#include "iommu_common.h"
-/* These should be allocated on an SMP_CACHE_BYTES
- * aligned boundary for optimal performance.
- *
- * On SYSIO, using an 8K page size we have 1GB of SBUS
- * DMA space mapped. We divide this space into equally
- * sized clusters. We allocate a DMA mapping from the
- * cluster that matches the order of the allocation, or
- * if the order is greater than the number of clusters,
- * we try to allocate from the last cluster.
- */
-
-#define NCLUSTERS 8UL
-#define ONE_GIG (1UL * 1024UL * 1024UL * 1024UL)
-#define CLUSTER_SIZE (ONE_GIG / NCLUSTERS)
-#define CLUSTER_MASK (CLUSTER_SIZE - 1)
-#define CLUSTER_NPAGES (CLUSTER_SIZE >> IO_PAGE_SHIFT)
#define MAP_BASE ((u32)0xc0000000)
-struct sbus_iommu {
-/*0x00*/spinlock_t lock;
-
-/*0x08*/iopte_t *page_table;
-/*0x10*/unsigned long strbuf_regs;
-/*0x18*/unsigned long iommu_regs;
-/*0x20*/unsigned long sbus_control_reg;
-
-/*0x28*/volatile unsigned long strbuf_flushflag;
-
- /* If NCLUSTERS is ever decresed to 4 or lower,
- * you must increase the size of the type of
- * these counters. You have been duly warned. -DaveM
- */
-/*0x30*/struct {
- u16 next;
- u16 flush;
- } alloc_info[NCLUSTERS];
-
- /* The lowest used consistent mapping entry. Since
- * we allocate consistent maps out of cluster 0 this
- * is relative to the beginning of closter 0.
- */
-/*0x50*/u32 lowest_consistent_map;
-};
-
/* Offsets from iommu_regs */
#define SYSIO_IOMMUREG_BASE 0x2400UL
#define IOMMU_CONTROL (0x2400UL - 0x2400UL) /* IOMMU control register */
#define IOMMU_DRAM_VALID (1UL << 30UL)
-static void __iommu_flushall(struct sbus_iommu *iommu)
-{
- unsigned long tag = iommu->iommu_regs + IOMMU_TAGDIAG;
- int entry;
-
- for (entry = 0; entry < 16; entry++) {
- upa_writeq(0, tag);
- tag += 8UL;
- }
- upa_readq(iommu->sbus_control_reg);
-
- for (entry = 0; entry < NCLUSTERS; entry++) {
- iommu->alloc_info[entry].flush =
- iommu->alloc_info[entry].next;
- }
-}
-
-static void iommu_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
-{
- while (npages--)
- upa_writeq(base + (npages << IO_PAGE_SHIFT),
- iommu->iommu_regs + IOMMU_FLUSH);
- upa_readq(iommu->sbus_control_reg);
-}
-
/* Offsets from strbuf_regs */
#define SYSIO_STRBUFREG_BASE 0x2800UL
#define STRBUF_CONTROL (0x2800UL - 0x2800UL) /* Control */
#define STRBUF_TAG_VALID 0x02UL
-static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages, int direction)
-{
- unsigned long n;
- int limit;
-
- n = npages;
- while (n--)
- upa_writeq(base + (n << IO_PAGE_SHIFT),
- iommu->strbuf_regs + STRBUF_PFLUSH);
-
- /* If the device could not have possibly put dirty data into
- * the streaming cache, no flush-flag synchronization needs
- * to be performed.
- */
- if (direction == SBUS_DMA_TODEVICE)
- return;
-
- iommu->strbuf_flushflag = 0UL;
-
- /* Whoopee cushion! */
- upa_writeq(__pa(&iommu->strbuf_flushflag),
- iommu->strbuf_regs + STRBUF_FSYNC);
- upa_readq(iommu->sbus_control_reg);
-
- limit = 100000;
- while (iommu->strbuf_flushflag == 0UL) {
- limit--;
- if (!limit)
- break;
- udelay(1);
- rmb();
- }
- if (!limit)
- printk(KERN_WARNING "sbus_strbuf_flush: flushflag timeout "
- "vaddr[%08x] npages[%ld]\n",
- base, npages);
-}
-
-static iopte_t *alloc_streaming_cluster(struct sbus_iommu *iommu, unsigned long npages)
-{
- iopte_t *iopte, *limit, *first, *cluster;
- unsigned long cnum, ent, nent, flush_point, found;
-
- cnum = 0;
- nent = 1;
- while ((1UL << cnum) < npages)
- cnum++;
- if(cnum >= NCLUSTERS) {
- nent = 1UL << (cnum - NCLUSTERS);
- cnum = NCLUSTERS - 1;
- }
- iopte = iommu->page_table + (cnum * CLUSTER_NPAGES);
-
- if (cnum == 0)
- limit = (iommu->page_table +
- iommu->lowest_consistent_map);
- else
- limit = (iopte + CLUSTER_NPAGES);
-
- iopte += ((ent = iommu->alloc_info[cnum].next) << cnum);
- flush_point = iommu->alloc_info[cnum].flush;
-
- first = iopte;
- cluster = NULL;
- found = 0;
- for (;;) {
- if (iopte_val(*iopte) == 0UL) {
- found++;
- if (!cluster)
- cluster = iopte;
- } else {
- /* Used cluster in the way */
- cluster = NULL;
- found = 0;
- }
-
- if (found == nent)
- break;
-
- iopte += (1 << cnum);
- ent++;
- if (iopte >= limit) {
- iopte = (iommu->page_table + (cnum * CLUSTER_NPAGES));
- ent = 0;
-
- /* Multiple cluster allocations must not wrap */
- cluster = NULL;
- found = 0;
- }
- if (ent == flush_point)
- __iommu_flushall(iommu);
- if (iopte == first)
- goto bad;
- }
-
- /* ent/iopte points to the last cluster entry we're going to use,
- * so save our place for the next allocation.
- */
- if ((iopte + (1 << cnum)) >= limit)
- ent = 0;
- else
- ent = ent + 1;
- iommu->alloc_info[cnum].next = ent;
- if (ent == flush_point)
- __iommu_flushall(iommu);
-
- /* I've got your streaming cluster right here buddy boy... */
- return cluster;
-
-bad:
- printk(KERN_EMERG "sbus: alloc_streaming_cluster of npages(%ld) failed!\n",
- npages);
- return NULL;
-}
-
-static void free_streaming_cluster(struct sbus_iommu *iommu, u32 base, unsigned long npages)
-{
- unsigned long cnum, ent, nent;
- iopte_t *iopte;
-
- cnum = 0;
- nent = 1;
- while ((1UL << cnum) < npages)
- cnum++;
- if(cnum >= NCLUSTERS) {
- nent = 1UL << (cnum - NCLUSTERS);
- cnum = NCLUSTERS - 1;
- }
- ent = (base & CLUSTER_MASK) >> (IO_PAGE_SHIFT + cnum);
- iopte = iommu->page_table + ((base - MAP_BASE) >> IO_PAGE_SHIFT);
- do {
- iopte_val(*iopte) = 0UL;
- iopte += 1 << cnum;
- } while(--nent);
-
- /* 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.
- */
-#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
-}
-
-/* We allocate consistent mappings from the end of cluster zero. */
-static iopte_t *alloc_consistent_cluster(struct sbus_iommu *iommu, unsigned long npages)
-{
- iopte_t *iopte;
-
- iopte = iommu->page_table + (1 * CLUSTER_NPAGES);
- while (iopte > iommu->page_table) {
- iopte--;
- if (!(iopte_val(*iopte) & IOPTE_VALID)) {
- unsigned long tmp = npages;
-
- while (--tmp) {
- iopte--;
- if (iopte_val(*iopte) & IOPTE_VALID)
- break;
- }
- if (tmp == 0) {
- u32 entry = (iopte - iommu->page_table);
-
- if (entry < iommu->lowest_consistent_map)
- iommu->lowest_consistent_map = entry;
- return iopte;
- }
- }
- }
- return NULL;
-}
-
-static void free_consistent_cluster(struct sbus_iommu *iommu, u32 base, unsigned long npages)
-{
- iopte_t *iopte = iommu->page_table + ((base - MAP_BASE) >> IO_PAGE_SHIFT);
-
- if ((iopte - iommu->page_table) == iommu->lowest_consistent_map) {
- iopte_t *walk = iopte + npages;
- iopte_t *limit;
-
- limit = iommu->page_table + CLUSTER_NPAGES;
- while (walk < limit) {
- if (iopte_val(*walk) != 0UL)
- break;
- walk++;
- }
- iommu->lowest_consistent_map =
- (walk - iommu->page_table);
- }
-
- while (npages--)
- *iopte++ = __iopte(0UL);
-}
-
-void *sbus_alloc_consistent(struct sbus_dev *sdev, size_t size, dma_addr_t *dvma_addr)
-{
- unsigned long order, first_page, flags;
- struct sbus_iommu *iommu;
- iopte_t *iopte;
- void *ret;
- int npages;
-
- if (size <= 0 || sdev == NULL || dvma_addr == NULL)
- return NULL;
-
- size = IO_PAGE_ALIGN(size);
- order = get_order(size);
- if (order >= 10)
- return NULL;
- first_page = __get_free_pages(GFP_KERNEL|__GFP_COMP, order);
- if (first_page == 0UL)
- return NULL;
- memset((char *)first_page, 0, PAGE_SIZE << order);
-
- iommu = sdev->bus->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);
- free_pages(first_page, order);
- return NULL;
- }
-
- /* Ok, we're committed at this point. */
- *dvma_addr = MAP_BASE + ((iopte - iommu->page_table) << IO_PAGE_SHIFT);
- ret = (void *) first_page;
- npages = size >> IO_PAGE_SHIFT;
- while (npages--) {
- *iopte++ = __iopte(IOPTE_VALID | IOPTE_CACHE | IOPTE_WRITE |
- (__pa(first_page) & IOPTE_PAGE));
- first_page += IO_PAGE_SIZE;
- }
- iommu_flush(iommu, *dvma_addr, size >> IO_PAGE_SHIFT);
- spin_unlock_irqrestore(&iommu->lock, flags);
-
- return ret;
-}
-
-void sbus_free_consistent(struct sbus_dev *sdev, size_t size, void *cpu, dma_addr_t dvma)
-{
- unsigned long order, npages;
- struct sbus_iommu *iommu;
-
- if (size <= 0 || sdev == NULL || cpu == NULL)
- return;
-
- npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
- iommu = sdev->bus->iommu;
-
- spin_lock_irq(&iommu->lock);
- free_consistent_cluster(iommu, dvma, npages);
- iommu_flush(iommu, dvma, npages);
- spin_unlock_irq(&iommu->lock);
-
- order = get_order(size);
- if (order < 10)
- free_pages((unsigned long)cpu, order);
-}
-
-dma_addr_t sbus_map_single(struct sbus_dev *sdev, void *ptr, size_t size, int dir)
-{
- struct sbus_iommu *iommu = sdev->bus->iommu;
- unsigned long npages, pbase, flags;
- iopte_t *iopte;
- u32 dma_base, offset;
- unsigned long iopte_bits;
-
- if (dir == SBUS_DMA_NONE)
- BUG();
-
- pbase = (unsigned long) ptr;
- offset = (u32) (pbase & ~IO_PAGE_MASK);
- size = (IO_PAGE_ALIGN(pbase + size) - (pbase & IO_PAGE_MASK));
- pbase = (unsigned long) __pa(pbase & IO_PAGE_MASK);
-
- spin_lock_irqsave(&iommu->lock, flags);
- npages = size >> IO_PAGE_SHIFT;
- iopte = alloc_streaming_cluster(iommu, npages);
- if (iopte == NULL)
- goto bad;
- dma_base = MAP_BASE + ((iopte - iommu->page_table) << IO_PAGE_SHIFT);
- npages = size >> IO_PAGE_SHIFT;
- iopte_bits = IOPTE_VALID | IOPTE_STBUF | IOPTE_CACHE;
- if (dir != SBUS_DMA_TODEVICE)
- iopte_bits |= IOPTE_WRITE;
- while (npages--) {
- *iopte++ = __iopte(iopte_bits | (pbase & IOPTE_PAGE));
- pbase += IO_PAGE_SIZE;
- }
- npages = size >> IO_PAGE_SHIFT;
- spin_unlock_irqrestore(&iommu->lock, flags);
-
- return (dma_base | offset);
-
-bad:
- spin_unlock_irqrestore(&iommu->lock, flags);
- BUG();
- return 0;
-}
-
-void sbus_unmap_single(struct sbus_dev *sdev, dma_addr_t dma_addr, size_t size, int direction)
-{
- struct sbus_iommu *iommu = sdev->bus->iommu;
- u32 dma_base = dma_addr & IO_PAGE_MASK;
- unsigned long flags;
-
- size = (IO_PAGE_ALIGN(dma_addr + size) - dma_base);
-
- spin_lock_irqsave(&iommu->lock, flags);
- free_streaming_cluster(iommu, dma_base, size >> IO_PAGE_SHIFT);
- sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT, direction);
- spin_unlock_irqrestore(&iommu->lock, flags);
-}
-
-#define SG_ENT_PHYS_ADDRESS(SG) \
- (__pa(page_address((SG)->page)) + (SG)->offset)
-
-static inline void fill_sg(iopte_t *iopte, struct scatterlist *sg, int nused, int nelems, unsigned long iopte_bits)
-{
- struct scatterlist *dma_sg = sg;
- struct scatterlist *sg_end = sg + nelems;
- int i;
-
- for (i = 0; i < nused; i++) {
- unsigned long pteval = ~0UL;
- u32 dma_npages;
-
- dma_npages = ((dma_sg->dma_address & (IO_PAGE_SIZE - 1UL)) +
- dma_sg->dma_length +
- ((IO_PAGE_SIZE - 1UL))) >> IO_PAGE_SHIFT;
- do {
- unsigned long offset;
- signed int len;
-
- /* If we are here, we know we have at least one
- * more page to map. So walk forward until we
- * hit a page crossing, and begin creating new
- * mappings from that spot.
- */
- for (;;) {
- unsigned long tmp;
-
- tmp = (unsigned long) SG_ENT_PHYS_ADDRESS(sg);
- len = sg->length;
- if (((tmp ^ pteval) >> IO_PAGE_SHIFT) != 0UL) {
- pteval = tmp & IO_PAGE_MASK;
- offset = tmp & (IO_PAGE_SIZE - 1UL);
- break;
- }
- if (((tmp ^ (tmp + len - 1UL)) >> IO_PAGE_SHIFT) != 0UL) {
- pteval = (tmp + IO_PAGE_SIZE) & IO_PAGE_MASK;
- offset = 0UL;
- len -= (IO_PAGE_SIZE - (tmp & (IO_PAGE_SIZE - 1UL)));
- break;
- }
- sg++;
- }
-
- pteval = ((pteval & IOPTE_PAGE) | iopte_bits);
- while (len > 0) {
- *iopte++ = __iopte(pteval);
- pteval += IO_PAGE_SIZE;
- len -= (IO_PAGE_SIZE - offset);
- offset = 0;
- dma_npages--;
- }
-
- pteval = (pteval & IOPTE_PAGE) + len;
- sg++;
-
- /* Skip over any tail mappings we've fully mapped,
- * adjusting pteval along the way. Stop when we
- * detect a page crossing event.
- */
- while (sg < sg_end &&
- (pteval << (64 - IO_PAGE_SHIFT)) != 0UL &&
- (pteval == SG_ENT_PHYS_ADDRESS(sg)) &&
- ((pteval ^
- (SG_ENT_PHYS_ADDRESS(sg) + sg->length - 1UL)) >> IO_PAGE_SHIFT) == 0UL) {
- pteval += sg->length;
- sg++;
- }
- if ((pteval << (64 - IO_PAGE_SHIFT)) == 0UL)
- pteval = ~0UL;
- } while (dma_npages != 0);
- dma_sg++;
- }
-}
-
-int sbus_map_sg(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int dir)
-{
- struct sbus_iommu *iommu = sdev->bus->iommu;
- unsigned long flags, npages;
- iopte_t *iopte;
- u32 dma_base;
- struct scatterlist *sgtmp;
- int used;
- unsigned long iopte_bits;
-
- if (dir == SBUS_DMA_NONE)
- BUG();
-
- /* Fast path single entry scatterlists. */
- if (nents == 1) {
- sg->dma_address =
- sbus_map_single(sdev,
- (page_address(sg->page) + sg->offset),
- sg->length, dir);
- sg->dma_length = sg->length;
- return 1;
- }
-
- npages = prepare_sg(sg, nents);
-
- spin_lock_irqsave(&iommu->lock, flags);
- iopte = alloc_streaming_cluster(iommu, npages);
- if (iopte == NULL)
- goto bad;
- dma_base = MAP_BASE + ((iopte - iommu->page_table) << IO_PAGE_SHIFT);
-
- /* Normalize DVMA addresses. */
- sgtmp = sg;
- used = nents;
-
- while (used && sgtmp->dma_length) {
- sgtmp->dma_address += dma_base;
- sgtmp++;
- used--;
- }
- used = nents - used;
-
- iopte_bits = IOPTE_VALID | IOPTE_STBUF | IOPTE_CACHE;
- if (dir != SBUS_DMA_TODEVICE)
- iopte_bits |= IOPTE_WRITE;
-
- fill_sg(iopte, sg, used, nents, iopte_bits);
-#ifdef VERIFY_SG
- verify_sglist(sg, nents, iopte, npages);
-#endif
- spin_unlock_irqrestore(&iommu->lock, flags);
-
- return used;
-
-bad:
- spin_unlock_irqrestore(&iommu->lock, flags);
- BUG();
- return 0;
-}
-
-void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int direction)
-{
- unsigned long size, flags;
- struct sbus_iommu *iommu;
- u32 dvma_base;
- int i;
-
- /* Fast path single entry scatterlists. */
- if (nents == 1) {
- sbus_unmap_single(sdev, sg->dma_address, sg->dma_length, direction);
- return;
- }
-
- dvma_base = sg[0].dma_address & IO_PAGE_MASK;
- for (i = 0; i < nents; i++) {
- if (sg[i].dma_length == 0)
- break;
- }
- i--;
- size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - dvma_base;
-
- iommu = sdev->bus->iommu;
- spin_lock_irqsave(&iommu->lock, flags);
- free_streaming_cluster(iommu, dvma_base, size >> IO_PAGE_SHIFT);
- sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT, direction);
- spin_unlock_irqrestore(&iommu->lock, flags);
-}
-
-void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev, dma_addr_t base, size_t size, int direction)
-{
- struct sbus_iommu *iommu = sdev->bus->iommu;
- unsigned long flags;
-
- size = (IO_PAGE_ALIGN(base + size) - (base & IO_PAGE_MASK));
-
- spin_lock_irqsave(&iommu->lock, flags);
- sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT, direction);
- spin_unlock_irqrestore(&iommu->lock, flags);
-}
-
-void sbus_dma_sync_single_for_device(struct sbus_dev *sdev, dma_addr_t base, size_t size, int direction)
-{
-}
-
-void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int direction)
-{
- struct sbus_iommu *iommu = sdev->bus->iommu;
- unsigned long flags, size;
- u32 base;
- int i;
-
- base = sg[0].dma_address & IO_PAGE_MASK;
- for (i = 0; i < nents; i++) {
- if (sg[i].dma_length == 0)
- break;
- }
- i--;
- size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - base;
-
- spin_lock_irqsave(&iommu->lock, flags);
- sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT, direction);
- spin_unlock_irqrestore(&iommu->lock, flags);
-}
-
-void sbus_dma_sync_sg_for_device(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int direction)
-{
-}
-
/* Enable 64-bit DVMA mode for the given device. */
void sbus_set_sbus64(struct sbus_dev *sdev, int bursts)
{
- struct sbus_iommu *iommu = sdev->bus->iommu;
+ struct iommu *iommu = sdev->ofdev.dev.archdata.iommu;
int slot = sdev->slot;
unsigned long cfg_reg;
u64 val;
- cfg_reg = iommu->sbus_control_reg;
+ cfg_reg = iommu->write_complete_reg;
switch (slot) {
case 0:
cfg_reg += 0x20UL;
* This should conform to both Sunfire/Wildfire server and Fusion
* desktop designs.
*/
-#define SYSIO_IMAP_SLOT0 0x2c04UL
-#define SYSIO_IMAP_SLOT1 0x2c0cUL
-#define SYSIO_IMAP_SLOT2 0x2c14UL
-#define SYSIO_IMAP_SLOT3 0x2c1cUL
-#define SYSIO_IMAP_SCSI 0x3004UL
-#define SYSIO_IMAP_ETH 0x300cUL
-#define SYSIO_IMAP_BPP 0x3014UL
-#define SYSIO_IMAP_AUDIO 0x301cUL
-#define SYSIO_IMAP_PFAIL 0x3024UL
-#define SYSIO_IMAP_KMS 0x302cUL
-#define SYSIO_IMAP_FLPY 0x3034UL
-#define SYSIO_IMAP_SHW 0x303cUL
-#define SYSIO_IMAP_KBD 0x3044UL
-#define SYSIO_IMAP_MS 0x304cUL
-#define SYSIO_IMAP_SER 0x3054UL
-#define SYSIO_IMAP_TIM0 0x3064UL
-#define SYSIO_IMAP_TIM1 0x306cUL
-#define SYSIO_IMAP_UE 0x3074UL
-#define SYSIO_IMAP_CE 0x307cUL
-#define SYSIO_IMAP_SBERR 0x3084UL
-#define SYSIO_IMAP_PMGMT 0x308cUL
-#define SYSIO_IMAP_GFX 0x3094UL
-#define SYSIO_IMAP_EUPA 0x309cUL
+#define SYSIO_IMAP_SLOT0 0x2c00UL
+#define SYSIO_IMAP_SLOT1 0x2c08UL
+#define SYSIO_IMAP_SLOT2 0x2c10UL
+#define SYSIO_IMAP_SLOT3 0x2c18UL
+#define SYSIO_IMAP_SCSI 0x3000UL
+#define SYSIO_IMAP_ETH 0x3008UL
+#define SYSIO_IMAP_BPP 0x3010UL
+#define SYSIO_IMAP_AUDIO 0x3018UL
+#define SYSIO_IMAP_PFAIL 0x3020UL
+#define SYSIO_IMAP_KMS 0x3028UL
+#define SYSIO_IMAP_FLPY 0x3030UL
+#define SYSIO_IMAP_SHW 0x3038UL
+#define SYSIO_IMAP_KBD 0x3040UL
+#define SYSIO_IMAP_MS 0x3048UL
+#define SYSIO_IMAP_SER 0x3050UL
+#define SYSIO_IMAP_TIM0 0x3060UL
+#define SYSIO_IMAP_TIM1 0x3068UL
+#define SYSIO_IMAP_UE 0x3070UL
+#define SYSIO_IMAP_CE 0x3078UL
+#define SYSIO_IMAP_SBERR 0x3080UL
+#define SYSIO_IMAP_PMGMT 0x3088UL
+#define SYSIO_IMAP_GFX 0x3090UL
+#define SYSIO_IMAP_EUPA 0x3098UL
#define bogon ((unsigned long) -1)
static unsigned long sysio_irq_offsets[] = {
* Interrupt Clear register pointer, SYSIO specific version.
*/
#define SYSIO_ICLR_UNUSED0 0x3400UL
-#define SYSIO_ICLR_SLOT0 0x340cUL
-#define SYSIO_ICLR_SLOT1 0x344cUL
-#define SYSIO_ICLR_SLOT2 0x348cUL
-#define SYSIO_ICLR_SLOT3 0x34ccUL
+#define SYSIO_ICLR_SLOT0 0x3408UL
+#define SYSIO_ICLR_SLOT1 0x3448UL
+#define SYSIO_ICLR_SLOT2 0x3488UL
+#define SYSIO_ICLR_SLOT3 0x34c8UL
static unsigned long sysio_imap_to_iclr(unsigned long imap)
{
unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
{
struct sbus_bus *sbus = (struct sbus_bus *)buscookie;
- struct sbus_iommu *iommu = sbus->iommu;
- unsigned long reg_base = iommu->sbus_control_reg - 0x2000UL;
+ struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
+ unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
unsigned long imap, iclr;
int sbus_level = 0;
static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
{
struct sbus_bus *sbus = dev_id;
- struct sbus_iommu *iommu = sbus->iommu;
- unsigned long reg_base = iommu->sbus_control_reg - 0x2000UL;
+ struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
+ unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
unsigned long afsr_reg, afar_reg;
unsigned long afsr, afar, error_bits;
int reported;
static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
{
struct sbus_bus *sbus = dev_id;
- struct sbus_iommu *iommu = sbus->iommu;
- unsigned long reg_base = iommu->sbus_control_reg - 0x2000UL;
+ struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
+ unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
unsigned long afsr_reg, afar_reg;
unsigned long afsr, afar, error_bits;
int reported;
static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
{
struct sbus_bus *sbus = dev_id;
- struct sbus_iommu *iommu = sbus->iommu;
+ struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
unsigned long afsr_reg, afar_reg, reg_base;
unsigned long afsr, afar, error_bits;
int reported;
- reg_base = iommu->sbus_control_reg - 0x2000UL;
+ reg_base = iommu->write_complete_reg - 0x2000UL;
afsr_reg = reg_base + SYSIO_SBUS_AFSR;
afar_reg = reg_base + SYSIO_SBUS_AFAR;
static void __init sysio_register_error_handlers(struct sbus_bus *sbus)
{
- struct sbus_iommu *iommu = sbus->iommu;
- unsigned long reg_base = iommu->sbus_control_reg - 0x2000UL;
+ struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
+ unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
unsigned int irq;
u64 control;
irq = sbus_build_irq(sbus, SYSIO_UE_INO);
- if (request_irq(irq, sysio_ue_handler,
- IRQF_SHARED, "SYSIO UE", sbus) < 0) {
+ if (request_irq(irq, sysio_ue_handler, 0,
+ "SYSIO_UE", sbus) < 0) {
prom_printf("SYSIO[%x]: Cannot register UE interrupt.\n",
sbus->portid);
prom_halt();
}
irq = sbus_build_irq(sbus, SYSIO_CE_INO);
- if (request_irq(irq, sysio_ce_handler,
- IRQF_SHARED, "SYSIO CE", sbus) < 0) {
+ if (request_irq(irq, sysio_ce_handler, 0,
+ "SYSIO_CE", sbus) < 0) {
prom_printf("SYSIO[%x]: Cannot register CE interrupt.\n",
sbus->portid);
prom_halt();
}
irq = sbus_build_irq(sbus, SYSIO_SBUSERR_INO);
- if (request_irq(irq, sysio_sbus_error_handler,
- IRQF_SHARED, "SYSIO SBUS Error", sbus) < 0) {
+ if (request_irq(irq, sysio_sbus_error_handler, 0,
+ "SYSIO_SBERR", sbus) < 0) {
prom_printf("SYSIO[%x]: Cannot register SBUS Error interrupt.\n",
sbus->portid);
prom_halt();
SYSIO_ECNTRL_CEEN),
reg_base + ECC_CONTROL);
- control = upa_readq(iommu->sbus_control_reg);
+ control = upa_readq(iommu->write_complete_reg);
control |= 0x100UL; /* SBUS Error Interrupt Enable */
- upa_writeq(control, iommu->sbus_control_reg);
+ upa_writeq(control, iommu->write_complete_reg);
}
/* Boot time initialization. */
static void __init sbus_iommu_init(int __node, struct sbus_bus *sbus)
{
- struct linux_prom64_registers *pr;
+ const struct linux_prom64_registers *pr;
struct device_node *dp;
- struct sbus_iommu *iommu;
- unsigned long regs, tsb_base;
+ struct iommu *iommu;
+ struct strbuf *strbuf;
+ unsigned long regs, reg_base;
u64 control;
int i;
pr = of_get_property(dp, "reg", NULL);
if (!pr) {
- prom_printf("sbus_iommu_init: Cannot map SYSIO control registers.\n");
+ prom_printf("sbus_iommu_init: Cannot map SYSIO "
+ "control registers.\n");
prom_halt();
}
regs = pr->phys_addr;
- iommu = kmalloc(sizeof(*iommu) + SMP_CACHE_BYTES, GFP_ATOMIC);
- if (iommu == NULL) {
- prom_printf("sbus_iommu_init: Fatal error, kmalloc(iommu) failed\n");
- prom_halt();
- }
-
- /* Align on E$ line boundary. */
- iommu = (struct sbus_iommu *)
- (((unsigned long)iommu + (SMP_CACHE_BYTES - 1UL)) &
- ~(SMP_CACHE_BYTES - 1UL));
-
- memset(iommu, 0, sizeof(*iommu));
-
- /* We start with no consistent mappings. */
- iommu->lowest_consistent_map = CLUSTER_NPAGES;
-
- for (i = 0; i < NCLUSTERS; i++) {
- iommu->alloc_info[i].flush = 0;
- iommu->alloc_info[i].next = 0;
- }
-
- /* Setup spinlock. */
- spin_lock_init(&iommu->lock);
-
- /* Init register offsets. */
- iommu->iommu_regs = regs + SYSIO_IOMMUREG_BASE;
- iommu->strbuf_regs = regs + SYSIO_STRBUFREG_BASE;
+ iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
+ if (!iommu)
+ goto fatal_memory_error;
+ strbuf = kzalloc(sizeof(*strbuf), GFP_ATOMIC);
+ if (!strbuf)
+ goto fatal_memory_error;
+
+ sbus->ofdev.dev.archdata.iommu = iommu;
+ sbus->ofdev.dev.archdata.stc = strbuf;
+
+ reg_base = regs + SYSIO_IOMMUREG_BASE;
+ iommu->iommu_control = reg_base + IOMMU_CONTROL;
+ iommu->iommu_tsbbase = reg_base + IOMMU_TSBBASE;
+ iommu->iommu_flush = reg_base + IOMMU_FLUSH;
+ iommu->iommu_tags = iommu->iommu_control +
+ (IOMMU_TAGDIAG - IOMMU_CONTROL);
+
+ reg_base = regs + SYSIO_STRBUFREG_BASE;
+ strbuf->strbuf_control = reg_base + STRBUF_CONTROL;
+ strbuf->strbuf_pflush = reg_base + STRBUF_PFLUSH;
+ strbuf->strbuf_fsync = reg_base + STRBUF_FSYNC;
+
+ strbuf->strbuf_enabled = 1;
+
+ strbuf->strbuf_flushflag = (volatile unsigned long *)
+ ((((unsigned long)&strbuf->__flushflag_buf[0])
+ + 63UL)
+ & ~63UL);
+ strbuf->strbuf_flushflag_pa = (unsigned long)
+ __pa(strbuf->strbuf_flushflag);
/* The SYSIO SBUS control register is used for dummy reads
* in order to ensure write completion.
*/
- iommu->sbus_control_reg = regs + 0x2000UL;
-
- /* Link into SYSIO software state. */
- sbus->iommu = iommu;
+ iommu->write_complete_reg = regs + 0x2000UL;
printk("SYSIO: UPA portID %x, at %016lx\n",
sbus->portid, regs);
/* Setup for TSB_SIZE=7, TBW_SIZE=0, MMU_DE=1, MMU_EN=1 */
- control = upa_readq(iommu->iommu_regs + IOMMU_CONTROL);
+ if (iommu_table_init(iommu, IO_TSB_SIZE, MAP_BASE, 0xffffffff))
+ goto fatal_memory_error;
+
+ control = upa_readq(iommu->iommu_control);
control = ((7UL << 16UL) |
(0UL << 2UL) |
(1UL << 1UL) |
(1UL << 0UL));
-
- /* Using the above configuration we need 1MB iommu page
- * table (128K ioptes * 8 bytes per iopte). This is
- * page order 7 on UltraSparc.
- */
- tsb_base = __get_free_pages(GFP_ATOMIC, get_order(IO_TSB_SIZE));
- if (tsb_base == 0UL) {
- prom_printf("sbus_iommu_init: Fatal error, cannot alloc TSB table.\n");
- prom_halt();
- }
-
- iommu->page_table = (iopte_t *) tsb_base;
- memset(iommu->page_table, 0, IO_TSB_SIZE);
-
- upa_writeq(control, iommu->iommu_regs + IOMMU_CONTROL);
+ upa_writeq(control, iommu->iommu_control);
/* Clean out any cruft in the IOMMU using
* diagnostic accesses.
*/
for (i = 0; i < 16; i++) {
- unsigned long dram = iommu->iommu_regs + IOMMU_DRAMDIAG;
- unsigned long tag = iommu->iommu_regs + IOMMU_TAGDIAG;
+ unsigned long dram, tag;
+
+ dram = iommu->iommu_control + (IOMMU_DRAMDIAG - IOMMU_CONTROL);
+ tag = iommu->iommu_control + (IOMMU_TAGDIAG - IOMMU_CONTROL);
dram += (unsigned long)i * 8UL;
tag += (unsigned long)i * 8UL;
upa_writeq(0, dram);
upa_writeq(0, tag);
}
- upa_readq(iommu->sbus_control_reg);
+ upa_readq(iommu->write_complete_reg);
/* Give the TSB to SYSIO. */
- upa_writeq(__pa(tsb_base), iommu->iommu_regs + IOMMU_TSBBASE);
+ upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
/* Setup streaming buffer, DE=1 SB_EN=1 */
control = (1UL << 1UL) | (1UL << 0UL);
- upa_writeq(control, iommu->strbuf_regs + STRBUF_CONTROL);
+ upa_writeq(control, strbuf->strbuf_control);
/* Clear out the tags using diagnostics. */
for (i = 0; i < 16; i++) {
unsigned long ptag, ltag;
- ptag = iommu->strbuf_regs + STRBUF_PTAGDIAG;
- ltag = iommu->strbuf_regs + STRBUF_LTAGDIAG;
+ ptag = strbuf->strbuf_control +
+ (STRBUF_PTAGDIAG - STRBUF_CONTROL);
+ ltag = strbuf->strbuf_control +
+ (STRBUF_LTAGDIAG - STRBUF_CONTROL);
ptag += (unsigned long)i * 8UL;
ltag += (unsigned long)i * 8UL;
}
/* Enable DVMA arbitration for all devices/slots. */
- control = upa_readq(iommu->sbus_control_reg);
+ control = upa_readq(iommu->write_complete_reg);
control |= 0x3fUL;
- upa_writeq(control, iommu->sbus_control_reg);
+ upa_writeq(control, iommu->write_complete_reg);
/* Now some Xfire specific grot... */
if (this_is_starfire)
starfire_hookup(sbus->portid);
sysio_register_error_handlers(sbus);
+ return;
+
+fatal_memory_error:
+ prom_printf("sbus_iommu_init: Fatal memory allocation error.\n");
}
void sbus_fill_device_irq(struct sbus_dev *sdev)
{
struct device_node *dp = of_find_node_by_phandle(sdev->prom_node);
- struct linux_prom_irqs *irqs;
+ const struct linux_prom_irqs *irqs;
irqs = of_get_property(dp, "interrupts", NULL);
if (!irqs) {
projects / linux-2.6 / blobdiff