13 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
struct pci_iommu *iommu;
struct pci_strbuf *strbuf;
iopte_t *base;
- unsigned long flags, npages, ctx;
+ unsigned long flags, npages, ctx, i;
- if (direction == PCI_DMA_NONE)
- BUG();
+ if (unlikely(direction == PCI_DMA_NONE)) {
+ if (printk_ratelimit())
+ WARN_ON(1);
+ return;
+ }
pcp = pdev->sysdata;
iommu = pcp->pbm->iommu;
@@ -510,13 +453,14 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
/* Step 1: Kick data out of streaming buffers if necessary. */
if (strbuf->strbuf_enabled)
- pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
+ pci_strbuf_flush(strbuf, iommu, bus_addr, ctx,
+ npages, direction);
- /* Step 2: Clear out first TSB entry. */
- iopte_make_dummy(iommu, base);
+ /* Step 2: Clear out TSB entries. */
+ for (i = 0; i < npages; i++)
+ iopte_make_dummy(iommu, base + i);
- free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
- npages, ctx);
+ free_npages(iommu, bus_addr - iommu->page_table_map_base, npages);
iommu_free_ctx(iommu, ctx);
@@ -621,6 +565,8 @@ int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int
pci_map_single(pdev,
(page_address(sglist->page) + sglist->offset),
sglist->length, direction);
+ if (unlikely(sglist->dma_address == PCI_DMA_ERROR_CODE))
+ return 0;
sglist->dma_length = sglist->length;
return 1;
}
@@ -629,21 +575,29 @@ int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int
iommu = pcp->pbm->iommu;
strbuf = &pcp->pbm->stc;
- if (direction == PCI_DMA_NONE)
- BUG();
+ if (unlikely(direction == PCI_DMA_NONE))
+ goto bad_no_ctx;
/* Step 1: Prepare scatter list. */
npages = prepare_sg(sglist, nelems);
- /* Step 2: Allocate a cluster. */
+ /* Step 2: Allocate a cluster and context, if necessary. */
spin_lock_irqsave(&iommu->lock, flags);
- base = alloc_streaming_cluster(iommu, npages);
+ base = alloc_npages(iommu, npages);
+ ctx = 0;
+ if (iommu->iommu_ctxflush)
+ ctx = iommu_alloc_ctx(iommu);
+
+ spin_unlock_irqrestore(&iommu->lock, flags);
+
if (base == NULL)
goto bad;
- dma_base = iommu->page_table_map_base + ((base - iommu->page_table) << IO_PAGE_SHIFT);
+
+ dma_base = iommu->page_table_map_base +
+ ((base - iommu->page_table) << IO_PAGE_SHIFT);
/* Step 3: Normalize DMA addresses. */
used = nelems;
@@ -656,30 +610,28 @@ int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int
}
used = nelems - used;
- /* Step 4: Choose a context if necessary. */
- ctx = 0;
- if (iommu->iommu_ctxflush)
- ctx = iommu_alloc_ctx(iommu);
-
- /* Step 5: Create the mappings. */
+ /* Step 4: Create the mappings. */
if (strbuf->strbuf_enabled)
iopte_protection = IOPTE_STREAMING(ctx);
else
iopte_protection = IOPTE_CONSISTENT(ctx);
if (direction != PCI_DMA_TODEVICE)
iopte_protection |= IOPTE_WRITE;
- fill_sg (base, sglist, used, nelems, iopte_protection);
+
+ fill_sg(base, sglist, used, nelems, iopte_protection);
+
#ifdef VERIFY_SG
verify_sglist(sglist, nelems, base, npages);
#endif
- spin_unlock_irqrestore(&iommu->lock, flags);
-
return used;
bad:
- spin_unlock_irqrestore(&iommu->lock, flags);
- return PCI_DMA_ERROR_CODE;
+ iommu_free_ctx(iommu, ctx);
+bad_no_ctx:
+ if (printk_ratelimit())
+ WARN_ON(1);
+ return 0;
}
/* Unmap a set of streaming mode DMA translations. */
@@ -692,8 +644,10 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
unsigned long flags, ctx, i, npages;
u32 bus_addr;
- if (direction == PCI_DMA_NONE)
- BUG();
+ if (unlikely(direction == PCI_DMA_NONE)) {
+ if (printk_ratelimit())
+ WARN_ON(1);
+ }
pcp = pdev->sysdata;
iommu = pcp->pbm->iommu;
@@ -705,7 +659,8 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
if (sglist[i].dma_length == 0)
break;
i--;
- npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length) - bus_addr) >> IO_PAGE_SHIFT;
+ npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length) -
+ bus_addr) >> IO_PAGE_SHIFT;
base = iommu->page_table +
((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
@@ -726,11 +681,11 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
if (strbuf->strbuf_enabled)
pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
- /* Step 2: Clear out first TSB entry. */
- iopte_make_dummy(iommu, base);
+ /* Step 2: Clear out the TSB entries. */
+ for (i = 0; i < npages; i++)
+ iopte_make_dummy(iommu, base + i);
- free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
- npages, ctx);
+ free_npages(iommu, bus_addr - iommu->page_table_map_base, npages);
iommu_free_ctx(iommu, ctx);
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 6ed1ef25e0ac..c03ed5f49d31 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -1207,13 +1207,9 @@ static void psycho_scan_bus(struct pci_controller_info *p)
static void psycho_iommu_init(struct pci_controller_info *p)
{
struct pci_iommu *iommu = p->pbm_A.iommu;
- unsigned long tsbbase, i;
+ unsigned long i;
u64 control;
- /* Setup initial software IOMMU state. */
- spin_lock_init(&iommu->lock);
- iommu->ctx_lowest_free = 1;
-
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;
iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE;
@@ -1240,40 +1236,10 @@ static void psycho_iommu_init(struct pci_controller_info *p)
/* Leave diag mode enabled for full-flushing done
* in pci_iommu.c
*/
+ pci_iommu_table_init(iommu, IO_TSB_SIZE, 0xc0000000, 0xffffffff);
- iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
- if (!iommu->dummy_page) {
- prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
- prom_halt();
- }
- memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
- iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
-
- /* Using assumed page size 8K with 128K entries we need 1MB iommu page
- * table (128K ioptes * 8 bytes per iopte). This is
- * page order 7 on UltraSparc.
- */
- tsbbase = __get_free_pages(GFP_KERNEL, get_order(IO_TSB_SIZE));
- if (!tsbbase) {
- prom_printf("PSYCHO_IOMMU: Error, gfp(tsb) failed.\n");
- prom_halt();
- }
- iommu->page_table = (iopte_t *)tsbbase;
- iommu->page_table_sz_bits = 17;
- iommu->page_table_map_base = 0xc0000000;
- iommu->dma_addr_mask = 0xffffffff;
- pci_iommu_table_init(iommu, IO_TSB_SIZE);
-
- /* We start with no consistent mappings. */
- iommu->lowest_consistent_map =
- 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
-
- for (i = 0; i < PBM_NCLUSTERS; i++) {
- iommu->alloc_info[i].flush = 0;
- iommu->alloc_info[i].next = 0;
- }
-
- psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE, __pa(tsbbase));
+ psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE,
+ __pa(iommu->page_table));
control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
@@ -1281,7 +1247,7 @@ static void psycho_iommu_init(struct pci_controller_info *p)
psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
/* If necessary, hook us up for starfire IRQ translations. */
- if(this_is_starfire)
+ if (this_is_starfire)
p->starfire_cookie = starfire_hookup(p->pbm_A.portid);
else
p->starfire_cookie = NULL;
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 0ee6bd5b9ac6..da8e1364194f 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1267,13 +1267,9 @@ static void sabre_iommu_init(struct pci_controller_info *p,
u32 dma_mask)
{
struct pci_iommu *iommu = p->pbm_A.iommu;
- unsigned long tsbbase, i, order;
+ unsigned long i;
u64 control;
- /* Setup initial software IOMMU state. */
- spin_lock_init(&iommu->lock);
- iommu->ctx_lowest_free = 1;
-
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL;
iommu->iommu_tsbbase = p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE;
@@ -1295,26 +1291,10 @@ static void sabre_iommu_init(struct pci_controller_info *p,
/* Leave diag mode enabled for full-flushing done
* in pci_iommu.c
*/
+ pci_iommu_table_init(iommu, tsbsize * 1024 * 8, dvma_offset, dma_mask);
- iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
- if (!iommu->dummy_page) {
- prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
- prom_halt();
- }
- memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
- iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
-
- tsbbase = __get_free_pages(GFP_KERNEL, order = get_order(tsbsize * 1024 * 8));
- if (!tsbbase) {
- prom_printf("SABRE_IOMMU: Error, gfp(tsb) failed.\n");
- prom_halt();
- }
- iommu->page_table = (iopte_t *)tsbbase;
- iommu->page_table_map_base = dvma_offset;
- iommu->dma_addr_mask = dma_mask;
- pci_iommu_table_init(iommu, PAGE_SIZE << order);
-
- sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE, __pa(tsbbase));
+ sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE,
+ __pa(iommu->page_table));
control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL);
control &= ~(SABRE_IOMMUCTRL_TSBSZ | SABRE_IOMMUCTRL_TBWSZ);
@@ -1322,11 +1302,9 @@ static void sabre_iommu_init(struct pci_controller_info *p,
switch(tsbsize) {
case 64:
control |= SABRE_IOMMU_TSBSZ_64K;
- iommu->page_table_sz_bits = 16;
break;
case 128:
control |= SABRE_IOMMU_TSBSZ_128K;
- iommu->page_table_sz_bits = 17;
break;
default:
prom_printf("iommu_init: Illegal TSB size %d\n", tsbsize);
@@ -1334,15 +1312,6 @@ static void sabre_iommu_init(struct pci_controller_info *p,
break;
}
sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control);
-
- /* We start with no consistent mappings. */
- iommu->lowest_consistent_map =
- 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
-
- for (i = 0; i < PBM_NCLUSTERS; i++) {
- iommu->alloc_info[i].flush = 0;
- iommu->alloc_info[i].next = 0;
- }
}
static void pbm_register_toplevel_resources(struct pci_controller_info *p,
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index cae5b61fe2f0..d8c4e0919b4e 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -1765,7 +1765,7 @@ static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
{
struct pci_iommu *iommu = pbm->iommu;
- unsigned long tsbbase, i, tagbase, database, order;
+ unsigned long i, tagbase, database;
u32 vdma[2], dma_mask;
u64 control;
int err, tsbsize;
@@ -1800,10 +1800,6 @@ static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
prom_halt();
};
- /* Setup initial software IOMMU state. */
- spin_lock_init(&iommu->lock);
- iommu->ctx_lowest_free = 1;
-
/* Register addresses, SCHIZO has iommu ctx flushing. */
iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
@@ -1832,56 +1828,9 @@ static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
/* Leave diag mode enabled for full-flushing done
* in pci_iommu.c
*/
+ pci_iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask);
- iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
- if (!iommu->dummy_page) {
- prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
- prom_halt();
- }
- memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
- iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
-
- /* Using assumed page size 8K with 128K entries we need 1MB iommu page
- * table (128K ioptes * 8 bytes per iopte). This is
- * page order 7 on UltraSparc.
- */
- order = get_order(tsbsize * 8 * 1024);
- tsbbase = __get_free_pages(GFP_KERNEL, order);
- if (!tsbbase) {
- prom_printf("%s: Error, gfp(tsb) failed.\n", pbm->name);
- prom_halt();
- }
-
- iommu->page_table = (iopte_t *)tsbbase;
- iommu->page_table_map_base = vdma[0];
- iommu->dma_addr_mask = dma_mask;
- pci_iommu_table_init(iommu, PAGE_SIZE << order);
-
- switch (tsbsize) {
- case 64:
- iommu->page_table_sz_bits = 16;
- break;
-
- case 128:
- iommu->page_table_sz_bits = 17;
- break;
-
- default:
- prom_printf("iommu_init: Illegal TSB size %d\n", tsbsize);
- prom_halt();
- break;
- };
-
- /* We start with no consistent mappings. */
- iommu->lowest_consistent_map =
- 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
-
- for (i = 0; i < PBM_NCLUSTERS; i++) {
- iommu->alloc_info[i].flush = 0;
- iommu->alloc_info[i].next = 0;
- }
-
- schizo_write(iommu->iommu_tsbbase, __pa(tsbbase));
+ schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table));
control = schizo_read(iommu->iommu_control);
control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 590df5a16f5a..b137fd63f5e1 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1001,13 +1001,6 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
preempt_enable();
}
-extern unsigned long xcall_promstop;
-
-void smp_promstop_others(void)
-{
- smp_cross_call(&xcall_promstop, 0, 0, 0);
-}
-
#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
#define prof_counter(__cpu) cpu_data(__cpu).counter
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 058b8126c1a7..e4c9151fa116 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -453,22 +453,6 @@ xcall_flush_dcache_page_spitfire: /* %g1 == physical page address
nop
nop
- .globl xcall_promstop
-xcall_promstop:
- rdpr %pstate, %g2
- wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
- rdpr %pil, %g2
- wrpr %g0, 15, %pil
- sethi %hi(109f), %g7
- b,pt %xcc, etrap_irq
-109: or %g7, %lo(109b), %g7
- flushw
- call prom_stopself
- nop
- /* We should not return, just spin if we do... */
-1: b,a,pt %xcc, 1b
- nop
-
.data
errata32_hwbug:
diff --git a/arch/sparc64/prom/misc.c b/arch/sparc64/prom/misc.c
index 9b895faf077b..87f5cfce23bb 100644
--- a/arch/sparc64/prom/misc.c
+++ b/arch/sparc64/prom/misc.c
@@ -68,19 +68,11 @@ void prom_cmdline(void)
local_irq_restore(flags);
}
-#ifdef CONFIG_SMP
-extern void smp_promstop_others(void);
-#endif
-
/* Drop into the prom, but completely terminate the program.
* No chance of continuing.
*/
void prom_halt(void)
{
-#ifdef CONFIG_SMP
- smp_promstop_others();
- udelay(8000);
-#endif
again:
p1275_cmd("exit", P1275_INOUT(0, 0));
goto again; /* PROM is out to get me -DaveM */
@@ -88,10 +80,6 @@ again:
void prom_halt_power_off(void)
{
-#ifdef CONFIG_SMP
- smp_promstop_others();
- udelay(8000);
-#endif
p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0));
/* if nothing else helps, we just halt */
diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c
index a917ab7475ac..1fd5fc6d0fe3 100644
--- a/drivers/scsi/qlogicpti.c
+++ b/drivers/scsi/qlogicpti.c
@@ -1119,6 +1119,36 @@ static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int
host->sg_tablesize = QLOGICPTI_MAX_SG(num_free);
}
+static unsigned int scsi_rbuf_get(struct scsi_cmnd *cmd, unsigned char **buf_out)
+{
+ unsigned char *buf;
+ unsigned int buflen;
+
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *) cmd->request_buffer;
+ buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+ buflen = sg->length;
+ } else {
+ buf = cmd->request_buffer;
+ buflen = cmd->request_bufflen;
+ }
+
+ *buf_out = buf;
+ return buflen;
+}
+
+static void scsi_rbuf_put(struct scsi_cmnd *cmd, unsigned char *buf)
+{
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *) cmd->request_buffer;
+ kunmap_atomic(buf - sg->offset, KM_IRQ0);
+ }
+}
+
/*
* Until we scan the entire bus with inquiries, go throught this fella...
*/
@@ -1145,11 +1175,9 @@ static void ourdone(struct scsi_cmnd *Cmnd)
int ok = host_byte(Cmnd->result) == DID_OK;
if (Cmnd->cmnd[0] == 0x12 && ok) {
unsigned char *iqd;
+ unsigned int iqd_len;
- if (Cmnd->use_sg != 0)
- BUG();
-
- iqd = ((unsigned char *)Cmnd->buffer);
+ iqd_len = scsi_rbuf_get(Cmnd, &iqd);
/* tags handled in midlayer */
/* enable sync mode? */
@@ -1163,6 +1191,9 @@ static void ourdone(struct scsi_cmnd *Cmnd)
if (iqd[7] & 0x20) {
qpti->dev_param[tgt].device_flags |= 0x20;
}
+
+ scsi_rbuf_put(Cmnd, iqd);
+
qpti->sbits |= (1 << tgt);
} else if (!ok) {
qpti->sbits |= (1 << tgt);
diff --git a/include/asm-sparc64/pbm.h b/include/asm-sparc64/pbm.h
index 38bbbccb4068..dd35a2c7798a 100644
--- a/include/asm-sparc64/pbm.h
+++ b/include/asm-sparc64/pbm.h
@@ -27,23 +27,27 @@
* PCI bus.
*/
-#define PBM_LOGCLUSTERS 3
-#define PBM_NCLUSTERS (1 << PBM_LOGCLUSTERS)
-
struct pci_controller_info;
/* This contains the software state necessary to drive a PCI
* controller's IOMMU.
*/
+struct pci_iommu_arena {
+ unsigned long *map;
+ unsigned int hint;
+ unsigned int limit;
+};
+
struct pci_iommu {
/* This protects the controller's IOMMU and all
* streaming buffers underneath.
*/
spinlock_t lock;
+ struct pci_iommu_arena arena;
+
/* IOMMU page table, a linear array of ioptes. */
iopte_t *page_table; /* The page table itself. */
- int page_table_sz_bits; /* log2 of ow many pages does it map? */
/* Base PCI memory space address where IOMMU mappings
* begin.
@@ -62,12 +66,6 @@ struct pci_iommu {
*/
unsigned long write_complete_reg;
- /* The lowest used consistent mapping entry. Since
- * we allocate consistent maps out of cluster 0 this
- * is relative to the beginning of closter 0.
- */
- u32 lowest_consistent_map;
-
/* In order to deal with some buggy third-party PCI bridges that
* do wrong prefetching, we never mark valid mappings as invalid.
* Instead we point them at this dummy page.
@@ -75,16 +73,6 @@ struct pci_iommu {
unsigned long dummy_page;
unsigned long dummy_page_pa;
- /* If PBM_NCLUSTERS is ever decreased to 4 or lower,
- * or if largest supported page_table_sz * 8K goes above
- * 2GB, you must increase the size of the type of
- * these counters. You have been duly warned. -DaveM
- */
- struct {
- u16 next;
- u16 flush;
- } alloc_info[PBM_NCLUSTERS];
-
/* CTX allocation. */
unsigned long ctx_lowest_free;
unsigned long ctx_bitmap[IOMMU_NUM_CTXS / (sizeof(unsigned long) * 8)];
@@ -102,7 +90,7 @@ struct pci_iommu {
u32 dma_addr_mask;
};
-extern void pci_iommu_table_init(struct pci_iommu *, int);
+extern void pci_iommu_table_init(struct pci_iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask);
/* This describes a PCI bus module's streaming buffer. */
struct pci_strbuf {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 15:56:48 +0000