mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-16 14:02:10 +00:00
ec4d18f219
We used to access the 64-bit IRQ IMAP and ICLR registers of bus controllers 4-bytes in and as a 32-bit register word, since only the low 32-bits were relevant. This seemed like a good idea at the time. But the PCI-E controller requires full 8-byte 64-bit access to these registers, so we switched over to accessing them fully. SBUS was not adjusted properly, which broke interrupts completely. Signed-off-by: David S. Miller <davem@davemloft.net>
1206 lines
33 KiB
C
1206 lines
33 KiB
C
/* $Id: sbus.c,v 1.19 2002/01/23 11:27:32 davem Exp $
|
|
* sbus.c: UltraSparc SBUS controller support.
|
|
*
|
|
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <asm/page.h>
|
|
#include <asm/sbus.h>
|
|
#include <asm/io.h>
|
|
#include <asm/upa.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/starfire.h>
|
|
|
|
#include "iommu_common.h"
|
|
|
|
#define MAP_BASE ((u32)0xc0000000)
|
|
|
|
struct sbus_info {
|
|
struct iommu iommu;
|
|
struct strbuf strbuf;
|
|
};
|
|
|
|
/* Offsets from iommu_regs */
|
|
#define SYSIO_IOMMUREG_BASE 0x2400UL
|
|
#define IOMMU_CONTROL (0x2400UL - 0x2400UL) /* IOMMU control register */
|
|
#define IOMMU_TSBBASE (0x2408UL - 0x2400UL) /* TSB base address register */
|
|
#define IOMMU_FLUSH (0x2410UL - 0x2400UL) /* IOMMU flush register */
|
|
#define IOMMU_VADIAG (0x4400UL - 0x2400UL) /* SBUS virtual address diagnostic */
|
|
#define IOMMU_TAGCMP (0x4408UL - 0x2400UL) /* TLB tag compare diagnostics */
|
|
#define IOMMU_LRUDIAG (0x4500UL - 0x2400UL) /* IOMMU LRU queue diagnostics */
|
|
#define IOMMU_TAGDIAG (0x4580UL - 0x2400UL) /* TLB tag diagnostics */
|
|
#define IOMMU_DRAMDIAG (0x4600UL - 0x2400UL) /* TLB data RAM diagnostics */
|
|
|
|
#define IOMMU_DRAM_VALID (1UL << 30UL)
|
|
|
|
static void __iommu_flushall(struct iommu *iommu)
|
|
{
|
|
unsigned long tag;
|
|
int entry;
|
|
|
|
tag = iommu->iommu_control + (IOMMU_TAGDIAG - IOMMU_CONTROL);
|
|
for (entry = 0; entry < 16; entry++) {
|
|
upa_writeq(0, tag);
|
|
tag += 8UL;
|
|
}
|
|
upa_readq(iommu->write_complete_reg);
|
|
}
|
|
|
|
/* Offsets from strbuf_regs */
|
|
#define SYSIO_STRBUFREG_BASE 0x2800UL
|
|
#define STRBUF_CONTROL (0x2800UL - 0x2800UL) /* Control */
|
|
#define STRBUF_PFLUSH (0x2808UL - 0x2800UL) /* Page flush/invalidate */
|
|
#define STRBUF_FSYNC (0x2810UL - 0x2800UL) /* Flush synchronization */
|
|
#define STRBUF_DRAMDIAG (0x5000UL - 0x2800UL) /* data RAM diagnostic */
|
|
#define STRBUF_ERRDIAG (0x5400UL - 0x2800UL) /* error status diagnostics */
|
|
#define STRBUF_PTAGDIAG (0x5800UL - 0x2800UL) /* Page tag diagnostics */
|
|
#define STRBUF_LTAGDIAG (0x5900UL - 0x2800UL) /* Line tag diagnostics */
|
|
|
|
#define STRBUF_TAG_VALID 0x02UL
|
|
|
|
static void sbus_strbuf_flush(struct iommu *iommu, struct strbuf *strbuf, u32 base, unsigned long npages, int direction)
|
|
{
|
|
unsigned long n;
|
|
int limit;
|
|
|
|
n = npages;
|
|
while (n--)
|
|
upa_writeq(base + (n << IO_PAGE_SHIFT), strbuf->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;
|
|
|
|
*(strbuf->strbuf_flushflag) = 0UL;
|
|
|
|
/* Whoopee cushion! */
|
|
upa_writeq(strbuf->strbuf_flushflag_pa, strbuf->strbuf_fsync);
|
|
upa_readq(iommu->write_complete_reg);
|
|
|
|
limit = 100000;
|
|
while (*(strbuf->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);
|
|
}
|
|
|
|
/* Based largely upon the ppc64 iommu allocator. */
|
|
static long sbus_arena_alloc(struct iommu *iommu, unsigned long npages)
|
|
{
|
|
struct 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;
|
|
}
|
|
}
|
|
|
|
for (i = n; i < end; i++) {
|
|
if (test_bit(i, arena->map)) {
|
|
start = i + 1;
|
|
goto again;
|
|
}
|
|
}
|
|
|
|
for (i = n; i < end; i++)
|
|
__set_bit(i, arena->map);
|
|
|
|
arena->hint = end;
|
|
|
|
return n;
|
|
}
|
|
|
|
static void sbus_arena_free(struct iommu_arena *arena, unsigned long base, unsigned long npages)
|
|
{
|
|
unsigned long i;
|
|
|
|
for (i = base; i < (base + npages); i++)
|
|
__clear_bit(i, arena->map);
|
|
}
|
|
|
|
static void sbus_iommu_table_init(struct iommu *iommu, unsigned int tsbsize)
|
|
{
|
|
unsigned long tsbbase, order, sz, num_tsb_entries;
|
|
|
|
num_tsb_entries = tsbsize / sizeof(iopte_t);
|
|
|
|
/* Setup initial software IOMMU state. */
|
|
spin_lock_init(&iommu->lock);
|
|
iommu->page_table_map_base = MAP_BASE;
|
|
|
|
/* Allocate and initialize the free area map. */
|
|
sz = num_tsb_entries / 8;
|
|
sz = (sz + 7UL) & ~7UL;
|
|
iommu->arena.map = kzalloc(sz, GFP_KERNEL);
|
|
if (!iommu->arena.map) {
|
|
prom_printf("SBUS_IOMMU: Error, kmalloc(arena.map) failed.\n");
|
|
prom_halt();
|
|
}
|
|
iommu->arena.limit = num_tsb_entries;
|
|
|
|
/* Now allocate and setup the IOMMU page table itself. */
|
|
order = get_order(tsbsize);
|
|
tsbbase = __get_free_pages(GFP_KERNEL, order);
|
|
if (!tsbbase) {
|
|
prom_printf("IOMMU: Error, gfp(tsb) failed.\n");
|
|
prom_halt();
|
|
}
|
|
iommu->page_table = (iopte_t *)tsbbase;
|
|
memset(iommu->page_table, 0, tsbsize);
|
|
}
|
|
|
|
static inline iopte_t *alloc_npages(struct iommu *iommu, unsigned long npages)
|
|
{
|
|
long entry;
|
|
|
|
entry = sbus_arena_alloc(iommu, npages);
|
|
if (unlikely(entry < 0))
|
|
return NULL;
|
|
|
|
return iommu->page_table + entry;
|
|
}
|
|
|
|
static inline void free_npages(struct iommu *iommu, dma_addr_t base, unsigned long npages)
|
|
{
|
|
sbus_arena_free(&iommu->arena, base >> IO_PAGE_SHIFT, npages);
|
|
}
|
|
|
|
void *sbus_alloc_consistent(struct sbus_dev *sdev, size_t size, dma_addr_t *dvma_addr)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
iopte_t *iopte;
|
|
unsigned long flags, order, first_page;
|
|
void *ret;
|
|
int npages;
|
|
|
|
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);
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
|
|
spin_lock_irqsave(&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;
|
|
}
|
|
|
|
*dvma_addr = (iommu->page_table_map_base +
|
|
((iopte - iommu->page_table) << IO_PAGE_SHIFT));
|
|
ret = (void *) first_page;
|
|
npages = size >> IO_PAGE_SHIFT;
|
|
first_page = __pa(first_page);
|
|
while (npages--) {
|
|
iopte_val(*iopte) = (IOPTE_VALID | IOPTE_CACHE |
|
|
IOPTE_WRITE |
|
|
(first_page & IOPTE_PAGE));
|
|
iopte++;
|
|
first_page += IO_PAGE_SIZE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void sbus_free_consistent(struct sbus_dev *sdev, size_t size, void *cpu, dma_addr_t dvma)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
iopte_t *iopte;
|
|
unsigned long flags, order, npages;
|
|
|
|
npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
iopte = iommu->page_table +
|
|
((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
|
|
free_npages(iommu, dvma - iommu->page_table_map_base, npages);
|
|
|
|
spin_unlock_irqrestore(&iommu->lock, flags);
|
|
|
|
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 sz, int direction)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
iopte_t *base;
|
|
unsigned long flags, npages, oaddr;
|
|
unsigned long i, base_paddr;
|
|
u32 bus_addr, ret;
|
|
unsigned long iopte_protection;
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
|
|
if (unlikely(direction == SBUS_DMA_NONE))
|
|
BUG();
|
|
|
|
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);
|
|
spin_unlock_irqrestore(&iommu->lock, flags);
|
|
|
|
if (unlikely(!base))
|
|
BUG();
|
|
|
|
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);
|
|
|
|
iopte_protection = IOPTE_VALID | IOPTE_STBUF | IOPTE_CACHE;
|
|
if (direction != SBUS_DMA_TODEVICE)
|
|
iopte_protection |= IOPTE_WRITE;
|
|
|
|
for (i = 0; i < npages; i++, base++, base_paddr += IO_PAGE_SIZE)
|
|
iopte_val(*base) = iopte_protection | base_paddr;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void sbus_unmap_single(struct sbus_dev *sdev, dma_addr_t bus_addr, size_t sz, int direction)
|
|
{
|
|
struct sbus_info *info = sdev->bus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
struct strbuf *strbuf = &info->strbuf;
|
|
iopte_t *base;
|
|
unsigned long flags, npages, i;
|
|
|
|
if (unlikely(direction == SBUS_DMA_NONE))
|
|
BUG();
|
|
|
|
npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
|
|
npages >>= IO_PAGE_SHIFT;
|
|
base = iommu->page_table +
|
|
((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
|
|
|
|
bus_addr &= IO_PAGE_MASK;
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
sbus_strbuf_flush(iommu, strbuf, bus_addr, npages, direction);
|
|
for (i = 0; i < npages; i++)
|
|
iopte_val(base[i]) = 0UL;
|
|
free_npages(iommu, bus_addr - iommu->page_table_map_base, npages);
|
|
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_protection)
|
|
{
|
|
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 = 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 = iopte_protection | (pteval & IOPTE_PAGE);
|
|
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 *sglist, int nelems, int direction)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
unsigned long flags, npages, iopte_protection;
|
|
iopte_t *base;
|
|
u32 dma_base;
|
|
struct scatterlist *sgtmp;
|
|
int used;
|
|
|
|
/* Fast path single entry scatterlists. */
|
|
if (nelems == 1) {
|
|
sglist->dma_address =
|
|
sbus_map_single(sdev,
|
|
(page_address(sglist->page) + sglist->offset),
|
|
sglist->length, direction);
|
|
sglist->dma_length = sglist->length;
|
|
return 1;
|
|
}
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
|
|
if (unlikely(direction == SBUS_DMA_NONE))
|
|
BUG();
|
|
|
|
npages = prepare_sg(sglist, nelems);
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
base = alloc_npages(iommu, npages);
|
|
spin_unlock_irqrestore(&iommu->lock, flags);
|
|
|
|
if (unlikely(base == NULL))
|
|
BUG();
|
|
|
|
dma_base = iommu->page_table_map_base +
|
|
((base - iommu->page_table) << IO_PAGE_SHIFT);
|
|
|
|
/* Normalize DVMA addresses. */
|
|
used = nelems;
|
|
|
|
sgtmp = sglist;
|
|
while (used && sgtmp->dma_length) {
|
|
sgtmp->dma_address += dma_base;
|
|
sgtmp++;
|
|
used--;
|
|
}
|
|
used = nelems - used;
|
|
|
|
iopte_protection = IOPTE_VALID | IOPTE_STBUF | IOPTE_CACHE;
|
|
if (direction != SBUS_DMA_TODEVICE)
|
|
iopte_protection |= IOPTE_WRITE;
|
|
|
|
fill_sg(base, sglist, used, nelems, iopte_protection);
|
|
|
|
#ifdef VERIFY_SG
|
|
verify_sglist(sglist, nelems, base, npages);
|
|
#endif
|
|
|
|
return used;
|
|
}
|
|
|
|
void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sglist, int nelems, int direction)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
struct strbuf *strbuf;
|
|
iopte_t *base;
|
|
unsigned long flags, i, npages;
|
|
u32 bus_addr;
|
|
|
|
if (unlikely(direction == SBUS_DMA_NONE))
|
|
BUG();
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
strbuf = &info->strbuf;
|
|
|
|
bus_addr = sglist->dma_address & IO_PAGE_MASK;
|
|
|
|
for (i = 1; i < nelems; i++)
|
|
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;
|
|
|
|
base = iommu->page_table +
|
|
((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
sbus_strbuf_flush(iommu, strbuf, bus_addr, npages, direction);
|
|
for (i = 0; i < npages; i++)
|
|
iopte_val(base[i]) = 0UL;
|
|
free_npages(iommu, bus_addr - iommu->page_table_map_base, npages);
|
|
spin_unlock_irqrestore(&iommu->lock, flags);
|
|
}
|
|
|
|
void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev, dma_addr_t bus_addr, size_t sz, int direction)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
struct strbuf *strbuf;
|
|
unsigned long flags, npages;
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
strbuf = &info->strbuf;
|
|
|
|
npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
|
|
npages >>= IO_PAGE_SHIFT;
|
|
bus_addr &= IO_PAGE_MASK;
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
sbus_strbuf_flush(iommu, strbuf, bus_addr, npages, 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 *sglist, int nelems, int direction)
|
|
{
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
struct strbuf *strbuf;
|
|
unsigned long flags, npages, i;
|
|
u32 bus_addr;
|
|
|
|
info = sdev->bus->iommu;
|
|
iommu = &info->iommu;
|
|
strbuf = &info->strbuf;
|
|
|
|
bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
|
|
for (i = 0; i < nelems; i++) {
|
|
if (!sglist[i].dma_length)
|
|
break;
|
|
}
|
|
i--;
|
|
npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length)
|
|
- bus_addr) >> IO_PAGE_SHIFT;
|
|
|
|
spin_lock_irqsave(&iommu->lock, flags);
|
|
sbus_strbuf_flush(iommu, strbuf, bus_addr, npages, 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_info *info = sdev->bus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
int slot = sdev->slot;
|
|
unsigned long cfg_reg;
|
|
u64 val;
|
|
|
|
cfg_reg = iommu->write_complete_reg;
|
|
switch (slot) {
|
|
case 0:
|
|
cfg_reg += 0x20UL;
|
|
break;
|
|
case 1:
|
|
cfg_reg += 0x28UL;
|
|
break;
|
|
case 2:
|
|
cfg_reg += 0x30UL;
|
|
break;
|
|
case 3:
|
|
cfg_reg += 0x38UL;
|
|
break;
|
|
case 13:
|
|
cfg_reg += 0x40UL;
|
|
break;
|
|
case 14:
|
|
cfg_reg += 0x48UL;
|
|
break;
|
|
case 15:
|
|
cfg_reg += 0x50UL;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
};
|
|
|
|
val = upa_readq(cfg_reg);
|
|
if (val & (1UL << 14UL)) {
|
|
/* Extended transfer mode already enabled. */
|
|
return;
|
|
}
|
|
|
|
val |= (1UL << 14UL);
|
|
|
|
if (bursts & DMA_BURST8)
|
|
val |= (1UL << 1UL);
|
|
if (bursts & DMA_BURST16)
|
|
val |= (1UL << 2UL);
|
|
if (bursts & DMA_BURST32)
|
|
val |= (1UL << 3UL);
|
|
if (bursts & DMA_BURST64)
|
|
val |= (1UL << 4UL);
|
|
upa_writeq(val, cfg_reg);
|
|
}
|
|
|
|
/* INO number to IMAP register offset for SYSIO external IRQ's.
|
|
* This should conform to both Sunfire/Wildfire server and Fusion
|
|
* desktop designs.
|
|
*/
|
|
#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[] = {
|
|
/* SBUS Slot 0 --> 3, level 1 --> 7 */
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
|
|
|
|
/* Onboard devices (not relevant/used on SunFire). */
|
|
SYSIO_IMAP_SCSI,
|
|
SYSIO_IMAP_ETH,
|
|
SYSIO_IMAP_BPP,
|
|
bogon,
|
|
SYSIO_IMAP_AUDIO,
|
|
SYSIO_IMAP_PFAIL,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_KMS,
|
|
SYSIO_IMAP_FLPY,
|
|
SYSIO_IMAP_SHW,
|
|
SYSIO_IMAP_KBD,
|
|
SYSIO_IMAP_MS,
|
|
SYSIO_IMAP_SER,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_TIM0,
|
|
SYSIO_IMAP_TIM1,
|
|
bogon,
|
|
bogon,
|
|
SYSIO_IMAP_UE,
|
|
SYSIO_IMAP_CE,
|
|
SYSIO_IMAP_SBERR,
|
|
SYSIO_IMAP_PMGMT,
|
|
};
|
|
|
|
#undef bogon
|
|
|
|
#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
|
|
|
|
/* Convert Interrupt Mapping register pointer to associated
|
|
* Interrupt Clear register pointer, SYSIO specific version.
|
|
*/
|
|
#define SYSIO_ICLR_UNUSED0 0x3400UL
|
|
#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;
|
|
return imap + diff;
|
|
}
|
|
|
|
unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
|
|
{
|
|
struct sbus_bus *sbus = (struct sbus_bus *)buscookie;
|
|
struct sbus_info *info = sbus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
|
|
unsigned long imap, iclr;
|
|
int sbus_level = 0;
|
|
|
|
imap = sysio_irq_offsets[ino];
|
|
if (imap == ((unsigned long)-1)) {
|
|
prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
|
|
ino);
|
|
prom_halt();
|
|
}
|
|
imap += reg_base;
|
|
|
|
/* SYSIO inconsistency. For external SLOTS, we have to select
|
|
* the right ICLR register based upon the lower SBUS irq level
|
|
* bits.
|
|
*/
|
|
if (ino >= 0x20) {
|
|
iclr = sysio_imap_to_iclr(imap);
|
|
} else {
|
|
int sbus_slot = (ino & 0x18)>>3;
|
|
|
|
sbus_level = ino & 0x7;
|
|
|
|
switch(sbus_slot) {
|
|
case 0:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT0;
|
|
break;
|
|
case 1:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT1;
|
|
break;
|
|
case 2:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT2;
|
|
break;
|
|
default:
|
|
case 3:
|
|
iclr = reg_base + SYSIO_ICLR_SLOT3;
|
|
break;
|
|
};
|
|
|
|
iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
|
|
}
|
|
return build_irq(sbus_level, iclr, imap);
|
|
}
|
|
|
|
/* Error interrupt handling. */
|
|
#define SYSIO_UE_AFSR 0x0030UL
|
|
#define SYSIO_UE_AFAR 0x0038UL
|
|
#define SYSIO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
|
|
#define SYSIO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
|
|
#define SYSIO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
|
|
#define SYSIO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
|
|
#define SYSIO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
|
|
#define SYSIO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
|
|
#define SYSIO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
|
|
#define SYSIO_UEAFSR_DOFF 0x0000e00000000000UL /* Doubleword Offset */
|
|
#define SYSIO_UEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
|
|
#define SYSIO_UEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
|
|
#define SYSIO_UEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
|
|
static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
|
|
{
|
|
struct sbus_bus *sbus = dev_id;
|
|
struct sbus_info *info = sbus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
|
|
unsigned long afsr_reg, afar_reg;
|
|
unsigned long afsr, afar, error_bits;
|
|
int reported;
|
|
|
|
afsr_reg = reg_base + SYSIO_UE_AFSR;
|
|
afar_reg = reg_base + SYSIO_UE_AFAR;
|
|
|
|
/* Latch error status. */
|
|
afsr = upa_readq(afsr_reg);
|
|
afar = upa_readq(afar_reg);
|
|
|
|
/* Clear primary/secondary error status bits. */
|
|
error_bits = afsr &
|
|
(SYSIO_UEAFSR_PPIO | SYSIO_UEAFSR_PDRD | SYSIO_UEAFSR_PDWR |
|
|
SYSIO_UEAFSR_SPIO | SYSIO_UEAFSR_SDRD | SYSIO_UEAFSR_SDWR);
|
|
upa_writeq(error_bits, afsr_reg);
|
|
|
|
/* Log the error. */
|
|
printk("SYSIO[%x]: Uncorrectable ECC Error, primary error type[%s]\n",
|
|
sbus->portid,
|
|
(((error_bits & SYSIO_UEAFSR_PPIO) ?
|
|
"PIO" :
|
|
((error_bits & SYSIO_UEAFSR_PDRD) ?
|
|
"DVMA Read" :
|
|
((error_bits & SYSIO_UEAFSR_PDWR) ?
|
|
"DVMA Write" : "???")))));
|
|
printk("SYSIO[%x]: DOFF[%lx] SIZE[%lx] MID[%lx]\n",
|
|
sbus->portid,
|
|
(afsr & SYSIO_UEAFSR_DOFF) >> 45UL,
|
|
(afsr & SYSIO_UEAFSR_SIZE) >> 42UL,
|
|
(afsr & SYSIO_UEAFSR_MID) >> 37UL);
|
|
printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
|
|
printk("SYSIO[%x]: Secondary UE errors [", sbus->portid);
|
|
reported = 0;
|
|
if (afsr & SYSIO_UEAFSR_SPIO) {
|
|
reported++;
|
|
printk("(PIO)");
|
|
}
|
|
if (afsr & SYSIO_UEAFSR_SDRD) {
|
|
reported++;
|
|
printk("(DVMA Read)");
|
|
}
|
|
if (afsr & SYSIO_UEAFSR_SDWR) {
|
|
reported++;
|
|
printk("(DVMA Write)");
|
|
}
|
|
if (!reported)
|
|
printk("(none)");
|
|
printk("]\n");
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#define SYSIO_CE_AFSR 0x0040UL
|
|
#define SYSIO_CE_AFAR 0x0048UL
|
|
#define SYSIO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
|
|
#define SYSIO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
|
|
#define SYSIO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
|
|
#define SYSIO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO cause */
|
|
#define SYSIO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
|
|
#define SYSIO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
|
|
#define SYSIO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
|
|
#define SYSIO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
|
|
#define SYSIO_CEAFSR_DOFF 0x0000e00000000000UL /* Double Offset */
|
|
#define SYSIO_CEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
|
|
#define SYSIO_CEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
|
|
#define SYSIO_CEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
|
|
static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
|
|
{
|
|
struct sbus_bus *sbus = dev_id;
|
|
struct sbus_info *info = sbus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
|
|
unsigned long afsr_reg, afar_reg;
|
|
unsigned long afsr, afar, error_bits;
|
|
int reported;
|
|
|
|
afsr_reg = reg_base + SYSIO_CE_AFSR;
|
|
afar_reg = reg_base + SYSIO_CE_AFAR;
|
|
|
|
/* Latch error status. */
|
|
afsr = upa_readq(afsr_reg);
|
|
afar = upa_readq(afar_reg);
|
|
|
|
/* Clear primary/secondary error status bits. */
|
|
error_bits = afsr &
|
|
(SYSIO_CEAFSR_PPIO | SYSIO_CEAFSR_PDRD | SYSIO_CEAFSR_PDWR |
|
|
SYSIO_CEAFSR_SPIO | SYSIO_CEAFSR_SDRD | SYSIO_CEAFSR_SDWR);
|
|
upa_writeq(error_bits, afsr_reg);
|
|
|
|
printk("SYSIO[%x]: Correctable ECC Error, primary error type[%s]\n",
|
|
sbus->portid,
|
|
(((error_bits & SYSIO_CEAFSR_PPIO) ?
|
|
"PIO" :
|
|
((error_bits & SYSIO_CEAFSR_PDRD) ?
|
|
"DVMA Read" :
|
|
((error_bits & SYSIO_CEAFSR_PDWR) ?
|
|
"DVMA Write" : "???")))));
|
|
|
|
/* XXX Use syndrome and afar to print out module string just like
|
|
* XXX UDB CE trap handler does... -DaveM
|
|
*/
|
|
printk("SYSIO[%x]: DOFF[%lx] ECC Syndrome[%lx] Size[%lx] MID[%lx]\n",
|
|
sbus->portid,
|
|
(afsr & SYSIO_CEAFSR_DOFF) >> 45UL,
|
|
(afsr & SYSIO_CEAFSR_ESYND) >> 48UL,
|
|
(afsr & SYSIO_CEAFSR_SIZE) >> 42UL,
|
|
(afsr & SYSIO_CEAFSR_MID) >> 37UL);
|
|
printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
|
|
|
|
printk("SYSIO[%x]: Secondary CE errors [", sbus->portid);
|
|
reported = 0;
|
|
if (afsr & SYSIO_CEAFSR_SPIO) {
|
|
reported++;
|
|
printk("(PIO)");
|
|
}
|
|
if (afsr & SYSIO_CEAFSR_SDRD) {
|
|
reported++;
|
|
printk("(DVMA Read)");
|
|
}
|
|
if (afsr & SYSIO_CEAFSR_SDWR) {
|
|
reported++;
|
|
printk("(DVMA Write)");
|
|
}
|
|
if (!reported)
|
|
printk("(none)");
|
|
printk("]\n");
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#define SYSIO_SBUS_AFSR 0x2010UL
|
|
#define SYSIO_SBUS_AFAR 0x2018UL
|
|
#define SYSIO_SBAFSR_PLE 0x8000000000000000UL /* Primary Late PIO Error */
|
|
#define SYSIO_SBAFSR_PTO 0x4000000000000000UL /* Primary SBUS Timeout */
|
|
#define SYSIO_SBAFSR_PBERR 0x2000000000000000UL /* Primary SBUS Error ACK */
|
|
#define SYSIO_SBAFSR_SLE 0x1000000000000000UL /* Secondary Late PIO Error */
|
|
#define SYSIO_SBAFSR_STO 0x0800000000000000UL /* Secondary SBUS Timeout */
|
|
#define SYSIO_SBAFSR_SBERR 0x0400000000000000UL /* Secondary SBUS Error ACK */
|
|
#define SYSIO_SBAFSR_RESV1 0x03ff000000000000UL /* Reserved */
|
|
#define SYSIO_SBAFSR_RD 0x0000800000000000UL /* Primary was late PIO read */
|
|
#define SYSIO_SBAFSR_RESV2 0x0000600000000000UL /* Reserved */
|
|
#define SYSIO_SBAFSR_SIZE 0x00001c0000000000UL /* Size of transfer */
|
|
#define SYSIO_SBAFSR_MID 0x000003e000000000UL /* MID causing the error */
|
|
#define SYSIO_SBAFSR_RESV3 0x0000001fffffffffUL /* Reserved */
|
|
static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
|
|
{
|
|
struct sbus_bus *sbus = dev_id;
|
|
struct sbus_info *info = sbus->iommu;
|
|
struct iommu *iommu = &info->iommu;
|
|
unsigned long afsr_reg, afar_reg, reg_base;
|
|
unsigned long afsr, afar, error_bits;
|
|
int reported;
|
|
|
|
reg_base = iommu->write_complete_reg - 0x2000UL;
|
|
afsr_reg = reg_base + SYSIO_SBUS_AFSR;
|
|
afar_reg = reg_base + SYSIO_SBUS_AFAR;
|
|
|
|
afsr = upa_readq(afsr_reg);
|
|
afar = upa_readq(afar_reg);
|
|
|
|
/* Clear primary/secondary error status bits. */
|
|
error_bits = afsr &
|
|
(SYSIO_SBAFSR_PLE | SYSIO_SBAFSR_PTO | SYSIO_SBAFSR_PBERR |
|
|
SYSIO_SBAFSR_SLE | SYSIO_SBAFSR_STO | SYSIO_SBAFSR_SBERR);
|
|
upa_writeq(error_bits, afsr_reg);
|
|
|
|
/* Log the error. */
|
|
printk("SYSIO[%x]: SBUS Error, primary error type[%s] read(%d)\n",
|
|
sbus->portid,
|
|
(((error_bits & SYSIO_SBAFSR_PLE) ?
|
|
"Late PIO Error" :
|
|
((error_bits & SYSIO_SBAFSR_PTO) ?
|
|
"Time Out" :
|
|
((error_bits & SYSIO_SBAFSR_PBERR) ?
|
|
"Error Ack" : "???")))),
|
|
(afsr & SYSIO_SBAFSR_RD) ? 1 : 0);
|
|
printk("SYSIO[%x]: size[%lx] MID[%lx]\n",
|
|
sbus->portid,
|
|
(afsr & SYSIO_SBAFSR_SIZE) >> 42UL,
|
|
(afsr & SYSIO_SBAFSR_MID) >> 37UL);
|
|
printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
|
|
printk("SYSIO[%x]: Secondary SBUS errors [", sbus->portid);
|
|
reported = 0;
|
|
if (afsr & SYSIO_SBAFSR_SLE) {
|
|
reported++;
|
|
printk("(Late PIO Error)");
|
|
}
|
|
if (afsr & SYSIO_SBAFSR_STO) {
|
|
reported++;
|
|
printk("(Time Out)");
|
|
}
|
|
if (afsr & SYSIO_SBAFSR_SBERR) {
|
|
reported++;
|
|
printk("(Error Ack)");
|
|
}
|
|
if (!reported)
|
|
printk("(none)");
|
|
printk("]\n");
|
|
|
|
/* XXX check iommu/strbuf for further error status XXX */
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#define ECC_CONTROL 0x0020UL
|
|
#define SYSIO_ECNTRL_ECCEN 0x8000000000000000UL /* Enable ECC Checking */
|
|
#define SYSIO_ECNTRL_UEEN 0x4000000000000000UL /* Enable UE Interrupts */
|
|
#define SYSIO_ECNTRL_CEEN 0x2000000000000000UL /* Enable CE Interrupts */
|
|
|
|
#define SYSIO_UE_INO 0x34
|
|
#define SYSIO_CE_INO 0x35
|
|
#define SYSIO_SBUSERR_INO 0x36
|
|
|
|
static void __init sysio_register_error_handlers(struct sbus_bus *sbus)
|
|
{
|
|
struct sbus_info *info = sbus->iommu;
|
|
struct iommu *iommu = &info->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, 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, 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, 0,
|
|
"SYSIO_SBERR", sbus) < 0) {
|
|
prom_printf("SYSIO[%x]: Cannot register SBUS Error interrupt.\n",
|
|
sbus->portid);
|
|
prom_halt();
|
|
}
|
|
|
|
/* Now turn the error interrupts on and also enable ECC checking. */
|
|
upa_writeq((SYSIO_ECNTRL_ECCEN |
|
|
SYSIO_ECNTRL_UEEN |
|
|
SYSIO_ECNTRL_CEEN),
|
|
reg_base + ECC_CONTROL);
|
|
|
|
control = upa_readq(iommu->write_complete_reg);
|
|
control |= 0x100UL; /* SBUS Error Interrupt Enable */
|
|
upa_writeq(control, iommu->write_complete_reg);
|
|
}
|
|
|
|
/* Boot time initialization. */
|
|
static void __init sbus_iommu_init(int __node, struct sbus_bus *sbus)
|
|
{
|
|
const struct linux_prom64_registers *pr;
|
|
struct device_node *dp;
|
|
struct sbus_info *info;
|
|
struct iommu *iommu;
|
|
struct strbuf *strbuf;
|
|
unsigned long regs, reg_base;
|
|
u64 control;
|
|
int i;
|
|
|
|
dp = of_find_node_by_phandle(__node);
|
|
|
|
sbus->portid = of_getintprop_default(dp, "upa-portid", -1);
|
|
|
|
pr = of_get_property(dp, "reg", NULL);
|
|
if (!pr) {
|
|
prom_printf("sbus_iommu_init: Cannot map SYSIO control registers.\n");
|
|
prom_halt();
|
|
}
|
|
regs = pr->phys_addr;
|
|
|
|
info = kzalloc(sizeof(*info), GFP_ATOMIC);
|
|
if (info == NULL) {
|
|
prom_printf("sbus_iommu_init: Fatal error, "
|
|
"kmalloc(info) failed\n");
|
|
prom_halt();
|
|
}
|
|
|
|
iommu = &info->iommu;
|
|
strbuf = &info->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;
|
|
|
|
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->write_complete_reg = regs + 0x2000UL;
|
|
|
|
/* Link into SYSIO software state. */
|
|
sbus->iommu = info;
|
|
|
|
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 */
|
|
sbus_iommu_table_init(iommu, IO_TSB_SIZE);
|
|
|
|
control = upa_readq(iommu->iommu_control);
|
|
control = ((7UL << 16UL) |
|
|
(0UL << 2UL) |
|
|
(1UL << 1UL) |
|
|
(1UL << 0UL));
|
|
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, 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->write_complete_reg);
|
|
|
|
/* Give the TSB to SYSIO. */
|
|
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, strbuf->strbuf_control);
|
|
|
|
/* Clear out the tags using diagnostics. */
|
|
for (i = 0; i < 16; i++) {
|
|
unsigned long ptag, ltag;
|
|
|
|
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;
|
|
|
|
upa_writeq(0UL, ptag);
|
|
upa_writeq(0UL, ltag);
|
|
}
|
|
|
|
/* Enable DVMA arbitration for all devices/slots. */
|
|
control = upa_readq(iommu->write_complete_reg);
|
|
control |= 0x3fUL;
|
|
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);
|
|
}
|
|
|
|
void sbus_fill_device_irq(struct sbus_dev *sdev)
|
|
{
|
|
struct device_node *dp = of_find_node_by_phandle(sdev->prom_node);
|
|
const struct linux_prom_irqs *irqs;
|
|
|
|
irqs = of_get_property(dp, "interrupts", NULL);
|
|
if (!irqs) {
|
|
sdev->irqs[0] = 0;
|
|
sdev->num_irqs = 0;
|
|
} else {
|
|
unsigned int pri = irqs[0].pri;
|
|
|
|
sdev->num_irqs = 1;
|
|
if (pri < 0x20)
|
|
pri += sdev->slot * 8;
|
|
|
|
sdev->irqs[0] = sbus_build_irq(sdev->bus, pri);
|
|
}
|
|
}
|
|
|
|
void __init sbus_arch_bus_ranges_init(struct device_node *pn, struct sbus_bus *sbus)
|
|
{
|
|
}
|
|
|
|
void __init sbus_setup_iommu(struct sbus_bus *sbus, struct device_node *dp)
|
|
{
|
|
sbus_iommu_init(dp->node, sbus);
|
|
}
|
|
|
|
void __init sbus_setup_arch_props(struct sbus_bus *sbus, struct device_node *dp)
|
|
{
|
|
}
|
|
|
|
int __init sbus_arch_preinit(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void __init sbus_arch_postinit(void)
|
|
{
|
|
extern void firetruck_init(void);
|
|
|
|
firetruck_init();
|
|
}
|