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raspberrypi-kernel
提交 fc67b16e 编写于 作者: L Linus Torvalds
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Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6.git

上级 e8108c98 2d29306b
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Showing with 5297 addition and 507 deletion
arch/ia64/Kconfig
浏览文件 @ fc67b16e
......@@ -329,7 +329,7 @@ menu "Power management and ACPI"
config PM
bool "Power Management support"
depends on IA64_GENERIC || IA64_DIG || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB
depends on !IA64_HP_SIM
default y
help
"Power Management" means that parts of your computer are shut
......
arch/ia64/configs/sn2_defconfig
浏览文件 @ fc67b16e
......@@ -574,6 +574,8 @@ CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_N_HDLC is not set
# CONFIG_STALDRV is not set
CONFIG_SGI_SNSC=y
CONFIG_SGI_TIOCX=y
CONFIG_SGI_MBCS=m
#
# Serial drivers
......
arch/ia64/hp/common/sba_iommu.c
浏览文件 @ fc67b16e
/*
** IA64 System Bus Adapter (SBA) I/O MMU manager
**
** (c) Copyright 2002-2004 Alex Williamson
** (c) Copyright 2002-2005 Alex Williamson
** (c) Copyright 2002-2003 Grant Grundler
** (c) Copyright 2002-2004 Hewlett-Packard Company
** (c) Copyright 2002-2005 Hewlett-Packard Company
**
** Portions (c) 2000 Grant Grundler (from parisc I/O MMU code)
** Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)
......@@ -459,21 +459,32 @@ get_iovp_order (unsigned long size)
* sba_search_bitmap - find free space in IO PDIR resource bitmap
* @ioc: IO MMU structure which owns the pdir we are interested in.
* @bits_wanted: number of entries we need.
* @use_hint: use res_hint to indicate where to start looking
*
* Find consecutive free bits in resource bitmap.
* Each bit represents one entry in the IO Pdir.
* Cool perf optimization: search for log2(size) bits at a time.
*/
static SBA_INLINE unsigned long
sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
{
unsigned long *res_ptr = ioc->res_hint;
unsigned long *res_ptr;
unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
unsigned long pide = ~0UL;
unsigned long flags, pide = ~0UL;
ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
ASSERT(res_ptr < res_end);
spin_lock_irqsave(&ioc->res_lock, flags);
/* Allow caller to force a search through the entire resource space */
if (likely(use_hint)) {
res_ptr = ioc->res_hint;
} else {
res_ptr = (ulong *)ioc->res_map;
ioc->res_bitshift = 0;
}
/*
* N.B. REO/Grande defect AR2305 can cause TLB fetch timeouts
* if a TLB entry is purged while in use. sba_mark_invalid()
......@@ -570,10 +581,12 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
prefetch(ioc->res_map);
ioc->res_hint = (unsigned long *) ioc->res_map;
ioc->res_bitshift = 0;
spin_unlock_irqrestore(&ioc->res_lock, flags);
return (pide);
found_it:
ioc->res_hint = res_ptr;
spin_unlock_irqrestore(&ioc->res_lock, flags);
return (pide);
}
......@@ -594,36 +607,36 @@ sba_alloc_range(struct ioc *ioc, size_t size)
unsigned long itc_start;
#endif
unsigned long pide;
unsigned long flags;
ASSERT(pages_needed);
ASSERT(0 == (size & ~iovp_mask));
spin_lock_irqsave(&ioc->res_lock, flags);
#ifdef PDIR_SEARCH_TIMING
itc_start = ia64_get_itc();
#endif
/*
** "seek and ye shall find"...praying never hurts either...
*/
pide = sba_search_bitmap(ioc, pages_needed);
pide = sba_search_bitmap(ioc, pages_needed, 1);
if (unlikely(pide >= (ioc->res_size << 3))) {
pide = sba_search_bitmap(ioc, pages_needed);
pide = sba_search_bitmap(ioc, pages_needed, 0);
if (unlikely(pide >= (ioc->res_size << 3))) {
#if DELAYED_RESOURCE_CNT > 0
unsigned long flags;
/*
** With delayed resource freeing, we can give this one more shot. We're
** getting close to being in trouble here, so do what we can to make this
** one count.
*/
spin_lock(&ioc->saved_lock);
spin_lock_irqsave(&ioc->saved_lock, flags);
if (ioc->saved_cnt > 0) {
struct sba_dma_pair *d;
int cnt = ioc->saved_cnt;
d = &(ioc->saved[ioc->saved_cnt]);
d = &(ioc->saved[ioc->saved_cnt - 1]);
spin_lock(&ioc->res_lock);
while (cnt--) {
sba_mark_invalid(ioc, d->iova, d->size);
sba_free_range(ioc, d->iova, d->size);
......@@ -631,10 +644,11 @@ sba_alloc_range(struct ioc *ioc, size_t size)
}
ioc->saved_cnt = 0;
READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
spin_unlock(&ioc->res_lock);
}
spin_unlock(&ioc->saved_lock);
spin_unlock_irqrestore(&ioc->saved_lock, flags);
pide = sba_search_bitmap(ioc, pages_needed);
pide = sba_search_bitmap(ioc, pages_needed, 0);
if (unlikely(pide >= (ioc->res_size << 3)))
panic(__FILE__ ": I/O MMU @ %p is out of mapping resources\n",
ioc->ioc_hpa);
......@@ -664,8 +678,6 @@ sba_alloc_range(struct ioc *ioc, size_t size)
(uint) ((unsigned long) ioc->res_hint - (unsigned long) ioc->res_map),
ioc->res_bitshift );
spin_unlock_irqrestore(&ioc->res_lock, flags);
return (pide);
}
......@@ -950,6 +962,30 @@ sba_map_single(struct device *dev, void *addr, size_t size, int dir)
return SBA_IOVA(ioc, iovp, offset);
}
#ifdef ENABLE_MARK_CLEAN
static SBA_INLINE void
sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size)
{
u32 iovp = (u32) SBA_IOVP(ioc,iova);
int off = PDIR_INDEX(iovp);
void *addr;
if (size <= iovp_size) {
addr = phys_to_virt(ioc->pdir_base[off] &
~0xE000000000000FFFULL);
mark_clean(addr, size);
} else {
do {
addr = phys_to_virt(ioc->pdir_base[off] &
~0xE000000000000FFFULL);
mark_clean(addr, min(size, iovp_size));
off++;
size -= iovp_size;
} while (size > 0);
}
}
#endif
/**
* sba_unmap_single - unmap one IOVA and free resources
* @dev: instance of PCI owned by the driver that's asking.
......@@ -995,6 +1031,10 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
size += offset;
size = ROUNDUP(size, iovp_size);
#ifdef ENABLE_MARK_CLEAN
if (dir == DMA_FROM_DEVICE)
sba_mark_clean(ioc, iova, size);
#endif
#if DELAYED_RESOURCE_CNT > 0
spin_lock_irqsave(&ioc->saved_lock, flags);
......@@ -1021,30 +1061,6 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif /* DELAYED_RESOURCE_CNT == 0 */
#ifdef ENABLE_MARK_CLEAN
if (dir == DMA_FROM_DEVICE) {
u32 iovp = (u32) SBA_IOVP(ioc,iova);
int off = PDIR_INDEX(iovp);
void *addr;
if (size <= iovp_size) {
addr = phys_to_virt(ioc->pdir_base[off] &
~0xE000000000000FFFULL);
mark_clean(addr, size);
} else {
size_t byte_cnt = size;
do {
addr = phys_to_virt(ioc->pdir_base[off] &
~0xE000000000000FFFULL);
mark_clean(addr, min(byte_cnt, iovp_size));
off++;
byte_cnt -= iovp_size;
} while (byte_cnt > 0);
}
}
#endif
}
......
arch/ia64/kernel/entry.S
浏览文件 @ fc67b16e
......@@ -728,12 +728,8 @@ ENTRY(ia64_leave_syscall)
mov f8=f0 // clear f8
;;
ld8 r30=[r2],16 // M0|1 load cr.ifs
mov.m ar.ssd=r0 // M2 clear ar.ssd
cmp.eq p9,p0=r0,r0 // set p9 to indicate that we should restore cr.ifs
;;
ld8 r25=[r3],16 // M0|1 load ar.unat
mov.m ar.csd=r0 // M2 clear ar.csd
mov r22=r0 // clear r22
cmp.eq p9,p0=r0,r0 // set p9 to indicate that we should restore cr.ifs
;;
ld8 r26=[r2],PT(B0)-PT(AR_PFS) // M0|1 load ar.pfs
(pKStk) mov r22=psr // M2 read PSR now that interrupts are disabled
......@@ -756,11 +752,15 @@ ENTRY(ia64_leave_syscall)
mov f7=f0 // clear f7
;;
ld8.fill r12=[r2] // restore r12 (sp)
mov.m ar.ssd=r0 // M2 clear ar.ssd
mov r22=r0 // clear r22
ld8.fill r15=[r3] // restore r15
(pUStk) st1 [r14]=r17
addl r3=THIS_CPU(ia64_phys_stacked_size_p8),r0
;;
(pUStk) ld4 r3=[r3] // r3 = cpu_data->phys_stacked_size_p8
(pUStk) st1 [r14]=r17
(pUStk) ld4 r17=[r3] // r17 = cpu_data->phys_stacked_size_p8
mov.m ar.csd=r0 // M2 clear ar.csd
mov b6=r18 // I0 restore b6
;;
mov r14=r0 // clear r14
......
arch/ia64/kernel/iosapic.c
浏览文件 @ fc67b16e
......@@ -79,6 +79,7 @@
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/string.h>
#include <linux/bootmem.h>
#include <asm/delay.h>
#include <asm/hw_irq.h>
......@@ -98,19 +99,30 @@
#define DBG(fmt...)
#endif
#define NR_PREALLOCATE_RTE_ENTRIES (PAGE_SIZE / sizeof(struct iosapic_rte_info))
#define RTE_PREALLOCATED (1)
static DEFINE_SPINLOCK(iosapic_lock);
/* These tables map IA-64 vectors to the IOSAPIC pin that generates this vector. */
static struct iosapic_intr_info {
struct iosapic_rte_info {
struct list_head rte_list; /* node in list of RTEs sharing the same vector */
char __iomem *addr; /* base address of IOSAPIC */
u32 low32; /* current value of low word of Redirection table entry */
unsigned int gsi_base; /* first GSI assigned to this IOSAPIC */
char rte_index; /* IOSAPIC RTE index (-1 => not an IOSAPIC interrupt) */
char rte_index; /* IOSAPIC RTE index */
int refcnt; /* reference counter */
unsigned int flags; /* flags */
} ____cacheline_aligned;
static struct iosapic_intr_info {
struct list_head rtes; /* RTEs using this vector (empty => not an IOSAPIC interrupt) */
int count; /* # of RTEs that shares this vector */
u32 low32; /* current value of low word of Redirection table entry */
unsigned int dest; /* destination CPU physical ID */
unsigned char dmode : 3; /* delivery mode (see iosapic.h) */
unsigned char polarity: 1; /* interrupt polarity (see iosapic.h) */
unsigned char trigger : 1; /* trigger mode (see iosapic.h) */
int refcnt; /* reference counter */
} iosapic_intr_info[IA64_NUM_VECTORS];
static struct iosapic {
......@@ -126,6 +138,8 @@ static int num_iosapic;
static unsigned char pcat_compat __initdata; /* 8259 compatibility flag */
static int iosapic_kmalloc_ok;
static LIST_HEAD(free_rte_list);
/*
* Find an IOSAPIC associated with a GSI
......@@ -147,10 +161,12 @@ static inline int
_gsi_to_vector (unsigned int gsi)
{
struct iosapic_intr_info *info;
struct iosapic_rte_info *rte;
for (info = iosapic_intr_info; info < iosapic_intr_info + IA64_NUM_VECTORS; ++info)
if (info->gsi_base + info->rte_index == gsi)
return info - iosapic_intr_info;
list_for_each_entry(rte, &info->rtes, rte_list)
if (rte->gsi_base + rte->rte_index == gsi)
return info - iosapic_intr_info;
return -1;
}
......@@ -167,33 +183,52 @@ gsi_to_vector (unsigned int gsi)
int
gsi_to_irq (unsigned int gsi)
{
unsigned long flags;
int irq;
/*
* XXX fix me: this assumes an identity mapping vetween IA-64 vector and Linux irq
* numbers...
*/
return _gsi_to_vector(gsi);
spin_lock_irqsave(&iosapic_lock, flags);
{
irq = _gsi_to_vector(gsi);
}
spin_unlock_irqrestore(&iosapic_lock, flags);
return irq;
}
static struct iosapic_rte_info *gsi_vector_to_rte(unsigned int gsi, unsigned int vec)
{
struct iosapic_rte_info *rte;
list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list)
if (rte->gsi_base + rte->rte_index == gsi)
return rte;
return NULL;
}
static void
set_rte (unsigned int vector, unsigned int dest, int mask)
set_rte (unsigned int gsi, unsigned int vector, unsigned int dest, int mask)
{
unsigned long pol, trigger, dmode;
u32 low32, high32;
char __iomem *addr;
int rte_index;
char redir;
struct iosapic_rte_info *rte;
DBG(KERN_DEBUG"IOSAPIC: routing vector %d to 0x%x\n", vector, dest);
rte_index = iosapic_intr_info[vector].rte_index;
if (rte_index < 0)
rte = gsi_vector_to_rte(gsi, vector);
if (!rte)
return; /* not an IOSAPIC interrupt */
addr = iosapic_intr_info[vector].addr;
rte_index = rte->rte_index;
addr = rte->addr;
pol = iosapic_intr_info[vector].polarity;
trigger = iosapic_intr_info[vector].trigger;
dmode = iosapic_intr_info[vector].dmode;
vector &= (~IA64_IRQ_REDIRECTED);
redir = (dmode == IOSAPIC_LOWEST_PRIORITY) ? 1 : 0;
......@@ -221,6 +256,7 @@ set_rte (unsigned int vector, unsigned int dest, int mask)
iosapic_write(addr, IOSAPIC_RTE_HIGH(rte_index), high32);
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
iosapic_intr_info[vector].low32 = low32;
iosapic_intr_info[vector].dest = dest;
}
static void
......@@ -237,18 +273,20 @@ mask_irq (unsigned int irq)
u32 low32;
int rte_index;
ia64_vector vec = irq_to_vector(irq);
struct iosapic_rte_info *rte;
addr = iosapic_intr_info[vec].addr;
rte_index = iosapic_intr_info[vec].rte_index;
if (rte_index < 0)
if (list_empty(&iosapic_intr_info[vec].rtes))
return; /* not an IOSAPIC interrupt! */
spin_lock_irqsave(&iosapic_lock, flags);
{
/* set only the mask bit */
low32 = iosapic_intr_info[vec].low32 |= IOSAPIC_MASK;
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) {
addr = rte->addr;
rte_index = rte->rte_index;
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
}
}
spin_unlock_irqrestore(&iosapic_lock, flags);
}
......@@ -261,16 +299,19 @@ unmask_irq (unsigned int irq)
u32 low32;
int rte_index;
ia64_vector vec = irq_to_vector(irq);
struct iosapic_rte_info *rte;
addr = iosapic_intr_info[vec].addr;
rte_index = iosapic_intr_info[vec].rte_index;
if (rte_index < 0)
if (list_empty(&iosapic_intr_info[vec].rtes))
return; /* not an IOSAPIC interrupt! */
spin_lock_irqsave(&iosapic_lock, flags);
{
low32 = iosapic_intr_info[vec].low32 &= ~IOSAPIC_MASK;
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) {
addr = rte->addr;
rte_index = rte->rte_index;
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
}
}
spin_unlock_irqrestore(&iosapic_lock, flags);
}
......@@ -286,6 +327,7 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
char __iomem *addr;
int redir = (irq & IA64_IRQ_REDIRECTED) ? 1 : 0;
ia64_vector vec;
struct iosapic_rte_info *rte;
irq &= (~IA64_IRQ_REDIRECTED);
vec = irq_to_vector(irq);
......@@ -295,10 +337,7 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
dest = cpu_physical_id(first_cpu(mask));
rte_index = iosapic_intr_info[vec].rte_index;
addr = iosapic_intr_info[vec].addr;
if (rte_index < 0)
if (list_empty(&iosapic_intr_info[vec].rtes))
return; /* not an IOSAPIC interrupt */
set_irq_affinity_info(irq, dest, redir);
......@@ -318,8 +357,13 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask)
low32 |= (IOSAPIC_FIXED << IOSAPIC_DELIVERY_SHIFT);
iosapic_intr_info[vec].low32 = low32;
iosapic_write(addr, IOSAPIC_RTE_HIGH(rte_index), high32);
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
iosapic_intr_info[vec].dest = dest;
list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) {
addr = rte->addr;
rte_index = rte->rte_index;
iosapic_write(addr, IOSAPIC_RTE_HIGH(rte_index), high32);
iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32);
}
}
spin_unlock_irqrestore(&iosapic_lock, flags);
#endif
......@@ -340,9 +384,11 @@ static void
iosapic_end_level_irq (unsigned int irq)
{
ia64_vector vec = irq_to_vector(irq);
struct iosapic_rte_info *rte;
move_irq(irq);
iosapic_eoi(iosapic_intr_info[vec].addr, vec);
list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list)
iosapic_eoi(rte->addr, vec);
}
#define iosapic_shutdown_level_irq mask_irq
......@@ -422,6 +468,34 @@ iosapic_version (char __iomem *addr)
return iosapic_read(addr, IOSAPIC_VERSION);
}
static int iosapic_find_sharable_vector (unsigned long trigger, unsigned long pol)
{
int i, vector = -1, min_count = -1;
struct iosapic_intr_info *info;
/*
* shared vectors for edge-triggered interrupts are not
* supported yet
*/
if (trigger == IOSAPIC_EDGE)
return -1;
for (i = IA64_FIRST_DEVICE_VECTOR; i <= IA64_LAST_DEVICE_VECTOR; i++) {
info = &iosapic_intr_info[i];
if (info->trigger == trigger && info->polarity == pol &&
(info->dmode == IOSAPIC_FIXED || info->dmode == IOSAPIC_LOWEST_PRIORITY)) {
if (min_count == -1 || info->count < min_count) {
vector = i;
min_count = info->count;
}
}
}
if (vector < 0)
panic("%s: out of interrupt vectors!\n", __FUNCTION__);
return vector;
}
/*
* if the given vector is already owned by other,
* assign a new vector for the other and make the vector available
......@@ -431,19 +505,63 @@ iosapic_reassign_vector (int vector)
{
int new_vector;
if (iosapic_intr_info[vector].rte_index >= 0 || iosapic_intr_info[vector].addr
|| iosapic_intr_info[vector].gsi_base || iosapic_intr_info[vector].dmode
|| iosapic_intr_info[vector].polarity || iosapic_intr_info[vector].trigger)
{
if (!list_empty(&iosapic_intr_info[vector].rtes)) {
new_vector = assign_irq_vector(AUTO_ASSIGN);
printk(KERN_INFO "Reassigning vector %d to %d\n", vector, new_vector);
memcpy(&iosapic_intr_info[new_vector], &iosapic_intr_info[vector],
sizeof(struct iosapic_intr_info));
INIT_LIST_HEAD(&iosapic_intr_info[new_vector].rtes);
list_move(iosapic_intr_info[vector].rtes.next, &iosapic_intr_info[new_vector].rtes);
memset(&iosapic_intr_info[vector], 0, sizeof(struct iosapic_intr_info));
iosapic_intr_info[vector].rte_index = -1;
iosapic_intr_info[vector].low32 = IOSAPIC_MASK;
INIT_LIST_HEAD(&iosapic_intr_info[vector].rtes);
}
}
static struct iosapic_rte_info *iosapic_alloc_rte (void)
{
int i;
struct iosapic_rte_info *rte;
int preallocated = 0;
if (!iosapic_kmalloc_ok && list_empty(&free_rte_list)) {
rte = alloc_bootmem(sizeof(struct iosapic_rte_info) * NR_PREALLOCATE_RTE_ENTRIES);
if (!rte)
return NULL;
for (i = 0; i < NR_PREALLOCATE_RTE_ENTRIES; i++, rte++)
list_add(&rte->rte_list, &free_rte_list);
}
if (!list_empty(&free_rte_list)) {
rte = list_entry(free_rte_list.next, struct iosapic_rte_info, rte_list);
list_del(&rte->rte_list);
preallocated++;
} else {
rte = kmalloc(sizeof(struct iosapic_rte_info), GFP_ATOMIC);
if (!rte)
return NULL;
}
memset(rte, 0, sizeof(struct iosapic_rte_info));
if (preallocated)
rte->flags |= RTE_PREALLOCATED;
return rte;
}
static void iosapic_free_rte (struct iosapic_rte_info *rte)
{
if (rte->flags & RTE_PREALLOCATED)
list_add_tail(&rte->rte_list, &free_rte_list);
else
kfree(rte);
}
static inline int vector_is_shared (int vector)
{
return (iosapic_intr_info[vector].count > 1);
}
static void
register_intr (unsigned int gsi, int vector, unsigned char delivery,
unsigned long polarity, unsigned long trigger)
......@@ -454,6 +572,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
int index;
unsigned long gsi_base;
void __iomem *iosapic_address;
struct iosapic_rte_info *rte;
index = find_iosapic(gsi);
if (index < 0) {
......@@ -464,14 +583,33 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
iosapic_address = iosapic_lists[index].addr;
gsi_base = iosapic_lists[index].gsi_base;
rte_index = gsi - gsi_base;
iosapic_intr_info[vector].rte_index = rte_index;
rte = gsi_vector_to_rte(gsi, vector);
if (!rte) {
rte = iosapic_alloc_rte();
if (!rte) {
printk(KERN_WARNING "%s: cannot allocate memory\n", __FUNCTION__);
return;
}
rte_index = gsi - gsi_base;
rte->rte_index = rte_index;
rte->addr = iosapic_address;
rte->gsi_base = gsi_base;
rte->refcnt++;
list_add_tail(&rte->rte_list, &iosapic_intr_info[vector].rtes);
iosapic_intr_info[vector].count++;
}
else if (vector_is_shared(vector)) {
struct iosapic_intr_info *info = &iosapic_intr_info[vector];
if (info->trigger != trigger || info->polarity != polarity) {
printk (KERN_WARNING "%s: cannot override the interrupt\n", __FUNCTION__);
return;
}
}
iosapic_intr_info[vector].polarity = polarity;
iosapic_intr_info[vector].dmode = delivery;
iosapic_intr_info[vector].addr = iosapic_address;
iosapic_intr_info[vector].gsi_base = gsi_base;
iosapic_intr_info[vector].trigger = trigger;
iosapic_intr_info[vector].refcnt++;
if (trigger == IOSAPIC_EDGE)
irq_type = &irq_type_iosapic_edge;
......@@ -493,6 +631,13 @@ get_target_cpu (unsigned int gsi, int vector)
#ifdef CONFIG_SMP
static int cpu = -1;
/*
* In case of vector shared by multiple RTEs, all RTEs that
* share the vector need to use the same destination CPU.
*/
if (!list_empty(&iosapic_intr_info[vector].rtes))
return iosapic_intr_info[vector].dest;
/*
* If the platform supports redirection via XTP, let it
* distribute interrupts.
......@@ -565,10 +710,12 @@ int
iosapic_register_intr (unsigned int gsi,
unsigned long polarity, unsigned long trigger)
{
int vector;
int vector, mask = 1;
unsigned int dest;
unsigned long flags;
struct iosapic_rte_info *rte;
u32 low32;
again:
/*
* If this GSI has already been registered (i.e., it's a
* shared interrupt, or we lost a race to register it),
......@@ -578,19 +725,45 @@ iosapic_register_intr (unsigned int gsi,
{
vector = gsi_to_vector(gsi);
if (vector > 0) {
iosapic_intr_info[vector].refcnt++;
rte = gsi_vector_to_rte(gsi, vector);
rte->refcnt++;
spin_unlock_irqrestore(&iosapic_lock, flags);
return vector;
}
}
spin_unlock_irqrestore(&iosapic_lock, flags);
/* If vector is running out, we try to find a sharable vector */
vector = assign_irq_vector_nopanic(AUTO_ASSIGN);
if (vector < 0)
vector = iosapic_find_sharable_vector(trigger, polarity);
spin_lock_irqsave(&irq_descp(vector)->lock, flags);
spin_lock(&iosapic_lock);
{
if (gsi_to_vector(gsi) > 0) {
if (list_empty(&iosapic_intr_info[vector].rtes))
free_irq_vector(vector);
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&irq_descp(vector)->lock, flags);
goto again;
}
vector = assign_irq_vector(AUTO_ASSIGN);
dest = get_target_cpu(gsi, vector);
register_intr(gsi, vector, IOSAPIC_LOWEST_PRIORITY,
polarity, trigger);
polarity, trigger);
set_rte(vector, dest, 1);
/*
* If the vector is shared and already unmasked for
* other interrupt sources, don't mask it.
*/
low32 = iosapic_intr_info[vector].low32;
if (vector_is_shared(vector) && !(low32 & IOSAPIC_MASK))
mask = 0;
set_rte(gsi, vector, dest, mask);
}
spin_unlock_irqrestore(&iosapic_lock, flags);
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&irq_descp(vector)->lock, flags);
printk(KERN_INFO "GSI %u (%s, %s) -> CPU %d (0x%04x) vector %d\n",
gsi, (trigger == IOSAPIC_EDGE ? "edge" : "level"),
......@@ -607,8 +780,10 @@ iosapic_unregister_intr (unsigned int gsi)
unsigned long flags;
int irq, vector;
irq_desc_t *idesc;
int rte_index;
u32 low32;
unsigned long trigger, polarity;
unsigned int dest;
struct iosapic_rte_info *rte;
/*
* If the irq associated with the gsi is not found,
......@@ -627,54 +802,56 @@ iosapic_unregister_intr (unsigned int gsi)
spin_lock_irqsave(&idesc->lock, flags);
spin_lock(&iosapic_lock);
{
rte_index = iosapic_intr_info[vector].rte_index;
if (rte_index < 0) {
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&idesc->lock, flags);
if ((rte = gsi_vector_to_rte(gsi, vector)) == NULL) {
printk(KERN_ERR "iosapic_unregister_intr(%u) unbalanced\n", gsi);
WARN_ON(1);
return;
goto out;
}
if (--iosapic_intr_info[vector].refcnt > 0) {
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&idesc->lock, flags);
return;
}
if (--rte->refcnt > 0)
goto out;
/*
* If interrupt handlers still exist on the irq
* associated with the gsi, don't unregister the
* interrupt.
*/
if (idesc->action) {
iosapic_intr_info[vector].refcnt++;
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&idesc->lock, flags);
printk(KERN_WARNING "Cannot unregister GSI. IRQ %u is still in use.\n", irq);
return;
}
/* Mask the interrupt */
low32 = iosapic_intr_info[vector].low32 | IOSAPIC_MASK;
iosapic_write(rte->addr, IOSAPIC_RTE_LOW(rte->rte_index), low32);
/* Clear the interrupt controller descriptor. */
idesc->handler = &no_irq_type;
/* Remove the rte entry from the list */
list_del(&rte->rte_list);
iosapic_intr_info[vector].count--;
iosapic_free_rte(rte);
trigger = iosapic_intr_info[vector].trigger;
trigger = iosapic_intr_info[vector].trigger;
polarity = iosapic_intr_info[vector].polarity;
dest = iosapic_intr_info[vector].dest;
printk(KERN_INFO "GSI %u (%s, %s) -> CPU %d (0x%04x) vector %d unregistered\n",
gsi, (trigger == IOSAPIC_EDGE ? "edge" : "level"),
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
cpu_logical_id(dest), dest, vector);
if (list_empty(&iosapic_intr_info[vector].rtes)) {
/* Sanity check */
BUG_ON(iosapic_intr_info[vector].count);
/* Clear the interrupt controller descriptor */
idesc->handler = &no_irq_type;
/* Clear the interrupt information */
memset(&iosapic_intr_info[vector], 0, sizeof(struct iosapic_intr_info));
iosapic_intr_info[vector].low32 |= IOSAPIC_MASK;
INIT_LIST_HEAD(&iosapic_intr_info[vector].rtes);
if (idesc->action) {
printk(KERN_ERR "interrupt handlers still exist on IRQ %u\n", irq);
WARN_ON(1);
}
/* Clear the interrupt information. */
memset(&iosapic_intr_info[vector], 0, sizeof(struct iosapic_intr_info));
iosapic_intr_info[vector].rte_index = -1; /* mark as unused */
/* Free the interrupt vector */
free_irq_vector(vector);
}
}
out:
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&idesc->lock, flags);
/* Free the interrupt vector */
free_irq_vector(vector);
printk(KERN_INFO "GSI %u (%s, %s) -> vector %d unregisterd.\n",
gsi, (trigger == IOSAPIC_EDGE ? "edge" : "level"),
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
vector);
}
#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
......@@ -724,7 +901,7 @@ iosapic_register_platform_intr (u32 int_type, unsigned int gsi,
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
cpu_logical_id(dest), dest, vector);
set_rte(vector, dest, mask);
set_rte(gsi, vector, dest, mask);
return vector;
}
......@@ -750,7 +927,7 @@ iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
polarity == IOSAPIC_POL_HIGH ? "high" : "low",
cpu_logical_id(dest), dest, vector);
set_rte(vector, dest, 1);
set_rte(gsi, vector, dest, 1);
}
void __init
......@@ -758,8 +935,10 @@ iosapic_system_init (int system_pcat_compat)
{
int vector;
for (vector = 0; vector < IA64_NUM_VECTORS; ++vector)
iosapic_intr_info[vector].rte_index = -1; /* mark as unused */
for (vector = 0; vector < IA64_NUM_VECTORS; ++vector) {
iosapic_intr_info[vector].low32 = IOSAPIC_MASK;
INIT_LIST_HEAD(&iosapic_intr_info[vector].rtes); /* mark as unused */
}
pcat_compat = system_pcat_compat;
if (pcat_compat) {
......@@ -825,3 +1004,10 @@ map_iosapic_to_node(unsigned int gsi_base, int node)
return;
}
#endif
static int __init iosapic_enable_kmalloc (void)
{
iosapic_kmalloc_ok = 1;
return 0;
}
core_initcall (iosapic_enable_kmalloc);
arch/ia64/kernel/irq_ia64.c
浏览文件 @ fc67b16e
......@@ -63,20 +63,30 @@ EXPORT_SYMBOL(isa_irq_to_vector_map);
static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)];
int
assign_irq_vector (int irq)
assign_irq_vector_nopanic (int irq)
{
int pos, vector;
again:
pos = find_first_zero_bit(ia64_vector_mask, IA64_NUM_DEVICE_VECTORS);
vector = IA64_FIRST_DEVICE_VECTOR + pos;
if (vector > IA64_LAST_DEVICE_VECTOR)
/* XXX could look for sharable vectors instead of panic'ing... */
panic("assign_irq_vector: out of interrupt vectors!");
return -1;
if (test_and_set_bit(pos, ia64_vector_mask))
goto again;
return vector;
}
int
assign_irq_vector (int irq)
{
int vector = assign_irq_vector_nopanic(irq);
if (vector < 0)
panic("assign_irq_vector: out of interrupt vectors!");
return vector;
}
void
free_irq_vector (int vector)
{
......
arch/ia64/kernel/perfmon.c
浏览文件 @ fc67b16e
......@@ -479,14 +479,6 @@ typedef struct {
#define PFM_CMD_ARG_MANY -1 /* cannot be zero */
typedef struct {
int debug; /* turn on/off debugging via syslog */
int debug_ovfl; /* turn on/off debug printk in overflow handler */
int fastctxsw; /* turn on/off fast (unsecure) ctxsw */
int expert_mode; /* turn on/off value checking */
int debug_pfm_read;
} pfm_sysctl_t;
typedef struct {
unsigned long pfm_spurious_ovfl_intr_count; /* keep track of spurious ovfl interrupts */
unsigned long pfm_replay_ovfl_intr_count; /* keep track of replayed ovfl interrupts */
......@@ -514,8 +506,8 @@ static LIST_HEAD(pfm_buffer_fmt_list);
static pmu_config_t *pmu_conf;
/* sysctl() controls */
static pfm_sysctl_t pfm_sysctl;
int pfm_debug_var;
pfm_sysctl_t pfm_sysctl;
EXPORT_SYMBOL(pfm_sysctl);
static ctl_table pfm_ctl_table[]={
{1, "debug", &pfm_sysctl.debug, sizeof(int), 0666, NULL, &proc_dointvec, NULL,},
......@@ -1576,7 +1568,7 @@ pfm_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos)
goto abort_locked;
}
DPRINT(("[%d] fd=%d type=%d\n", current->pid, msg->pfm_gen_msg.msg_ctx_fd, msg->pfm_gen_msg.msg_type));
DPRINT(("fd=%d type=%d\n", msg->pfm_gen_msg.msg_ctx_fd, msg->pfm_gen_msg.msg_type));
ret = -EFAULT;
if(copy_to_user(buf, msg, sizeof(pfm_msg_t)) == 0) ret = sizeof(pfm_msg_t);
......@@ -3695,8 +3687,6 @@ pfm_debug(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
pfm_sysctl.debug = m == 0 ? 0 : 1;
pfm_debug_var = pfm_sysctl.debug;
printk(KERN_INFO "perfmon debugging %s (timing reset)\n", pfm_sysctl.debug ? "on" : "off");
if (m == 0) {
......@@ -4996,13 +4986,21 @@ pfm_context_force_terminate(pfm_context_t *ctx, struct pt_regs *regs)
}
static int pfm_ovfl_notify_user(pfm_context_t *ctx, unsigned long ovfl_pmds);
/*
* pfm_handle_work() can be called with interrupts enabled
* (TIF_NEED_RESCHED) or disabled. The down_interruptible
* call may sleep, therefore we must re-enable interrupts
* to avoid deadlocks. It is safe to do so because this function
* is called ONLY when returning to user level (PUStk=1), in which case
* there is no risk of kernel stack overflow due to deep
* interrupt nesting.
*/
void
pfm_handle_work(void)
{
pfm_context_t *ctx;
struct pt_regs *regs;
unsigned long flags;
unsigned long flags, dummy_flags;
unsigned long ovfl_regs;
unsigned int reason;
int ret;
......@@ -5039,18 +5037,15 @@ pfm_handle_work(void)
//if (CTX_OVFL_NOBLOCK(ctx)) goto skip_blocking;
if (reason == PFM_TRAP_REASON_RESET) goto skip_blocking;
/*
* restore interrupt mask to what it was on entry.
* Could be enabled/diasbled.
*/
UNPROTECT_CTX(ctx, flags);
/*
* pfm_handle_work() is currently called with interrupts disabled.
* The down_interruptible call may sleep, therefore we
* must re-enable interrupts to avoid deadlocks. It is
* safe to do so because this function is called ONLY
* when returning to user level (PUStk=1), in which case
* there is no risk of kernel stack overflow due to deep
* interrupt nesting.
*/
BUG_ON(flags & IA64_PSR_I);
/*
* force interrupt enable because of down_interruptible()
*/
local_irq_enable();
DPRINT(("before block sleeping\n"));
......@@ -5064,12 +5059,12 @@ pfm_handle_work(void)
DPRINT(("after block sleeping ret=%d\n", ret));
/*
* disable interrupts to restore state we had upon entering
* this function
* lock context and mask interrupts again
* We save flags into a dummy because we may have
* altered interrupts mask compared to entry in this
* function.
*/
local_irq_disable();
PROTECT_CTX(ctx, flags);
PROTECT_CTX(ctx, dummy_flags);
/*
* we need to read the ovfl_regs only after wake-up
......@@ -5095,7 +5090,9 @@ pfm_handle_work(void)
ctx->ctx_ovfl_regs[0] = 0UL;
nothing_to_do:
/*
* restore flags as they were upon entry
*/
UNPROTECT_CTX(ctx, flags);
}
......
arch/ia64/kernel/perfmon_default_smpl.c
浏览文件 @ fc67b16e
......@@ -20,24 +20,17 @@ MODULE_AUTHOR("Stephane Eranian <eranian@hpl.hp.com>");
MODULE_DESCRIPTION("perfmon default sampling format");
MODULE_LICENSE("GPL");
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug, "debug");
MODULE_PARM(debug_ovfl, "i");
MODULE_PARM_DESC(debug_ovfl, "debug ovfl");
#define DEFAULT_DEBUG 1
#ifdef DEFAULT_DEBUG
#define DPRINT(a) \
do { \
if (unlikely(debug >0)) { printk("%s.%d: CPU%d ", __FUNCTION__, __LINE__, smp_processor_id()); printk a; } \
if (unlikely(pfm_sysctl.debug >0)) { printk("%s.%d: CPU%d ", __FUNCTION__, __LINE__, smp_processor_id()); printk a; } \
} while (0)
#define DPRINT_ovfl(a) \
do { \
if (unlikely(debug_ovfl >0)) { printk("%s.%d: CPU%d ", __FUNCTION__, __LINE__, smp_processor_id()); printk a; } \
if (unlikely(pfm_sysctl.debug > 0 && pfm_sysctl.debug_ovfl >0)) { printk("%s.%d: CPU%d ", __FUNCTION__, __LINE__, smp_processor_id()); printk a; } \
} while (0)
#else
......@@ -45,8 +38,6 @@ MODULE_PARM_DESC(debug_ovfl, "debug ovfl");
#define DPRINT_ovfl(a)
#endif
static int debug, debug_ovfl;
static int
default_validate(struct task_struct *task, unsigned int flags, int cpu, void *data)
{
......
arch/ia64/kernel/setup.c
浏览文件 @ fc67b16e
......@@ -4,10 +4,15 @@
* Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
* Stephane Eranian <eranian@hpl.hp.com>
* Copyright (C) 2000, Rohit Seth <rohit.seth@intel.com>
* Copyright (C) 2000, 2004 Intel Corp
* Rohit Seth <rohit.seth@intel.com>
* Suresh Siddha <suresh.b.siddha@intel.com>
* Gordon Jin <gordon.jin@intel.com>
* Copyright (C) 1999 VA Linux Systems
* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
*
* 12/26/04 S.Siddha, G.Jin, R.Seth
* Add multi-threading and multi-core detection
* 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo().
* 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map
* 03/31/00 R.Seth cpu_initialized and current->processor fixes
......@@ -296,6 +301,34 @@ mark_bsp_online (void)
#endif
}
#ifdef CONFIG_SMP
static void
check_for_logical_procs (void)
{
pal_logical_to_physical_t info;
s64 status;
status = ia64_pal_logical_to_phys(0, &info);
if (status == -1) {
printk(KERN_INFO "No logical to physical processor mapping "
"available\n");
return;
}
if (status) {
printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n",
status);
return;
}
/*
* Total number of siblings that BSP has. Though not all of them
* may have booted successfully. The correct number of siblings
* booted is in info.overview_num_log.
*/
smp_num_siblings = info.overview_tpc;
smp_num_cpucores = info.overview_cpp;
}
#endif
void __init
setup_arch (char **cmdline_p)
{
......@@ -356,6 +389,19 @@ setup_arch (char **cmdline_p)
#ifdef CONFIG_SMP
cpu_physical_id(0) = hard_smp_processor_id();
cpu_set(0, cpu_sibling_map[0]);
cpu_set(0, cpu_core_map[0]);
check_for_logical_procs();
if (smp_num_cpucores > 1)
printk(KERN_INFO
"cpu package is Multi-Core capable: number of cores=%d\n",
smp_num_cpucores);
if (smp_num_siblings > 1)
printk(KERN_INFO
"cpu package is Multi-Threading capable: number of siblings=%d\n",
smp_num_siblings);
#endif
cpu_init(); /* initialize the bootstrap CPU */
......@@ -459,12 +505,23 @@ show_cpuinfo (struct seq_file *m, void *v)
"cpu regs : %u\n"
"cpu MHz : %lu.%06lu\n"
"itc MHz : %lu.%06lu\n"
"BogoMIPS : %lu.%02lu\n\n",
"BogoMIPS : %lu.%02lu\n",
cpunum, c->vendor, family, c->model, c->revision, c->archrev,
features, c->ppn, c->number,
c->proc_freq / 1000000, c->proc_freq % 1000000,
c->itc_freq / 1000000, c->itc_freq % 1000000,
lpj*HZ/500000, (lpj*HZ/5000) % 100);
#ifdef CONFIG_SMP
seq_printf(m, "siblings : %u\n", c->num_log);
if (c->threads_per_core > 1 || c->cores_per_socket > 1)
seq_printf(m,
"physical id: %u\n"
"core id : %u\n"
"thread id : %u\n",
c->socket_id, c->core_id, c->thread_id);
#endif
seq_printf(m,"\n");
return 0;
}
......@@ -533,6 +590,14 @@ identify_cpu (struct cpuinfo_ia64 *c)
memcpy(c->vendor, cpuid.field.vendor, 16);
#ifdef CONFIG_SMP
c->cpu = smp_processor_id();
/* below default values will be overwritten by identify_siblings()
* for Multi-Threading/Multi-Core capable cpu's
*/
c->threads_per_core = c->cores_per_socket = c->num_log = 1;
c->socket_id = -1;
identify_siblings(c);
#endif
c->ppn = cpuid.field.ppn;
c->number = cpuid.field.number;
......
arch/ia64/kernel/smpboot.c
浏览文件 @ fc67b16e
/*
* SMP boot-related support
*
* Copyright (C) 1998-2003 Hewlett-Packard Co
* Copyright (C) 1998-2003, 2005 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 2001, 2004-2005 Intel Corp
* Rohit Seth <rohit.seth@intel.com>
* Suresh Siddha <suresh.b.siddha@intel.com>
* Gordon Jin <gordon.jin@intel.com>
* Ashok Raj <ashok.raj@intel.com>
*
* 01/05/16 Rohit Seth <rohit.seth@intel.com> Moved SMP booting functions from smp.c to here.
* 01/04/27 David Mosberger <davidm@hpl.hp.com> Added ITC synching code.
......@@ -10,6 +15,11 @@
* smp_boot_cpus()/smp_commence() is replaced by
* smp_prepare_cpus()/__cpu_up()/smp_cpus_done().
* 04/06/21 Ashok Raj <ashok.raj@intel.com> Added CPU Hotplug Support
* 04/12/26 Jin Gordon <gordon.jin@intel.com>
* 04/12/26 Rohit Seth <rohit.seth@intel.com>
* Add multi-threading and multi-core detection
* 05/01/30 Suresh Siddha <suresh.b.siddha@intel.com>
* Setup cpu_sibling_map and cpu_core_map
*/
#include <linux/config.h>
......@@ -122,6 +132,11 @@ EXPORT_SYMBOL(cpu_online_map);
cpumask_t cpu_possible_map;
EXPORT_SYMBOL(cpu_possible_map);
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
int smp_num_siblings = 1;
int smp_num_cpucores = 1;
/* which logical CPU number maps to which CPU (physical APIC ID) */
volatile int ia64_cpu_to_sapicid[NR_CPUS];
EXPORT_SYMBOL(ia64_cpu_to_sapicid);
......@@ -156,7 +171,8 @@ sync_master (void *arg)
local_irq_save(flags);
{
for (i = 0; i < NUM_ROUNDS*NUM_ITERS; ++i) {
while (!go[MASTER]);
while (!go[MASTER])
cpu_relax();
go[MASTER] = 0;
go[SLAVE] = ia64_get_itc();
}
......@@ -179,7 +195,8 @@ get_delta (long *rt, long *master)
for (i = 0; i < NUM_ITERS; ++i) {
t0 = ia64_get_itc();
go[MASTER] = 1;
while (!(tm = go[SLAVE]));
while (!(tm = go[SLAVE]))
cpu_relax();
go[SLAVE] = 0;
t1 = ia64_get_itc();
......@@ -258,7 +275,8 @@ ia64_sync_itc (unsigned int master)
return;
}
while (go[MASTER]); /* wait for master to be ready */
while (go[MASTER])
cpu_relax(); /* wait for master to be ready */
spin_lock_irqsave(&itc_sync_lock, flags);
{
......@@ -595,7 +613,68 @@ void __devinit smp_prepare_boot_cpu(void)
cpu_set(smp_processor_id(), cpu_callin_map);
}
/*
* mt_info[] is a temporary store for all info returned by
* PAL_LOGICAL_TO_PHYSICAL, to be copied into cpuinfo_ia64 when the
* specific cpu comes.
*/
static struct {
__u32 socket_id;
__u16 core_id;
__u16 thread_id;
__u16 proc_fixed_addr;
__u8 valid;
}mt_info[NR_CPUS] __devinit;
#ifdef CONFIG_HOTPLUG_CPU
static inline void
remove_from_mtinfo(int cpu)
{
int i;
for_each_cpu(i)
if (mt_info[i].valid && mt_info[i].socket_id ==
cpu_data(cpu)->socket_id)
mt_info[i].valid = 0;
}
static inline void
clear_cpu_sibling_map(int cpu)
{
int i;
for_each_cpu_mask(i, cpu_sibling_map[cpu])
cpu_clear(cpu, cpu_sibling_map[i]);
for_each_cpu_mask(i, cpu_core_map[cpu])
cpu_clear(cpu, cpu_core_map[i]);
cpu_sibling_map[cpu] = cpu_core_map[cpu] = CPU_MASK_NONE;
}
static void
remove_siblinginfo(int cpu)
{
int last = 0;
if (cpu_data(cpu)->threads_per_core == 1 &&
cpu_data(cpu)->cores_per_socket == 1) {
cpu_clear(cpu, cpu_core_map[cpu]);
cpu_clear(cpu, cpu_sibling_map[cpu]);
return;
}
last = (cpus_weight(cpu_core_map[cpu]) == 1 ? 1 : 0);
/* remove it from all sibling map's */
clear_cpu_sibling_map(cpu);
/* if this cpu is the last in the core group, remove all its info
* from mt_info structure
*/
if (last)
remove_from_mtinfo(cpu);
}
extern void fixup_irqs(void);
/* must be called with cpucontrol mutex held */
int __cpu_disable(void)
......@@ -608,6 +687,7 @@ int __cpu_disable(void)
if (cpu == 0)
return -EBUSY;
remove_siblinginfo(cpu);
fixup_irqs();
local_flush_tlb_all();
cpu_clear(cpu, cpu_callin_map);
......@@ -660,6 +740,23 @@ smp_cpus_done (unsigned int dummy)
(int)num_online_cpus(), bogosum/(500000/HZ), (bogosum/(5000/HZ))%100);
}
static inline void __devinit
set_cpu_sibling_map(int cpu)
{
int i;
for_each_online_cpu(i) {
if ((cpu_data(cpu)->socket_id == cpu_data(i)->socket_id)) {
cpu_set(i, cpu_core_map[cpu]);
cpu_set(cpu, cpu_core_map[i]);
if (cpu_data(cpu)->core_id == cpu_data(i)->core_id) {
cpu_set(i, cpu_sibling_map[cpu]);
cpu_set(cpu, cpu_sibling_map[i]);
}
}
}
}
int __devinit
__cpu_up (unsigned int cpu)
{
......@@ -682,6 +779,15 @@ __cpu_up (unsigned int cpu)
if (ret < 0)
return ret;
if (cpu_data(cpu)->threads_per_core == 1 &&
cpu_data(cpu)->cores_per_socket == 1) {
cpu_set(cpu, cpu_sibling_map[cpu]);
cpu_set(cpu, cpu_core_map[cpu]);
return 0;
}
set_cpu_sibling_map(cpu);
return 0;
}
......@@ -709,3 +815,106 @@ init_smp_config(void)
ia64_sal_strerror(sal_ret));
}
static inline int __devinit
check_for_mtinfo_index(void)
{
int i;
for_each_cpu(i)
if (!mt_info[i].valid)
return i;
return -1;
}
/*
* Search the mt_info to find out if this socket's cid/tid information is
* cached or not. If the socket exists, fill in the core_id and thread_id
* in cpuinfo
*/
static int __devinit
check_for_new_socket(__u16 logical_address, struct cpuinfo_ia64 *c)
{
int i;
__u32 sid = c->socket_id;
for_each_cpu(i) {
if (mt_info[i].valid && mt_info[i].proc_fixed_addr == logical_address
&& mt_info[i].socket_id == sid) {
c->core_id = mt_info[i].core_id;
c->thread_id = mt_info[i].thread_id;
return 1; /* not a new socket */
}
}
return 0;
}
/*
* identify_siblings(cpu) gets called from identify_cpu. This populates the
* information related to logical execution units in per_cpu_data structure.
*/
void __devinit
identify_siblings(struct cpuinfo_ia64 *c)
{
s64 status;
u16 pltid;
u64 proc_fixed_addr;
int count, i;
pal_logical_to_physical_t info;
if (smp_num_cpucores == 1 && smp_num_siblings == 1)
return;
if ((status = ia64_pal_logical_to_phys(0, &info)) != PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n",
status);
return;
}
if ((status = ia64_sal_physical_id_info(&pltid)) != PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_sal_pltid failed with %ld\n", status);
return;
}
if ((status = ia64_pal_fixed_addr(&proc_fixed_addr)) != PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_pal_fixed_addr failed with %ld\n", status);
return;
}
c->socket_id = (pltid << 8) | info.overview_ppid;
c->cores_per_socket = info.overview_cpp;
c->threads_per_core = info.overview_tpc;
count = c->num_log = info.overview_num_log;
/* If the thread and core id information is already cached, then
* we will simply update cpu_info and return. Otherwise, we will
* do the PAL calls and cache core and thread id's of all the siblings.
*/
if (check_for_new_socket(proc_fixed_addr, c))
return;
for (i = 0; i < count; i++) {
int index;
if (i && (status = ia64_pal_logical_to_phys(i, &info))
!= PAL_STATUS_SUCCESS) {
printk(KERN_ERR "ia64_pal_logical_to_phys failed"
" with %ld\n", status);
return;
}
if (info.log2_la == proc_fixed_addr) {
c->core_id = info.log1_cid;
c->thread_id = info.log1_tid;
}
index = check_for_mtinfo_index();
/* We will not do the mt_info caching optimization in this case.
*/
if (index < 0)
continue;
mt_info[index].valid = 1;
mt_info[index].socket_id = c->socket_id;
mt_info[index].core_id = info.log1_cid;
mt_info[index].thread_id = info.log1_tid;
mt_info[index].proc_fixed_addr = info.log2_la;
}
}
arch/ia64/kernel/unwind.c
浏览文件 @ fc67b16e
......@@ -1943,23 +1943,30 @@ EXPORT_SYMBOL(unw_unwind);
int
unw_unwind_to_user (struct unw_frame_info *info)
{
unsigned long ip, sp;
unsigned long ip, sp, pr = 0;
while (unw_unwind(info) >= 0) {
if (unw_get_rp(info, &ip) < 0) {
unw_get_ip(info, &ip);
UNW_DPRINT(0, "unwind.%s: failed to read return pointer (ip=0x%lx)\n",
__FUNCTION__, ip);
return -1;
}
unw_get_sp(info, &sp);
if (sp >= (unsigned long)info->task + IA64_STK_OFFSET)
if ((long)((unsigned long)info->task + IA64_STK_OFFSET - sp)
< IA64_PT_REGS_SIZE) {
UNW_DPRINT(0, "unwind.%s: ran off the top of the kernel stack\n",
__FUNCTION__);
break;
if (ip < FIXADDR_USER_END)
}
if (unw_is_intr_frame(info) &&
(pr & (1UL << PRED_USER_STACK)))
return 0;
if (unw_get_pr (info, &pr) < 0) {
unw_get_rp(info, &ip);
UNW_DPRINT(0, "unwind.%s: failed to read "
"predicate register (ip=0x%lx)\n",
__FUNCTION__, ip);
return -1;
}
}
unw_get_ip(info, &ip);
UNW_DPRINT(0, "unwind.%s: failed to unwind to user-level (ip=0x%lx)\n", __FUNCTION__, ip);
UNW_DPRINT(0, "unwind.%s: failed to unwind to user-level (ip=0x%lx)\n",
__FUNCTION__, ip);
return -1;
}
EXPORT_SYMBOL(unw_unwind_to_user);
......
arch/ia64/lib/memcpy_mck.S
浏览文件 @ fc67b16e
......@@ -300,7 +300,7 @@ EK(.ex_handler, (p[D]) st8 [dst1] = t15, 4*8)
add src_pre_mem=0,src0 // prefetch src pointer
add dst_pre_mem=0,dst0 // prefetch dest pointer
and src0=-8,src0 // 1st src pointer
(p7) mov ar.lc = r21
(p7) mov ar.lc = cnt
(p8) mov ar.lc = r0
;;
TEXT_ALIGN(32)
......
arch/ia64/mm/contig.c
浏览文件 @ fc67b16e
......@@ -61,7 +61,8 @@ show_mem (void)
printk("%d reserved pages\n", reserved);
printk("%d pages shared\n", shared);
printk("%d pages swap cached\n", cached);
printk("%ld pages in page table cache\n", pgtable_cache_size);
printk("%ld pages in page table cache\n",
pgtable_quicklist_total_size());
}
/* physical address where the bootmem map is located */
......
arch/ia64/mm/discontig.c
浏览文件 @ fc67b16e
......@@ -582,7 +582,8 @@ void show_mem(void)
printk("%d reserved pages\n", total_reserved);
printk("%d pages shared\n", total_shared);
printk("%d pages swap cached\n", total_cached);
printk("Total of %ld pages in page table cache\n", pgtable_cache_size);
printk("Total of %ld pages in page table cache\n",
pgtable_quicklist_total_size());
printk("%d free buffer pages\n", nr_free_buffer_pages());
}
......
arch/ia64/mm/fault.c
浏览文件 @ fc67b16e
......@@ -209,10 +209,13 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
}
no_context:
if (isr & IA64_ISR_SP) {
if ((isr & IA64_ISR_SP)
|| ((isr & IA64_ISR_NA) && (isr & IA64_ISR_CODE_MASK) == IA64_ISR_CODE_LFETCH))
{
/*
* This fault was due to a speculative load set the "ed" bit in the psr to
* ensure forward progress (target register will get a NaT).
* This fault was due to a speculative load or lfetch.fault, set the "ed"
* bit in the psr to ensure forward progress. (Target register will get a
* NaT for ld.s, lfetch will be canceled.)
*/
ia64_psr(regs)->ed = 1;
return;
......
arch/ia64/mm/init.c
浏览文件 @ fc67b16e
......@@ -39,6 +39,9 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
DEFINE_PER_CPU(unsigned long *, __pgtable_quicklist);
DEFINE_PER_CPU(long, __pgtable_quicklist_size);
extern void ia64_tlb_init (void);
unsigned long MAX_DMA_ADDRESS = PAGE_OFFSET + 0x100000000UL;
......@@ -50,27 +53,53 @@ struct page *vmem_map;
EXPORT_SYMBOL(vmem_map);
#endif
static int pgt_cache_water[2] = { 25, 50 };
struct page *zero_page_memmap_ptr; /* map entry for zero page */
struct page *zero_page_memmap_ptr; /* map entry for zero page */
EXPORT_SYMBOL(zero_page_memmap_ptr);
#define MIN_PGT_PAGES 25UL
#define MAX_PGT_FREES_PER_PASS 16L
#define PGT_FRACTION_OF_NODE_MEM 16
static inline long
max_pgt_pages(void)
{
u64 node_free_pages, max_pgt_pages;
#ifndef CONFIG_NUMA
node_free_pages = nr_free_pages();
#else
node_free_pages = nr_free_pages_pgdat(NODE_DATA(numa_node_id()));
#endif
max_pgt_pages = node_free_pages / PGT_FRACTION_OF_NODE_MEM;
max_pgt_pages = max(max_pgt_pages, MIN_PGT_PAGES);
return max_pgt_pages;
}
static inline long
min_pages_to_free(void)
{
long pages_to_free;
pages_to_free = pgtable_quicklist_size - max_pgt_pages();
pages_to_free = min(pages_to_free, MAX_PGT_FREES_PER_PASS);
return pages_to_free;
}
void
check_pgt_cache (void)
check_pgt_cache(void)
{
int low, high;
long pages_to_free;
low = pgt_cache_water[0];
high = pgt_cache_water[1];
if (unlikely(pgtable_quicklist_size <= MIN_PGT_PAGES))
return;
preempt_disable();
if (pgtable_cache_size > (u64) high) {
do {
if (pgd_quicklist)
free_page((unsigned long)pgd_alloc_one_fast(NULL));
if (pmd_quicklist)
free_page((unsigned long)pmd_alloc_one_fast(NULL, 0));
} while (pgtable_cache_size > (u64) low);
while (unlikely((pages_to_free = min_pages_to_free()) > 0)) {
while (pages_to_free--) {
free_page((unsigned long)pgtable_quicklist_alloc());
}
preempt_enable();
preempt_disable();
}
preempt_enable();
}
......@@ -523,11 +552,14 @@ void
mem_init (void)
{
long reserved_pages, codesize, datasize, initsize;
unsigned long num_pgt_pages;
pg_data_t *pgdat;
int i;
static struct kcore_list kcore_mem, kcore_vmem, kcore_kernel;
BUG_ON(PTRS_PER_PGD * sizeof(pgd_t) != PAGE_SIZE);
BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE);
BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
#ifdef CONFIG_PCI
/*
* This needs to be called _after_ the command line has been parsed but _before_
......@@ -564,18 +596,6 @@ mem_init (void)
num_physpages << (PAGE_SHIFT - 10), codesize >> 10,
reserved_pages << (PAGE_SHIFT - 10), datasize >> 10, initsize >> 10);
/*
* Allow for enough (cached) page table pages so that we can map the entire memory
* at least once. Each task also needs a couple of page tables pages, so add in a
* fudge factor for that (don't use "threads-max" here; that would be wrong!).
* Don't allow the cache to be more than 10% of total memory, though.
*/
# define NUM_TASKS 500 /* typical number of tasks */
num_pgt_pages = nr_free_pages() / PTRS_PER_PGD + NUM_TASKS;
if (num_pgt_pages > nr_free_pages() / 10)
num_pgt_pages = nr_free_pages() / 10;
if (num_pgt_pages > (u64) pgt_cache_water[1])
pgt_cache_water[1] = num_pgt_pages;
/*
* For fsyscall entrpoints with no light-weight handler, use the ordinary
......
arch/ia64/sn/include/pci/pcibr_provider.h
浏览文件 @ fc67b16e
......@@ -123,9 +123,11 @@ pcibr_lock(struct pcibus_info *pcibus_info)
}
#define pcibr_unlock(pcibus_info, flag) spin_unlock_irqrestore(&pcibus_info->pbi_lock, flag)
extern int pcibr_init_provider(void);
extern void *pcibr_bus_fixup(struct pcibus_bussoft *);
extern uint64_t pcibr_dma_map(struct pcidev_info *, unsigned long, size_t, unsigned int);
extern void pcibr_dma_unmap(struct pcidev_info *, dma_addr_t, int);
extern dma_addr_t pcibr_dma_map(struct pci_dev *, unsigned long, size_t);
extern dma_addr_t pcibr_dma_map_consistent(struct pci_dev *, unsigned long, size_t);
extern void pcibr_dma_unmap(struct pci_dev *, dma_addr_t, int);
/*
* prototypes for the bridge asic register access routines in pcibr_reg.c
......
arch/ia64/sn/kernel/Makefile
浏览文件 @ fc67b16e
......@@ -10,3 +10,4 @@
obj-y += setup.o bte.o bte_error.o irq.o mca.o idle.o \
huberror.o io_init.o iomv.o klconflib.o sn2/
obj-$(CONFIG_IA64_GENERIC) += machvec.o
obj-$(CONFIG_SGI_TIOCX) += tiocx.o
arch/ia64/sn/kernel/bte.c
浏览文件 @ fc67b16e
......@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <linux/config.h>
......@@ -170,10 +170,6 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
/* Initialize the notification to a known value. */
*bte->most_rcnt_na = BTE_WORD_BUSY;
/* Set the status reg busy bit and transfer length */
BTE_PRINTKV(("IBLS = 0x%lx\n", IBLS_BUSY | transfer_size));
BTE_LNSTAT_STORE(bte, IBLS_BUSY | transfer_size);
/* Set the source and destination registers */
BTE_PRINTKV(("IBSA = 0x%lx)\n", (TO_PHYS(src))));
BTE_SRC_STORE(bte, TO_PHYS(src));
......@@ -188,7 +184,7 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
/* Initiate the transfer */
BTE_PRINTK(("IBCT = 0x%lx)\n", BTE_VALID_MODE(mode)));
BTE_CTRL_STORE(bte, BTE_VALID_MODE(mode));
BTE_START_TRANSFER(bte, transfer_size, BTE_VALID_MODE(mode));
itc_end = ia64_get_itc() + (40000000 * local_cpu_data->cyc_per_usec);
......@@ -429,10 +425,16 @@ void bte_init_node(nodepda_t * mynodepda, cnodeid_t cnode)
mynodepda->bte_recovery_timer.data = (unsigned long)mynodepda;
for (i = 0; i < BTES_PER_NODE; i++) {
u64 *base_addr;
/* Which link status register should we use? */
unsigned long link_status = (i == 0 ? IIO_IBLS0 : IIO_IBLS1);
mynodepda->bte_if[i].bte_base_addr = (u64 *)
REMOTE_HUB_ADDR(cnodeid_to_nasid(cnode), link_status);
base_addr = (u64 *)
REMOTE_HUB_ADDR(cnodeid_to_nasid(cnode), BTE_BASE_ADDR(i));
mynodepda->bte_if[i].bte_base_addr = base_addr;
mynodepda->bte_if[i].bte_source_addr = BTE_SOURCE_ADDR(base_addr);
mynodepda->bte_if[i].bte_destination_addr = BTE_DEST_ADDR(base_addr);
mynodepda->bte_if[i].bte_control_addr = BTE_CTRL_ADDR(base_addr);
mynodepda->bte_if[i].bte_notify_addr = BTE_NOTIF_ADDR(base_addr);
/*
* Initialize the notification and spinlock
......
arch/ia64/sn/kernel/bte_error.c
浏览文件 @ fc67b16e
......@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <linux/types.h>
......@@ -33,48 +33,28 @@ void bte_error_handler(unsigned long);
* Wait until all BTE related CRBs are completed
* and then reset the interfaces.
*/
void bte_error_handler(unsigned long _nodepda)
void shub1_bte_error_handler(unsigned long _nodepda)
{
struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
nasid_t nasid;
int i;
int valid_crbs;
unsigned long irq_flags;
volatile u64 *notify;
bte_result_t bh_error;
ii_imem_u_t imem; /* II IMEM Register */
ii_icrb0_d_u_t icrbd; /* II CRB Register D */
ii_ibcr_u_t ibcr;
ii_icmr_u_t icmr;
ii_ieclr_u_t ieclr;
BTE_PRINTK(("bte_error_handler(%p) - %d\n", err_nodepda,
BTE_PRINTK(("shub1_bte_error_handler(%p) - %d\n", err_nodepda,
smp_processor_id()));
spin_lock_irqsave(recovery_lock, irq_flags);
if ((err_nodepda->bte_if[0].bh_error == BTE_SUCCESS) &&
(err_nodepda->bte_if[1].bh_error == BTE_SUCCESS)) {
BTE_PRINTK(("eh:%p:%d Nothing to do.\n", err_nodepda,
smp_processor_id()));
spin_unlock_irqrestore(recovery_lock, irq_flags);
return;
}
/*
* Lock all interfaces on this node to prevent new transfers
* from being queued.
*/
for (i = 0; i < BTES_PER_NODE; i++) {
if (err_nodepda->bte_if[i].cleanup_active) {
continue;
}
spin_lock(&err_nodepda->bte_if[i].spinlock);
BTE_PRINTK(("eh:%p:%d locked %d\n", err_nodepda,
smp_processor_id(), i));
err_nodepda->bte_if[i].cleanup_active = 1;
}
/* Determine information about our hub */
nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode);
......@@ -101,7 +81,6 @@ void bte_error_handler(unsigned long _nodepda)
mod_timer(recovery_timer, HZ * 5);
BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda,
smp_processor_id()));
spin_unlock_irqrestore(recovery_lock, irq_flags);
return;
}
if (icmr.ii_icmr_fld_s.i_crb_vld != 0) {
......@@ -120,8 +99,6 @@ void bte_error_handler(unsigned long _nodepda)
BTE_PRINTK(("eh:%p:%d Valid %d, Giving up\n",
err_nodepda, smp_processor_id(),
i));
spin_unlock_irqrestore(recovery_lock,
irq_flags);
return;
}
}
......@@ -146,6 +123,51 @@ void bte_error_handler(unsigned long _nodepda)
ibcr.ii_ibcr_fld_s.i_soft_reset = 1;
REMOTE_HUB_S(nasid, IIO_IBCR, ibcr.ii_ibcr_regval);
del_timer(recovery_timer);
}
/*
* Wait until all BTE related CRBs are completed
* and then reset the interfaces.
*/
void bte_error_handler(unsigned long _nodepda)
{
struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
int i;
nasid_t nasid;
unsigned long irq_flags;
volatile u64 *notify;
bte_result_t bh_error;
BTE_PRINTK(("bte_error_handler(%p) - %d\n", err_nodepda,
smp_processor_id()));
spin_lock_irqsave(recovery_lock, irq_flags);
/*
* Lock all interfaces on this node to prevent new transfers
* from being queued.
*/
for (i = 0; i < BTES_PER_NODE; i++) {
if (err_nodepda->bte_if[i].cleanup_active) {
continue;
}
spin_lock(&err_nodepda->bte_if[i].spinlock);
BTE_PRINTK(("eh:%p:%d locked %d\n", err_nodepda,
smp_processor_id(), i));
err_nodepda->bte_if[i].cleanup_active = 1;
}
if (is_shub1()) {
shub1_bte_error_handler(_nodepda);
} else {
nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode);
if (ia64_sn_bte_recovery(nasid))
panic("bte_error_handler(): Fatal BTE Error");
}
for (i = 0; i < BTES_PER_NODE; i++) {
bh_error = err_nodepda->bte_if[i].bh_error;
if (bh_error != BTE_SUCCESS) {
......@@ -165,8 +187,6 @@ void bte_error_handler(unsigned long _nodepda)
spin_unlock(&err_nodepda->bte_if[i].spinlock);
}
del_timer(recovery_timer);
spin_unlock_irqrestore(recovery_lock, irq_flags);
}
......
arch/ia64/sn/kernel/huberror.c
浏览文件 @ fc67b16e
......@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 - 1997, 2000,2002-2004 Silicon Graphics, Inc. All rights reserved.
* Copyright (C) 1992 - 1997, 2000,2002-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/types.h>
......@@ -38,8 +38,11 @@ static irqreturn_t hub_eint_handler(int irq, void *arg, struct pt_regs *ep)
if ((int)ret_stuff.v0)
panic("hubii_eint_handler(): Fatal TIO Error");
if (!(nasid & 1)) /* Not a TIO, handle CRB errors */
(void)hubiio_crb_error_handler(hubdev_info);
if (is_shub1()) {
if (!(nasid & 1)) /* Not a TIO, handle CRB errors */
(void)hubiio_crb_error_handler(hubdev_info);
} else
bte_error_handler((unsigned long)NODEPDA(nasid_to_cnodeid(nasid)));
return IRQ_HANDLED;
}
......
arch/ia64/sn/kernel/io_init.c
浏览文件 @ fc67b16e
......@@ -11,14 +11,15 @@
#include <asm/sn/types.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/addrs.h>
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/pcibr_provider.h"
#include "xtalk/xwidgetdev.h"
#include <asm/sn/geo.h>
#include "xtalk/hubdev.h"
#include <asm/sn/io.h>
#include <asm/sn/simulator.h>
#include <asm/sn/tioca_provider.h>
char master_baseio_wid;
nasid_t master_nasid = INVALID_NASID; /* Partition Master */
......@@ -34,6 +35,37 @@ struct brick {
int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
/*
* Hooks and struct for unsupported pci providers
*/
static dma_addr_t
sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
{
return 0;
}
static void
sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
{
return;
}
static void *
sn_default_pci_bus_fixup(struct pcibus_bussoft *soft)
{
return NULL;
}
static struct sn_pcibus_provider sn_pci_default_provider = {
.dma_map = sn_default_pci_map,
.dma_map_consistent = sn_default_pci_map,
.dma_unmap = sn_default_pci_unmap,
.bus_fixup = sn_default_pci_bus_fixup,
};
/*
* Retrieve the DMA Flush List given nasid. This list is needed
* to implement the WAR - Flush DMA data on PIO Reads.
......@@ -201,6 +233,7 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
struct sn_irq_info *sn_irq_info;
struct pci_dev *host_pci_dev;
int status = 0;
struct pcibus_bussoft *bs;
dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
if (SN_PCIDEV_INFO(dev) <= 0)
......@@ -241,6 +274,7 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
}
/* set up host bus linkages */
bs = SN_PCIBUS_BUSSOFT(dev->bus);
host_pci_dev =
pci_find_slot(SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32,
SN_PCIDEV_INFO(dev)->
......@@ -248,10 +282,16 @@ static void sn_pci_fixup_slot(struct pci_dev *dev)
SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
SN_PCIDEV_INFO(host_pci_dev);
SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
SN_PCIDEV_INFO(dev)->pdi_pcibus_info = SN_PCIBUS_BUSSOFT(dev->bus);
SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
} else {
SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
}
/* Only set up IRQ stuff if this device has a host bus context */
if (SN_PCIDEV_BUSSOFT(dev) && sn_irq_info->irq_irq) {
if (bs && sn_irq_info->irq_irq) {
SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
sn_irq_fixup(dev, sn_irq_info);
......@@ -271,6 +311,7 @@ static void sn_pci_controller_fixup(int segment, int busnum)
struct pcibus_bussoft *prom_bussoft_ptr;
struct hubdev_info *hubdev_info;
void *provider_soft;
struct sn_pcibus_provider *provider;
status =
sal_get_pcibus_info((u64) segment, (u64) busnum,
......@@ -291,16 +332,22 @@ static void sn_pci_controller_fixup(int segment, int busnum)
/*
* Per-provider fixup. Copies the contents from prom to local
* area and links SN_PCIBUS_BUSSOFT().
*
* Note: Provider is responsible for ensuring that prom_bussoft_ptr
* represents an asic-type that it can handle.
*/
if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB) {
return; /* no further fixup necessary */
if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
return; /* unsupported asic type */
}
provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
if (provider == NULL) {
return; /* no provider registerd for this asic */
}
provider_soft = NULL;
if (provider->bus_fixup) {
provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);
}
provider_soft = pcibr_bus_fixup(prom_bussoft_ptr);
if (provider_soft == NULL) {
return; /* fixup failed or not applicable */
}
......@@ -338,6 +385,17 @@ static int __init sn_pci_init(void)
if (!ia64_platform_is("sn2") || IS_RUNNING_ON_SIMULATOR())
return 0;
/*
* prime sn_pci_provider[]. Individial provider init routines will
* override their respective default entries.
*/
for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
sn_pci_provider[i] = &sn_pci_default_provider;
pcibr_init_provider();
tioca_init_provider();
/*
* This is needed to avoid bounce limit checks in the blk layer
*/
......
arch/ia64/sn/kernel/irq.c
浏览文件 @ fc67b16e
......@@ -13,8 +13,8 @@
#include <asm/sn/addrs.h>
#include <asm/sn/arch.h>
#include "xtalk/xwidgetdev.h"
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/pcibr_provider.h"
#include <asm/sn/shub_mmr.h>
#include <asm/sn/sn_sal.h>
......@@ -82,20 +82,9 @@ static void sn_ack_irq(unsigned int irq)
nasid = get_nasid();
event_occurred =
HUB_L((uint64_t *) GLOBAL_MMR_ADDR(nasid, SH_EVENT_OCCURRED));
if (event_occurred & SH_EVENT_OCCURRED_UART_INT_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_UART_INT_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_IPI_INT_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_IPI_INT_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_II_INT0_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_II_INT0_SHFT);
}
if (event_occurred & SH_EVENT_OCCURRED_II_INT1_MASK) {
mask |= (1 << SH_EVENT_OCCURRED_II_INT1_SHFT);
}
mask = event_occurred & SH_ALL_INT_MASK;
HUB_S((uint64_t *) GLOBAL_MMR_ADDR(nasid, SH_EVENT_OCCURRED_ALIAS),
mask);
mask);
__set_bit(irq, (volatile void *)pda->sn_in_service_ivecs);
move_irq(irq);
......
arch/ia64/sn/kernel/setup.c
浏览文件 @ fc67b16e
......@@ -29,6 +29,7 @@
#include <linux/sched.h>
#include <linux/root_dev.h>
#include <linux/nodemask.h>
#include <linux/pm.h>
#include <asm/io.h>
#include <asm/sal.h>
......@@ -353,6 +354,14 @@ void __init sn_setup(char **cmdline_p)
screen_info = sn_screen_info;
sn_timer_init();
/*
* set pm_power_off to a SAL call to allow
* sn machines to power off. The SAL call can be replaced
* by an ACPI interface call when ACPI is fully implemented
* for sn.
*/
pm_power_off = ia64_sn_power_down;
}
/**
......
arch/ia64/sn/kernel/sn2/sn_hwperf.c
浏览文件 @ fc67b16e
......@@ -28,6 +28,7 @@
#include <linux/vmalloc.h>
#include <linux/seq_file.h>
#include <linux/miscdevice.h>
#include <linux/utsname.h>
#include <linux/cpumask.h>
#include <linux/smp_lock.h>
#include <linux/nodemask.h>
......@@ -43,6 +44,7 @@
#include <asm/sn/module.h>
#include <asm/sn/geo.h>
#include <asm/sn/sn2/sn_hwperf.h>
#include <asm/sn/addrs.h>
static void *sn_hwperf_salheap = NULL;
static int sn_hwperf_obj_cnt = 0;
......@@ -81,26 +83,45 @@ static int sn_hwperf_enum_objects(int *nobj, struct sn_hwperf_object_info **ret)
return e;
}
static int sn_hwperf_location_to_bpos(char *location,
int *rack, int *bay, int *slot, int *slab)
{
char type;
/* first scan for an old style geoid string */
if (sscanf(location, "%03d%c%02d#%d",
rack, &type, bay, slab) == 4)
*slot = 0;
else /* scan for a new bladed geoid string */
if (sscanf(location, "%03d%c%02d^%02d#%d",
rack, &type, bay, slot, slab) != 5)
return -1;
/* success */
return 0;
}
static int sn_hwperf_geoid_to_cnode(char *location)
{
int cnode;
geoid_t geoid;
moduleid_t module_id;
char type;
int rack, slot, slab;
int this_rack, this_slot, this_slab;
int rack, bay, slot, slab;
int this_rack, this_bay, this_slot, this_slab;
if (sscanf(location, "%03d%c%02d#%d", &rack, &type, &slot, &slab) != 4)
if (sn_hwperf_location_to_bpos(location, &rack, &bay, &slot, &slab))
return -1;
for (cnode = 0; cnode < numionodes; cnode++) {
geoid = cnodeid_get_geoid(cnode);
module_id = geo_module(geoid);
this_rack = MODULE_GET_RACK(module_id);
this_slot = MODULE_GET_BPOS(module_id);
this_bay = MODULE_GET_BPOS(module_id);
this_slot = geo_slot(geoid);
this_slab = geo_slab(geoid);
if (rack == this_rack && slot == this_slot && slab == this_slab)
if (rack == this_rack && bay == this_bay &&
slot == this_slot && slab == this_slab) {
break;
}
}
return cnode < numionodes ? cnode : -1;
......@@ -153,11 +174,36 @@ static const char *sn_hwperf_get_slabname(struct sn_hwperf_object_info *obj,
return slabname;
}
static void print_pci_topology(struct seq_file *s,
struct sn_hwperf_object_info *obj, int *ordinal,
u64 rack, u64 bay, u64 slot, u64 slab)
{
char *p1;
char *p2;
char *pg;
if (!(pg = (char *)get_zeroed_page(GFP_KERNEL)))
return; /* ignore */
if (ia64_sn_ioif_get_pci_topology(rack, bay, slot, slab,
__pa(pg), PAGE_SIZE) == SN_HWPERF_OP_OK) {
for (p1=pg; *p1 && p1 < pg + PAGE_SIZE;) {
if (!(p2 = strchr(p1, '\n')))
break;
*p2 = '\0';
seq_printf(s, "pcibus %d %s-%s\n",
*ordinal, obj->location, p1);
(*ordinal)++;
p1 = p2 + 1;
}
}
free_page((unsigned long)pg);
}
static int sn_topology_show(struct seq_file *s, void *d)
{
int sz;
int pt;
int e;
int e = 0;
int i;
int j;
const char *slabname;
......@@ -169,11 +215,44 @@ static int sn_topology_show(struct seq_file *s, void *d)
struct sn_hwperf_object_info *p;
struct sn_hwperf_object_info *obj = d; /* this object */
struct sn_hwperf_object_info *objs = s->private; /* all objects */
int rack, bay, slot, slab;
u8 shubtype;
u8 system_size;
u8 sharing_size;
u8 partid;
u8 coher;
u8 nasid_shift;
u8 region_size;
u16 nasid_mask;
int nasid_msb;
int pci_bus_ordinal = 0;
if (obj == objs) {
seq_printf(s, "# sn_topology version 1\n");
seq_printf(s, "# sn_topology version 2\n");
seq_printf(s, "# objtype ordinal location partition"
" [attribute value [, ...]]\n");
if (ia64_sn_get_sn_info(0,
&shubtype, &nasid_mask, &nasid_shift, &system_size,
&sharing_size, &partid, &coher, &region_size))
BUG();
for (nasid_msb=63; nasid_msb > 0; nasid_msb--) {
if (((u64)nasid_mask << nasid_shift) & (1ULL << nasid_msb))
break;
}
seq_printf(s, "partition %u %s local "
"shubtype %s, "
"nasid_mask 0x%016lx, "
"nasid_bits %d:%d, "
"system_size %d, "
"sharing_size %d, "
"coherency_domain %d, "
"region_size %d\n",
partid, system_utsname.nodename,
shubtype ? "shub2" : "shub1",
(u64)nasid_mask << nasid_shift, nasid_msb, nasid_shift,
system_size, sharing_size, coher, region_size);
}
if (SN_HWPERF_FOREIGN(obj)) {
......@@ -181,7 +260,7 @@ static int sn_topology_show(struct seq_file *s, void *d)
return 0;
}
for (i = 0; obj->name[i]; i++) {
for (i = 0; i < SN_HWPERF_MAXSTRING && obj->name[i]; i++) {
if (obj->name[i] == ' ')
obj->name[i] = '_';
}
......@@ -221,6 +300,17 @@ static int sn_topology_show(struct seq_file *s, void *d)
seq_putc(s, '\n');
}
}
/*
* PCI busses attached to this node, if any
*/
if (sn_hwperf_location_to_bpos(obj->location,
&rack, &bay, &slot, &slab)) {
/* export pci bus info */
print_pci_topology(s, obj, &pci_bus_ordinal,
rack, bay, slot, slab);
}
}
if (obj->ports) {
......@@ -397,6 +487,9 @@ static int sn_hwperf_map_err(int hwperf_err)
break;
case SN_HWPERF_OP_BUSY:
e = -EBUSY;
break;
case SN_HWPERF_OP_RECONFIGURE:
e = -EAGAIN;
break;
......@@ -549,6 +642,7 @@ sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, u64 arg)
r = sn_hwperf_op_cpu(&op_info);
if (r) {
r = sn_hwperf_map_err(r);
a.v0 = v0;
goto error;
}
break;
......
arch/ia64/sn/kernel/tiocx.c 0 → 100644
浏览文件 @ fc67b16e
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/proc_fs.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/addrs.h>
#include <asm/sn/io.h>
#include <asm/sn/types.h>
#include <asm/sn/shubio.h>
#include <asm/sn/tiocx.h>
#include "tio.h"
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
#define CX_DEV_NONE 0
#define DEVICE_NAME "tiocx"
#define WIDGET_ID 0
#define TIOCX_DEBUG 0
#if TIOCX_DEBUG
#define DBG(fmt...) printk(KERN_ALERT fmt)
#else
#define DBG(fmt...)
#endif
struct device_attribute dev_attr_cxdev_control;
/**
* tiocx_match - Try to match driver id list with device.
* @dev: device pointer
* @drv: driver pointer
*
* Returns 1 if match, 0 otherwise.
*/
static int tiocx_match(struct device *dev, struct device_driver *drv)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
struct cx_drv *cx_drv = to_cx_driver(drv);
const struct cx_device_id *ids = cx_drv->id_table;
if (!ids)
return 0;
while (ids->part_num) {
if (ids->part_num == cx_dev->cx_id.part_num)
return 1;
ids++;
}
return 0;
}
static int tiocx_hotplug(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
return -ENODEV;
}
static void tiocx_bus_release(struct device *dev)
{
kfree(to_cx_dev(dev));
}
struct bus_type tiocx_bus_type = {
.name = "tiocx",
.match = tiocx_match,
.hotplug = tiocx_hotplug,
};
/**
* cx_device_match - Find cx_device in the id table.
* @ids: id table from driver
* @cx_device: part/mfg id for the device
*
*/
static const struct cx_device_id *cx_device_match(const struct cx_device_id
*ids,
struct cx_dev *cx_device)
{
/*
* NOTES: We may want to check for CX_ANY_ID too.
* Do we want to match against nasid too?
* CX_DEV_NONE == 0, if the driver tries to register for
* part/mfg == 0 we should return no-match (NULL) here.
*/
while (ids->part_num && ids->mfg_num) {
if (ids->part_num == cx_device->cx_id.part_num &&
ids->mfg_num == cx_device->cx_id.mfg_num)
return ids;
ids++;
}
return NULL;
}
/**
* cx_device_probe - Look for matching device.
* Call driver probe routine if found.
* @cx_driver: driver table (cx_drv struct) from driver
* @cx_device: part/mfg id for the device
*/
static int cx_device_probe(struct device *dev)
{
const struct cx_device_id *id;
struct cx_drv *cx_drv = to_cx_driver(dev->driver);
struct cx_dev *cx_dev = to_cx_dev(dev);
int error = 0;
if (!cx_dev->driver && cx_drv->probe) {
id = cx_device_match(cx_drv->id_table, cx_dev);
if (id) {
if ((error = cx_drv->probe(cx_dev, id)) < 0)
return error;
else
cx_dev->driver = cx_drv;
}
}
return error;
}
/**
* cx_driver_remove - Remove driver from device struct.
* @dev: device
*/
static int cx_driver_remove(struct device *dev)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
struct cx_drv *cx_drv = cx_dev->driver;
if (cx_drv->remove)
cx_drv->remove(cx_dev);
cx_dev->driver = NULL;
return 0;
}
/**
* cx_driver_register - Register the driver.
* @cx_driver: driver table (cx_drv struct) from driver
*
* Called from the driver init routine to register a driver.
* The cx_drv struct contains the driver name, a pointer to
* a table of part/mfg numbers and a pointer to the driver's
* probe/attach routine.
*/
int cx_driver_register(struct cx_drv *cx_driver)
{
cx_driver->driver.name = cx_driver->name;
cx_driver->driver.bus = &tiocx_bus_type;
cx_driver->driver.probe = cx_device_probe;
cx_driver->driver.remove = cx_driver_remove;
return driver_register(&cx_driver->driver);
}
/**
* cx_driver_unregister - Unregister the driver.
* @cx_driver: driver table (cx_drv struct) from driver
*/
int cx_driver_unregister(struct cx_drv *cx_driver)
{
driver_unregister(&cx_driver->driver);
return 0;
}
/**
* cx_device_register - Register a device.
* @nasid: device's nasid
* @part_num: device's part number
* @mfg_num: device's manufacturer number
* @hubdev: hub info associated with this device
*
*/
int
cx_device_register(nasid_t nasid, int part_num, int mfg_num,
struct hubdev_info *hubdev)
{
struct cx_dev *cx_dev;
cx_dev = kcalloc(1, sizeof(struct cx_dev), GFP_KERNEL);
DBG("cx_dev= 0x%p\n", cx_dev);
if (cx_dev == NULL)
return -ENOMEM;
cx_dev->cx_id.part_num = part_num;
cx_dev->cx_id.mfg_num = mfg_num;
cx_dev->cx_id.nasid = nasid;
cx_dev->hubdev = hubdev;
cx_dev->dev.parent = NULL;
cx_dev->dev.bus = &tiocx_bus_type;
cx_dev->dev.release = tiocx_bus_release;
snprintf(cx_dev->dev.bus_id, BUS_ID_SIZE, "%d.0x%x",
cx_dev->cx_id.nasid, cx_dev->cx_id.part_num);
device_register(&cx_dev->dev);
get_device(&cx_dev->dev);
device_create_file(&cx_dev->dev, &dev_attr_cxdev_control);
return 0;
}
/**
* cx_device_unregister - Unregister a device.
* @cx_dev: part/mfg id for the device
*/
int cx_device_unregister(struct cx_dev *cx_dev)
{
put_device(&cx_dev->dev);
device_unregister(&cx_dev->dev);
return 0;
}
/**
* cx_device_reload - Reload the device.
* @nasid: device's nasid
* @part_num: device's part number
* @mfg_num: device's manufacturer number
*
* Remove the device associated with 'nasid' from device list and then
* call device-register with the given part/mfg numbers.
*/
static int cx_device_reload(struct cx_dev *cx_dev)
{
device_remove_file(&cx_dev->dev, &dev_attr_cxdev_control);
cx_device_unregister(cx_dev);
return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num,
cx_dev->cx_id.mfg_num, cx_dev->hubdev);
}
static inline uint64_t tiocx_intr_alloc(nasid_t nasid, int widget,
u64 sn_irq_info,
int req_irq, nasid_t req_nasid,
int req_slice)
{
struct ia64_sal_retval rv;
rv.status = 0;
rv.v0 = 0;
ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
SAL_INTR_ALLOC, nasid,
widget, sn_irq_info, req_irq,
req_nasid, req_slice);
return rv.status;
}
static inline void tiocx_intr_free(nasid_t nasid, int widget,
struct sn_irq_info *sn_irq_info)
{
struct ia64_sal_retval rv;
rv.status = 0;
rv.v0 = 0;
ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT,
SAL_INTR_FREE, nasid,
widget, sn_irq_info->irq_irq,
sn_irq_info->irq_cookie, 0, 0);
}
struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq,
nasid_t req_nasid, int slice)
{
struct sn_irq_info *sn_irq_info;
int status;
int sn_irq_size = sizeof(struct sn_irq_info);
if ((nasid & 1) == 0)
return NULL;
sn_irq_info = kmalloc(sn_irq_size, GFP_KERNEL);
if (sn_irq_info == NULL)
return NULL;
memset(sn_irq_info, 0x0, sn_irq_size);
status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq,
req_nasid, slice);
if (status) {
kfree(sn_irq_info);
return NULL;
} else {
return sn_irq_info;
}
}
void tiocx_irq_free(struct sn_irq_info *sn_irq_info)
{
uint64_t bridge = (uint64_t) sn_irq_info->irq_bridge;
nasid_t nasid = NASID_GET(bridge);
int widget;
if (nasid & 1) {
widget = TIO_SWIN_WIDGETNUM(bridge);
tiocx_intr_free(nasid, widget, sn_irq_info);
kfree(sn_irq_info);
}
}
uint64_t
tiocx_dma_addr(uint64_t addr)
{
return PHYS_TO_TIODMA(addr);
}
uint64_t
tiocx_swin_base(int nasid)
{
return TIO_SWIN_BASE(nasid, TIOCX_CORELET);
}
EXPORT_SYMBOL(cx_driver_register);
EXPORT_SYMBOL(cx_driver_unregister);
EXPORT_SYMBOL(cx_device_register);
EXPORT_SYMBOL(cx_device_unregister);
EXPORT_SYMBOL(tiocx_irq_alloc);
EXPORT_SYMBOL(tiocx_irq_free);
EXPORT_SYMBOL(tiocx_bus_type);
EXPORT_SYMBOL(tiocx_dma_addr);
EXPORT_SYMBOL(tiocx_swin_base);
static uint64_t tiocx_get_hubdev_info(u64 handle, u64 address)
{
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
ia64_sal_oemcall_nolock(&ret_stuff,
SN_SAL_IOIF_GET_HUBDEV_INFO,
handle, address, 0, 0, 0, 0, 0);
return ret_stuff.v0;
}
static void tio_conveyor_set(nasid_t nasid, int enable_flag)
{
uint64_t ice_frz;
uint64_t disable_cb = (1ull << 61);
if (!(nasid & 1))
return;
ice_frz = REMOTE_HUB_L(nasid, TIO_ICE_FRZ_CFG);
if (enable_flag) {
if (!(ice_frz & disable_cb)) /* already enabled */
return;
ice_frz &= ~disable_cb;
} else {
if (ice_frz & disable_cb) /* already disabled */
return;
ice_frz |= disable_cb;
}
DBG(KERN_ALERT "TIO_ICE_FRZ_CFG= 0x%lx\n", ice_frz);
REMOTE_HUB_S(nasid, TIO_ICE_FRZ_CFG, ice_frz);
}
#define tio_conveyor_enable(nasid) tio_conveyor_set(nasid, 1)
#define tio_conveyor_disable(nasid) tio_conveyor_set(nasid, 0)
static void tio_corelet_reset(nasid_t nasid, int corelet)
{
if (!(nasid & 1))
return;
REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 1 << corelet);
udelay(2000);
REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 0);
udelay(2000);
}
static int fpga_attached(nasid_t nasid)
{
uint64_t cx_credits;
cx_credits = REMOTE_HUB_L(nasid, TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3);
cx_credits &= TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK;
DBG("cx_credits= 0x%lx\n", cx_credits);
return (cx_credits == 0xf) ? 1 : 0;
}
static int tiocx_reload(struct cx_dev *cx_dev)
{
int part_num = CX_DEV_NONE;
int mfg_num = CX_DEV_NONE;
nasid_t nasid = cx_dev->cx_id.nasid;
if (fpga_attached(nasid)) {
uint64_t cx_id;
cx_id =
*(volatile int32_t *)(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
WIDGET_ID);
part_num = XWIDGET_PART_NUM(cx_id);
mfg_num = XWIDGET_MFG_NUM(cx_id);
DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
/* just ignore it if it's a CE */
if (part_num == TIO_CE_ASIC_PARTNUM)
return 0;
}
cx_dev->cx_id.part_num = part_num;
cx_dev->cx_id.mfg_num = mfg_num;
/*
* Delete old device and register the new one. It's ok if
* part_num/mfg_num == CX_DEV_NONE. We want to register
* devices in the table even if a bitstream isn't loaded.
* That allows use to see that a bitstream isn't loaded via
* TIOCX_IOCTL_DEV_LIST.
*/
return cx_device_reload(cx_dev);
}
static ssize_t show_cxdev_control(struct device *dev, char *buf)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
return sprintf(buf, "0x%x 0x%x 0x%x\n",
cx_dev->cx_id.nasid,
cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num);
}
static ssize_t store_cxdev_control(struct device *dev, const char *buf,
size_t count)
{
int n;
struct cx_dev *cx_dev = to_cx_dev(dev);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (count <= 0)
return 0;
n = simple_strtoul(buf, NULL, 0);
switch (n) {
case 1:
tiocx_reload(cx_dev);
break;
case 3:
tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET);
break;
default:
break;
}
return count;
}
DEVICE_ATTR(cxdev_control, 0644, show_cxdev_control, store_cxdev_control);
static int __init tiocx_init(void)
{
cnodeid_t cnodeid;
int found_tiocx_device = 0;
bus_register(&tiocx_bus_type);
for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {
nasid_t nasid;
if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
break; /* No more nasids .. bail out of loop */
if (nasid & 0x1) { /* TIO's are always odd */
struct hubdev_info *hubdev;
uint64_t status;
struct xwidget_info *widgetp;
DBG("Found TIO at nasid 0x%x\n", nasid);
hubdev =
(struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo);
status =
tiocx_get_hubdev_info(nasid,
(uint64_t) __pa(hubdev));
if (status)
continue;
widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET];
/* The CE hangs off of the CX port but is not an FPGA */
if (widgetp->xwi_hwid.part_num == TIO_CE_ASIC_PARTNUM)
continue;
tio_corelet_reset(nasid, TIOCX_CORELET);
tio_conveyor_enable(nasid);
if (cx_device_register
(nasid, widgetp->xwi_hwid.part_num,
widgetp->xwi_hwid.mfg_num, hubdev) < 0)
return -ENXIO;
else
found_tiocx_device++;
}
}
/* It's ok if we find zero devices. */
DBG("found_tiocx_device= %d\n", found_tiocx_device);
return 0;
}
static void __exit tiocx_exit(void)
{
struct device *dev;
struct device *tdev;
DBG("tiocx_exit\n");
/*
* Unregister devices.
*/
list_for_each_entry_safe(dev, tdev, &tiocx_bus_type.devices.list,
bus_list) {
if (dev) {
struct cx_dev *cx_dev = to_cx_dev(dev);
device_remove_file(dev, &dev_attr_cxdev_control);
cx_device_unregister(cx_dev);
}
}
bus_unregister(&tiocx_bus_type);
}
module_init(tiocx_init);
module_exit(tiocx_exit);
/************************************************************************
* Module licensing and description
************************************************************************/
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
MODULE_DESCRIPTION("TIOCX module");
MODULE_SUPPORTED_DEVICE(DEVICE_NAME);
arch/ia64/sn/pci/Makefile
浏览文件 @ fc67b16e
......@@ -7,4 +7,4 @@
#
# Makefile for the sn pci general routines.
obj-y := pci_dma.o pcibr/
obj-y := pci_dma.o tioca_provider.o pcibr/
arch/ia64/sn/pci/pci_dma.c
浏览文件 @ fc67b16e
......@@ -12,9 +12,8 @@
#include <linux/module.h>
#include <asm/dma.h>
#include <asm/sn/sn_sal.h>
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include "pci/pcibr_provider.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#define SG_ENT_VIRT_ADDRESS(sg) (page_address((sg)->page) + (sg)->offset)
#define SG_ENT_PHYS_ADDRESS(SG) virt_to_phys(SG_ENT_VIRT_ADDRESS(SG))
......@@ -79,7 +78,8 @@ void *sn_dma_alloc_coherent(struct device *dev, size_t size,
{
void *cpuaddr;
unsigned long phys_addr;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
......@@ -102,8 +102,7 @@ void *sn_dma_alloc_coherent(struct device *dev, size_t size,
* resources.
*/
*dma_handle = pcibr_dma_map(pcidev_info, phys_addr, size,
SN_PCIDMA_CONSISTENT);
*dma_handle = provider->dma_map_consistent(pdev, phys_addr, size);
if (!*dma_handle) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
free_pages((unsigned long)cpuaddr, get_order(size));
......@@ -127,11 +126,12 @@ EXPORT_SYMBOL(sn_dma_alloc_coherent);
void sn_dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle)
{
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
pcibr_dma_unmap(pcidev_info, dma_handle, 0);
provider->dma_unmap(pdev, dma_handle, 0);
free_pages((unsigned long)cpu_addr, get_order(size));
}
EXPORT_SYMBOL(sn_dma_free_coherent);
......@@ -159,12 +159,13 @@ dma_addr_t sn_dma_map_single(struct device *dev, void *cpu_addr, size_t size,
{
dma_addr_t dma_addr;
unsigned long phys_addr;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
phys_addr = __pa(cpu_addr);
dma_addr = pcibr_dma_map(pcidev_info, phys_addr, size, 0);
dma_addr = provider->dma_map(pdev, phys_addr, size);
if (!dma_addr) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
return 0;
......@@ -187,10 +188,12 @@ EXPORT_SYMBOL(sn_dma_map_single);
void sn_dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
int direction)
{
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
pcibr_dma_unmap(pcidev_info, dma_addr, direction);
provider->dma_unmap(pdev, dma_addr, direction);
}
EXPORT_SYMBOL(sn_dma_unmap_single);
......@@ -207,12 +210,13 @@ void sn_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nhwentries, int direction)
{
int i;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
BUG_ON(dev->bus != &pci_bus_type);
for (i = 0; i < nhwentries; i++, sg++) {
pcibr_dma_unmap(pcidev_info, sg->dma_address, direction);
provider->dma_unmap(pdev, sg->dma_address, direction);
sg->dma_address = (dma_addr_t) NULL;
sg->dma_length = 0;
}
......@@ -233,7 +237,8 @@ int sn_dma_map_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
{
unsigned long phys_addr;
struct scatterlist *saved_sg = sg;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(to_pci_dev(dev));
struct pci_dev *pdev = to_pci_dev(dev);
struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
int i;
BUG_ON(dev->bus != &pci_bus_type);
......@@ -243,8 +248,8 @@ int sn_dma_map_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
*/
for (i = 0; i < nhwentries; i++, sg++) {
phys_addr = SG_ENT_PHYS_ADDRESS(sg);
sg->dma_address = pcibr_dma_map(pcidev_info, phys_addr,
sg->length, 0);
sg->dma_address = provider->dma_map(pdev,
phys_addr, sg->length);
if (!sg->dma_address) {
printk(KERN_ERR "%s: out of ATEs\n", __FUNCTION__);
......
arch/ia64/sn/pci/pcibr/pcibr_ate.c
浏览文件 @ fc67b16e
......@@ -8,8 +8,8 @@
#include <linux/types.h>
#include <asm/sn/sn_sal.h>
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/pcibr_provider.h"
int pcibr_invalidate_ate = 0; /* by default don't invalidate ATE on free */
......
arch/ia64/sn/pci/pcibr/pcibr_dma.c
浏览文件 @ fc67b16e
......@@ -12,8 +12,8 @@
#include <asm/sn/geo.h>
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/tiocp.h"
#include "pci/pic.h"
#include "pci/pcibr_provider.h"
......@@ -40,7 +40,7 @@ extern int sn_ioif_inited;
* we do not have to allocate entries in the PMU.
*/
static uint64_t
static dma_addr_t
pcibr_dmamap_ate32(struct pcidev_info *info,
uint64_t paddr, size_t req_size, uint64_t flags)
{
......@@ -109,7 +109,7 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
return pci_addr;
}
static uint64_t
static dma_addr_t
pcibr_dmatrans_direct64(struct pcidev_info * info, uint64_t paddr,
uint64_t dma_attributes)
{
......@@ -141,7 +141,7 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, uint64_t paddr,
}
static uint64_t
static dma_addr_t
pcibr_dmatrans_direct32(struct pcidev_info * info,
uint64_t paddr, size_t req_size, uint64_t flags)
{
......@@ -180,11 +180,11 @@ pcibr_dmatrans_direct32(struct pcidev_info * info,
* DMA mappings for Direct 64 and 32 do not have any DMA maps.
*/
void
pcibr_dma_unmap(struct pcidev_info *pcidev_info, dma_addr_t dma_handle,
int direction)
pcibr_dma_unmap(struct pci_dev *hwdev, dma_addr_t dma_handle, int direction)
{
struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
pdi_pcibus_info;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
struct pcibus_info *pcibus_info =
(struct pcibus_info *)pcidev_info->pdi_pcibus_info;
if (IS_PCI32_MAPPED(dma_handle)) {
int ate_index;
......@@ -316,64 +316,63 @@ void sn_dma_flush(uint64_t addr)
}
/*
* Wrapper DMA interface. Called from pci_dma.c routines.
* DMA interfaces. Called from pci_dma.c routines.
*/
uint64_t
pcibr_dma_map(struct pcidev_info * pcidev_info, unsigned long phys_addr,
size_t size, unsigned int flags)
dma_addr_t
pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
{
dma_addr_t dma_handle;
struct pci_dev *pcidev = pcidev_info->pdi_linux_pcidev;
if (flags & SN_PCIDMA_CONSISTENT) {
/* sn_pci_alloc_consistent interfaces */
if (pcidev->dev.coherent_dma_mask == ~0UL) {
dma_handle =
pcibr_dmatrans_direct64(pcidev_info, phys_addr,
PCI64_ATTR_BAR);
} else {
dma_handle =
(dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
phys_addr, size,
PCI32_ATE_BAR);
}
} else {
/* map_sg/map_single interfaces */
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
/* SN cannot support DMA addresses smaller than 32 bits. */
if (pcidev->dma_mask < 0x7fffffff) {
return 0;
}
/* SN cannot support DMA addresses smaller than 32 bits. */
if (hwdev->dma_mask < 0x7fffffff) {
return 0;
}
if (pcidev->dma_mask == ~0UL) {
if (hwdev->dma_mask == ~0UL) {
/*
* Handle the most common case: 64 bit cards. This
* call should always succeed.
*/
dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
PCI64_ATTR_PREF);
} else {
/* Handle 32-63 bit cards via direct mapping */
dma_handle = pcibr_dmatrans_direct32(pcidev_info, phys_addr,
size, 0);
if (!dma_handle) {
/*
* Handle the most common case: 64 bit cards. This
* call should always succeed.
* It is a 32 bit card and we cannot do direct mapping,
* so we use an ATE.
*/
dma_handle =
pcibr_dmatrans_direct64(pcidev_info, phys_addr,
PCI64_ATTR_PREF);
} else {
/* Handle 32-63 bit cards via direct mapping */
dma_handle =
pcibr_dmatrans_direct32(pcidev_info, phys_addr,
size, 0);
if (!dma_handle) {
/*
* It is a 32 bit card and we cannot do direct mapping,
* so we use an ATE.
*/
dma_handle =
pcibr_dmamap_ate32(pcidev_info, phys_addr,
size, PCI32_ATE_PREF);
}
dma_handle = pcibr_dmamap_ate32(pcidev_info, phys_addr,
size, PCI32_ATE_PREF);
}
}
return dma_handle;
}
dma_addr_t
pcibr_dma_map_consistent(struct pci_dev * hwdev, unsigned long phys_addr,
size_t size)
{
dma_addr_t dma_handle;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
if (hwdev->dev.coherent_dma_mask == ~0UL) {
dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
PCI64_ATTR_BAR);
} else {
dma_handle = (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
phys_addr, size,
PCI32_ATE_BAR);
}
return dma_handle;
}
EXPORT_SYMBOL(sn_dma_flush);
arch/ia64/sn/pci/pcibr/pcibr_provider.c
浏览文件 @ fc67b16e
......@@ -13,8 +13,8 @@
#include "xtalk/xwidgetdev.h"
#include <asm/sn/geo.h>
#include "xtalk/hubdev.h"
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/pcibr_provider.h"
#include <asm/sn/addrs.h>
......@@ -168,3 +168,23 @@ void pcibr_change_devices_irq(struct sn_irq_info *sn_irq_info)
pcibr_force_interrupt(sn_irq_info);
}
}
/*
* Provider entries for PIC/CP
*/
struct sn_pcibus_provider pcibr_provider = {
.dma_map = pcibr_dma_map,
.dma_map_consistent = pcibr_dma_map_consistent,
.dma_unmap = pcibr_dma_unmap,
.bus_fixup = pcibr_bus_fixup,
};
int
pcibr_init_provider(void)
{
sn_pci_provider[PCIIO_ASIC_TYPE_PIC] = &pcibr_provider;
sn_pci_provider[PCIIO_ASIC_TYPE_TIOCP] = &pcibr_provider;
return 0;
}
arch/ia64/sn/pci/pcibr/pcibr_reg.c
浏览文件 @ fc67b16e
......@@ -8,8 +8,8 @@
#include <linux/types.h>
#include <linux/interrupt.h>
#include "pci/pcibus_provider_defs.h"
#include "pci/pcidev.h"
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include "pci/tiocp.h"
#include "pci/pic.h"
#include "pci/pcibr_provider.h"
......
arch/ia64/sn/pci/tioca_provider.c 0 → 100644
浏览文件 @ fc67b16e
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2003-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/addrs.h>
#include <asm/sn/pcidev.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/tioca_provider.h>
uint32_t tioca_gart_found;
EXPORT_SYMBOL(tioca_gart_found); /* used by agp-sgi */
LIST_HEAD(tioca_list);
EXPORT_SYMBOL(tioca_list); /* used by agp-sgi */
static int tioca_gart_init(struct tioca_kernel *);
/**
* tioca_gart_init - Initialize SGI TIOCA GART
* @tioca_common: ptr to common prom/kernel struct identifying the
*
* If the indicated tioca has devices present, initialize its associated
* GART MMR's and kernel memory.
*/
static int
tioca_gart_init(struct tioca_kernel *tioca_kern)
{
uint64_t ap_reg;
uint64_t offset;
struct page *tmp;
struct tioca_common *tioca_common;
volatile struct tioca *ca_base;
tioca_common = tioca_kern->ca_common;
ca_base = (struct tioca *)tioca_common->ca_common.bs_base;
if (list_empty(tioca_kern->ca_devices))
return 0;
ap_reg = 0;
/*
* Validate aperature size
*/
switch (CA_APERATURE_SIZE >> 20) {
case 4:
ap_reg |= (0x3ff << CA_GART_AP_SIZE_SHFT); /* 4MB */
break;
case 8:
ap_reg |= (0x3fe << CA_GART_AP_SIZE_SHFT); /* 8MB */
break;
case 16:
ap_reg |= (0x3fc << CA_GART_AP_SIZE_SHFT); /* 16MB */
break;
case 32:
ap_reg |= (0x3f8 << CA_GART_AP_SIZE_SHFT); /* 32 MB */
break;
case 64:
ap_reg |= (0x3f0 << CA_GART_AP_SIZE_SHFT); /* 64 MB */
break;
case 128:
ap_reg |= (0x3e0 << CA_GART_AP_SIZE_SHFT); /* 128 MB */
break;
case 256:
ap_reg |= (0x3c0 << CA_GART_AP_SIZE_SHFT); /* 256 MB */
break;
case 512:
ap_reg |= (0x380 << CA_GART_AP_SIZE_SHFT); /* 512 MB */
break;
case 1024:
ap_reg |= (0x300 << CA_GART_AP_SIZE_SHFT); /* 1GB */
break;
case 2048:
ap_reg |= (0x200 << CA_GART_AP_SIZE_SHFT); /* 2GB */
break;
case 4096:
ap_reg |= (0x000 << CA_GART_AP_SIZE_SHFT); /* 4 GB */
break;
default:
printk(KERN_ERR "%s: Invalid CA_APERATURE_SIZE "
"0x%lx\n", __FUNCTION__, (ulong) CA_APERATURE_SIZE);
return -1;
}
/*
* Set up other aperature parameters
*/
if (PAGE_SIZE >= 16384) {
tioca_kern->ca_ap_pagesize = 16384;
ap_reg |= CA_GART_PAGE_SIZE;
} else {
tioca_kern->ca_ap_pagesize = 4096;
}
tioca_kern->ca_ap_size = CA_APERATURE_SIZE;
tioca_kern->ca_ap_bus_base = CA_APERATURE_BASE;
tioca_kern->ca_gart_entries =
tioca_kern->ca_ap_size / tioca_kern->ca_ap_pagesize;
ap_reg |= (CA_GART_AP_ENB_AGP | CA_GART_AP_ENB_PCI);
ap_reg |= tioca_kern->ca_ap_bus_base;
/*
* Allocate and set up the GART
*/
tioca_kern->ca_gart_size = tioca_kern->ca_gart_entries * sizeof(u64);
tmp =
alloc_pages_node(tioca_kern->ca_closest_node,
GFP_KERNEL | __GFP_ZERO,
get_order(tioca_kern->ca_gart_size));
if (!tmp) {
printk(KERN_ERR "%s: Could not allocate "
"%lu bytes (order %d) for GART\n",
__FUNCTION__,
tioca_kern->ca_gart_size,
get_order(tioca_kern->ca_gart_size));
return -ENOMEM;
}
tioca_kern->ca_gart = page_address(tmp);
tioca_kern->ca_gart_coretalk_addr =
PHYS_TO_TIODMA(virt_to_phys(tioca_kern->ca_gart));
/*
* Compute PCI/AGP convenience fields
*/
offset = CA_PCI32_MAPPED_BASE - CA_APERATURE_BASE;
tioca_kern->ca_pciap_base = CA_PCI32_MAPPED_BASE;
tioca_kern->ca_pciap_size = CA_PCI32_MAPPED_SIZE;
tioca_kern->ca_pcigart_start = offset / tioca_kern->ca_ap_pagesize;
tioca_kern->ca_pcigart_base =
tioca_kern->ca_gart_coretalk_addr + offset;
tioca_kern->ca_pcigart =
&tioca_kern->ca_gart[tioca_kern->ca_pcigart_start];
tioca_kern->ca_pcigart_entries =
tioca_kern->ca_pciap_size / tioca_kern->ca_ap_pagesize;
tioca_kern->ca_pcigart_pagemap =
kcalloc(1, tioca_kern->ca_pcigart_entries / 8, GFP_KERNEL);
if (!tioca_kern->ca_pcigart_pagemap) {
free_pages((unsigned long)tioca_kern->ca_gart,
get_order(tioca_kern->ca_gart_size));
return -1;
}
offset = CA_AGP_MAPPED_BASE - CA_APERATURE_BASE;
tioca_kern->ca_gfxap_base = CA_AGP_MAPPED_BASE;
tioca_kern->ca_gfxap_size = CA_AGP_MAPPED_SIZE;
tioca_kern->ca_gfxgart_start = offset / tioca_kern->ca_ap_pagesize;
tioca_kern->ca_gfxgart_base =
tioca_kern->ca_gart_coretalk_addr + offset;
tioca_kern->ca_gfxgart =
&tioca_kern->ca_gart[tioca_kern->ca_gfxgart_start];
tioca_kern->ca_gfxgart_entries =
tioca_kern->ca_gfxap_size / tioca_kern->ca_ap_pagesize;
/*
* various control settings:
* use agp op-combining
* use GET semantics to fetch memory
* participate in coherency domain
* DISABLE GART PREFETCHING due to hw bug tracked in SGI PV930029
*/
ca_base->ca_control1 |= CA_AGPDMA_OP_ENB_COMBDELAY; /* PV895469 ? */
ca_base->ca_control2 &= ~(CA_GART_MEM_PARAM);
ca_base->ca_control2 |= (0x2ull << CA_GART_MEM_PARAM_SHFT);
tioca_kern->ca_gart_iscoherent = 1;
ca_base->ca_control2 &=
~(CA_GART_WR_PREFETCH_ENB | CA_GART_RD_PREFETCH_ENB);
/*
* Unmask GART fetch error interrupts. Clear residual errors first.
*/
ca_base->ca_int_status_alias = CA_GART_FETCH_ERR;
ca_base->ca_mult_error_alias = CA_GART_FETCH_ERR;
ca_base->ca_int_mask &= ~CA_GART_FETCH_ERR;
/*
* Program the aperature and gart registers in TIOCA
*/
ca_base->ca_gart_aperature = ap_reg;
ca_base->ca_gart_ptr_table = tioca_kern->ca_gart_coretalk_addr | 1;
return 0;
}
/**
* tioca_fastwrite_enable - enable AGP FW for a tioca and its functions
* @tioca_kernel: structure representing the CA
*
* Given a CA, scan all attached functions making sure they all support
* FastWrite. If so, enable FastWrite for all functions and the CA itself.
*/
void
tioca_fastwrite_enable(struct tioca_kernel *tioca_kern)
{
int cap_ptr;
uint64_t ca_control1;
uint32_t reg;
struct tioca *tioca_base;
struct pci_dev *pdev;
struct tioca_common *common;
common = tioca_kern->ca_common;
/*
* Scan all vga controllers on this bus making sure they all
* suport FW. If not, return.
*/
list_for_each_entry(pdev, tioca_kern->ca_devices, bus_list) {
if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
continue;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return; /* no AGP CAP means no FW */
pci_read_config_dword(pdev, cap_ptr + PCI_AGP_STATUS, &reg);
if (!(reg & PCI_AGP_STATUS_FW))
return; /* function doesn't support FW */
}
/*
* Set fw for all vga fn's
*/
list_for_each_entry(pdev, tioca_kern->ca_devices, bus_list) {
if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
continue;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
pci_read_config_dword(pdev, cap_ptr + PCI_AGP_COMMAND, &reg);
reg |= PCI_AGP_COMMAND_FW;
pci_write_config_dword(pdev, cap_ptr + PCI_AGP_COMMAND, reg);
}
/*
* Set ca's fw to match
*/
tioca_base = (struct tioca *)common->ca_common.bs_base;
ca_control1 = tioca_base->ca_control1;
ca_control1 |= CA_AGP_FW_ENABLE;
tioca_base->ca_control1 = ca_control1;
}
EXPORT_SYMBOL(tioca_fastwrite_enable); /* used by agp-sgi */
/**
* tioca_dma_d64 - create a DMA mapping using 64-bit direct mode
* @paddr: system physical address
*
* Map @paddr into 64-bit CA bus space. No device context is necessary.
* Bits 53:0 come from the coretalk address. We just need to mask in the
* following optional bits of the 64-bit pci address:
*
* 63:60 - Coretalk Packet Type - 0x1 for Mem Get/Put (coherent)
* 0x2 for PIO (non-coherent)
* We will always use 0x1
* 55:55 - Swap bytes Currently unused
*/
static uint64_t
tioca_dma_d64(unsigned long paddr)
{
dma_addr_t bus_addr;
bus_addr = PHYS_TO_TIODMA(paddr);
BUG_ON(!bus_addr);
BUG_ON(bus_addr >> 54);
/* Set upper nibble to Cache Coherent Memory op */
bus_addr |= (1UL << 60);
return bus_addr;
}
/**
* tioca_dma_d48 - create a DMA mapping using 48-bit direct mode
* @pdev: linux pci_dev representing the function
* @paddr: system physical address
*
* Map @paddr into 64-bit bus space of the CA associated with @pcidev_info.
*
* The CA agp 48 bit direct address falls out as follows:
*
* When direct mapping AGP addresses, the 48 bit AGP address is
* constructed as follows:
*
* [47:40] - Low 8 bits of the page Node ID extracted from coretalk
* address [47:40]. The upper 8 node bits are fixed
* and come from the xxx register bits [5:0]
* [39:38] - Chiplet ID extracted from coretalk address [39:38]
* [37:00] - node offset extracted from coretalk address [37:00]
*
* Since the node id in general will be non-zero, and the chiplet id
* will always be non-zero, it follows that the device must support
* a dma mask of at least 0xffffffffff (40 bits) to target node 0
* and in general should be 0xffffffffffff (48 bits) to target nodes
* up to 255. Nodes above 255 need the support of the xxx register,
* and so a given CA can only directly target nodes in the range
* xxx - xxx+255.
*/
static uint64_t
tioca_dma_d48(struct pci_dev *pdev, uint64_t paddr)
{
struct tioca_common *tioca_common;
struct tioca *ca_base;
uint64_t ct_addr;
dma_addr_t bus_addr;
uint32_t node_upper;
uint64_t agp_dma_extn;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);
tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
ca_base = (struct tioca *)tioca_common->ca_common.bs_base;
ct_addr = PHYS_TO_TIODMA(paddr);
if (!ct_addr)
return 0;
bus_addr = (dma_addr_t) (ct_addr & 0xffffffffffff);
node_upper = ct_addr >> 48;
if (node_upper > 64) {
printk(KERN_ERR "%s: coretalk addr 0x%p node id out "
"of range\n", __FUNCTION__, (void *)ct_addr);
return 0;
}
agp_dma_extn = ca_base->ca_agp_dma_addr_extn;
if (node_upper != (agp_dma_extn >> CA_AGP_DMA_NODE_ID_SHFT)) {
printk(KERN_ERR "%s: coretalk upper node (%u) "
"mismatch with ca_agp_dma_addr_extn (%lu)\n",
__FUNCTION__,
node_upper, (agp_dma_extn >> CA_AGP_DMA_NODE_ID_SHFT));
return 0;
}
return bus_addr;
}
/**
* tioca_dma_mapped - create a DMA mapping using a CA GART
* @pdev: linux pci_dev representing the function
* @paddr: host physical address to map
* @req_size: len (bytes) to map
*
* Map @paddr into CA address space using the GART mechanism. The mapped
* dma_addr_t is guarenteed to be contiguous in CA bus space.
*/
static dma_addr_t
tioca_dma_mapped(struct pci_dev *pdev, uint64_t paddr, size_t req_size)
{
int i, ps, ps_shift, entry, entries, mapsize, last_entry;
uint64_t xio_addr, end_xio_addr;
struct tioca_common *tioca_common;
struct tioca_kernel *tioca_kern;
dma_addr_t bus_addr = 0;
struct tioca_dmamap *ca_dmamap;
void *map;
unsigned long flags;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);;
tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
tioca_kern = (struct tioca_kernel *)tioca_common->ca_kernel_private;
xio_addr = PHYS_TO_TIODMA(paddr);
if (!xio_addr)
return 0;
spin_lock_irqsave(&tioca_kern->ca_lock, flags);
/*
* allocate a map struct
*/
ca_dmamap = kcalloc(1, sizeof(struct tioca_dmamap), GFP_ATOMIC);
if (!ca_dmamap)
goto map_return;
/*
* Locate free entries that can hold req_size. Account for
* unaligned start/length when allocating.
*/
ps = tioca_kern->ca_ap_pagesize; /* will be power of 2 */
ps_shift = ffs(ps) - 1;
end_xio_addr = xio_addr + req_size - 1;
entries = (end_xio_addr >> ps_shift) - (xio_addr >> ps_shift) + 1;
map = tioca_kern->ca_pcigart_pagemap;
mapsize = tioca_kern->ca_pcigart_entries;
entry = find_first_zero_bit(map, mapsize);
while (entry < mapsize) {
last_entry = find_next_bit(map, mapsize, entry);
if (last_entry - entry >= entries)
break;
entry = find_next_zero_bit(map, mapsize, last_entry);
}
if (entry > mapsize)
goto map_return;
for (i = 0; i < entries; i++)
set_bit(entry + i, map);
bus_addr = tioca_kern->ca_pciap_base + (entry * ps);
ca_dmamap->cad_dma_addr = bus_addr;
ca_dmamap->cad_gart_size = entries;
ca_dmamap->cad_gart_entry = entry;
list_add(&ca_dmamap->cad_list, &tioca_kern->ca_list);
if (xio_addr % ps) {
tioca_kern->ca_pcigart[entry] = tioca_paddr_to_gart(xio_addr);
bus_addr += xio_addr & (ps - 1);
xio_addr &= ~(ps - 1);
xio_addr += ps;
entry++;
}
while (xio_addr < end_xio_addr) {
tioca_kern->ca_pcigart[entry] = tioca_paddr_to_gart(xio_addr);
xio_addr += ps;
entry++;
}
tioca_tlbflush(tioca_kern);
map_return:
spin_unlock_irqrestore(&tioca_kern->ca_lock, flags);
return bus_addr;
}
/**
* tioca_dma_unmap - release CA mapping resources
* @pdev: linux pci_dev representing the function
* @bus_addr: bus address returned by an earlier tioca_dma_map
* @dir: mapping direction (unused)
*
* Locate mapping resources associated with @bus_addr and release them.
* For mappings created using the direct modes (64 or 48) there are no
* resources to release.
*/
void
tioca_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir)
{
int i, entry;
struct tioca_common *tioca_common;
struct tioca_kernel *tioca_kern;
struct tioca_dmamap *map;
struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(pdev);
unsigned long flags;
tioca_common = (struct tioca_common *)pcidev_info->pdi_pcibus_info;
tioca_kern = (struct tioca_kernel *)tioca_common->ca_kernel_private;
/* return straight away if this isn't be a mapped address */
if (bus_addr < tioca_kern->ca_pciap_base ||
bus_addr >= (tioca_kern->ca_pciap_base + tioca_kern->ca_pciap_size))
return;
spin_lock_irqsave(&tioca_kern->ca_lock, flags);
list_for_each_entry(map, &tioca_kern->ca_dmamaps, cad_list)
if (map->cad_dma_addr == bus_addr)
break;
BUG_ON(map == NULL);
entry = map->cad_gart_entry;
for (i = 0; i < map->cad_gart_size; i++, entry++) {
clear_bit(entry, tioca_kern->ca_pcigart_pagemap);
tioca_kern->ca_pcigart[entry] = 0;
}
tioca_tlbflush(tioca_kern);
list_del(&map->cad_list);
spin_unlock_irqrestore(&tioca_kern->ca_lock, flags);
kfree(map);
}
/**
* tioca_dma_map - map pages for PCI DMA
* @pdev: linux pci_dev representing the function
* @paddr: host physical address to map
* @byte_count: bytes to map
*
* This is the main wrapper for mapping host physical pages to CA PCI space.
* The mapping mode used is based on the devices dma_mask. As a last resort
* use the GART mapped mode.
*/
uint64_t
tioca_dma_map(struct pci_dev *pdev, uint64_t paddr, size_t byte_count)
{
uint64_t mapaddr;
/*
* If card is 64 or 48 bit addresable, use a direct mapping. 32
* bit direct is so restrictive w.r.t. where the memory resides that
* we don't use it even though CA has some support.
*/
if (pdev->dma_mask == ~0UL)
mapaddr = tioca_dma_d64(paddr);
else if (pdev->dma_mask == 0xffffffffffffUL)
mapaddr = tioca_dma_d48(pdev, paddr);
else
mapaddr = 0;
/* Last resort ... use PCI portion of CA GART */
if (mapaddr == 0)
mapaddr = tioca_dma_mapped(pdev, paddr, byte_count);
return mapaddr;
}
/**
* tioca_error_intr_handler - SGI TIO CA error interrupt handler
* @irq: unused
* @arg: pointer to tioca_common struct for the given CA
* @pt: unused
*
* Handle a CA error interrupt. Simply a wrapper around a SAL call which
* defers processing to the SGI prom.
*/
static irqreturn_t
tioca_error_intr_handler(int irq, void *arg, struct pt_regs *pt)
{
struct tioca_common *soft = arg;
struct ia64_sal_retval ret_stuff;
uint64_t segment;
uint64_t busnum;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
segment = 0;
busnum = soft->ca_common.bs_persist_busnum;
SAL_CALL_NOLOCK(ret_stuff,
(u64) SN_SAL_IOIF_ERROR_INTERRUPT,
segment, busnum, 0, 0, 0, 0, 0);
return IRQ_HANDLED;
}
/**
* tioca_bus_fixup - perform final PCI fixup for a TIO CA bus
* @prom_bussoft: Common prom/kernel struct representing the bus
*
* Replicates the tioca_common pointed to by @prom_bussoft in kernel
* space. Allocates and initializes a kernel-only area for a given CA,
* and sets up an irq for handling CA error interrupts.
*
* On successful setup, returns the kernel version of tioca_common back to
* the caller.
*/
void *
tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft)
{
struct tioca_common *tioca_common;
struct tioca_kernel *tioca_kern;
struct pci_bus *bus;
/* sanity check prom rev */
if (sn_sal_rev_major() < 4 ||
(sn_sal_rev_major() == 4 && sn_sal_rev_minor() < 6)) {
printk
(KERN_ERR "%s: SGI prom rev 4.06 or greater required "
"for tioca support\n", __FUNCTION__);
return NULL;
}
/*
* Allocate kernel bus soft and copy from prom.
*/
tioca_common = kcalloc(1, sizeof(struct tioca_common), GFP_KERNEL);
if (!tioca_common)
return NULL;
memcpy(tioca_common, prom_bussoft, sizeof(struct tioca_common));
tioca_common->ca_common.bs_base |= __IA64_UNCACHED_OFFSET;
/* init kernel-private area */
tioca_kern = kcalloc(1, sizeof(struct tioca_kernel), GFP_KERNEL);
if (!tioca_kern) {
kfree(tioca_common);
return NULL;
}
tioca_kern->ca_common = tioca_common;
spin_lock_init(&tioca_kern->ca_lock);
INIT_LIST_HEAD(&tioca_kern->ca_dmamaps);
tioca_kern->ca_closest_node =
nasid_to_cnodeid(tioca_common->ca_closest_nasid);
tioca_common->ca_kernel_private = (uint64_t) tioca_kern;
bus = pci_find_bus(0, tioca_common->ca_common.bs_persist_busnum);
BUG_ON(!bus);
tioca_kern->ca_devices = &bus->devices;
/* init GART */
if (tioca_gart_init(tioca_kern) < 0) {
kfree(tioca_kern);
kfree(tioca_common);
return NULL;
}
tioca_gart_found++;
list_add(&tioca_kern->ca_list, &tioca_list);
if (request_irq(SGI_TIOCA_ERROR,
tioca_error_intr_handler,
SA_SHIRQ, "TIOCA error", (void *)tioca_common))
printk(KERN_WARNING
"%s: Unable to get irq %d. "
"Error interrupts won't be routed for TIOCA bus %d\n",
__FUNCTION__, SGI_TIOCA_ERROR,
(int)tioca_common->ca_common.bs_persist_busnum);
return tioca_common;
}
static struct sn_pcibus_provider tioca_pci_interfaces = {
.dma_map = tioca_dma_map,
.dma_map_consistent = tioca_dma_map,
.dma_unmap = tioca_dma_unmap,
.bus_fixup = tioca_bus_fixup,
};
/**
* tioca_init_provider - init SN PCI provider ops for TIO CA
*/
int
tioca_init_provider(void)
{
sn_pci_provider[PCIIO_ASIC_TYPE_TIOCA] = &tioca_pci_interfaces;
return 0;
}
drivers/char/Kconfig
浏览文件 @ fc67b16e
......@@ -399,6 +399,20 @@ config SGI_SNSC
controller communication from user space (you want this!),
say Y. Otherwise, say N.
config SGI_TIOCX
bool "SGI TIO CX driver support"
depends on (IA64_SGI_SN2 || IA64_GENERIC)
help
If you have an SGI Altix and you have fpga devices attached
to your TIO, say Y here, otherwise say N.
config SGI_MBCS
tristate "SGI FPGA Core Services driver support"
depends on (IA64_SGI_SN2 || IA64_GENERIC)
help
If you have an SGI Altix with an attached SABrick
say Y or M here, otherwise say N.
source "drivers/serial/Kconfig"
config UNIX98_PTYS
......
drivers/char/Makefile
浏览文件 @ fc67b16e
......@@ -42,11 +42,12 @@ obj-$(CONFIG_SX) += sx.o generic_serial.o
obj-$(CONFIG_RIO) += rio/ generic_serial.o
obj-$(CONFIG_HVC_CONSOLE) += hvc_console.o hvsi.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
obj-$(CONFIG_SGI_SNSC) += snsc.o
obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
obj-$(CONFIG_MMTIMER) += mmtimer.o
obj-$(CONFIG_VIOCONS) += viocons.o
obj-$(CONFIG_VIOTAPE) += viotape.o
obj-$(CONFIG_HVCS) += hvcs.o
obj-$(CONFIG_SGI_MBCS) += mbcs.o
obj-$(CONFIG_PRINTER) += lp.o
obj-$(CONFIG_TIPAR) += tipar.o
......
drivers/char/mbcs.c 0 → 100644
浏览文件 @ fc67b16e
此差异已折叠。
drivers/char/mbcs.h 0 → 100644
浏览文件 @ fc67b16e
此差异已折叠。
drivers/char/snsc.c
浏览文件 @ fc67b16e
......@@ -374,6 +374,7 @@ scdrv_init(void)
void *salbuf;
struct class_simple *snsc_class;
dev_t first_dev, dev;
nasid_t event_nasid = ia64_sn_get_console_nasid();
if (alloc_chrdev_region(&first_dev, 0, numionodes,
SYSCTL_BASENAME) < 0) {
......@@ -441,6 +442,13 @@ scdrv_init(void)
ia64_sn_irtr_intr_enable(scd->scd_nasid,
0 /*ignored */ ,
SAL_IROUTER_INTR_RECV);
/* on the console nasid, prepare to receive
* system controller environmental events
*/
if(scd->scd_nasid == event_nasid) {
scdrv_event_init(scd);
}
}
return 0;
}
......
drivers/char/snsc.h
浏览文件 @ fc67b16e
......@@ -47,4 +47,44 @@ struct sysctl_data_s {
nasid_t scd_nasid; /* Node on which subchannels are opened. */
};
/* argument types */
#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */
#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */
#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low
* 7 bits will contain the data
* length. */
#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f
/* system controller event codes */
#define EV_CLASS_MASK 0xf000ul
#define EV_SEVERITY_MASK 0x0f00ul
#define EV_COMPONENT_MASK 0x00fful
#define EV_CLASS_POWER 0x1000ul
#define EV_CLASS_FAN 0x2000ul
#define EV_CLASS_TEMP 0x3000ul
#define EV_CLASS_ENV 0x4000ul
#define EV_CLASS_TEST_FAULT 0x5000ul
#define EV_CLASS_TEST_WARNING 0x6000ul
#define EV_CLASS_PWRD_NOTIFY 0x8000ul
#define EV_SEVERITY_POWER_STABLE 0x0000ul
#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul
#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul
#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul
#define EV_SEVERITY_FAN_STABLE 0x0000ul
#define EV_SEVERITY_FAN_WARNING 0x0100ul
#define EV_SEVERITY_FAN_FAULT 0x0200ul
#define EV_SEVERITY_TEMP_STABLE 0x0000ul
#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul
#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul
#define EV_SEVERITY_TEMP_FAULT 0x0300ul
void scdrv_event_init(struct sysctl_data_s *);
#endif /* _SN_SYSCTL_H_ */
drivers/char/snsc_event.c 0 → 100644
浏览文件 @ fc67b16e
/*
* SN Platform system controller communication support
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
*/
/*
* System controller event handler
*
* These routines deal with environmental events arriving from the
* system controllers.
*/
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/byteorder/generic.h>
#include <asm/sn/sn_sal.h>
#include "snsc.h"
static struct subch_data_s *event_sd;
void scdrv_event(unsigned long);
DECLARE_TASKLET(sn_sysctl_event, scdrv_event, 0);
/*
* scdrv_event_interrupt
*
* Pull incoming environmental events off the physical link to the
* system controller and put them in a temporary holding area in SAL.
* Schedule scdrv_event() to move them along to their ultimate
* destination.
*/
static irqreturn_t
scdrv_event_interrupt(int irq, void *subch_data, struct pt_regs *regs)
{
struct subch_data_s *sd = subch_data;
unsigned long flags;
int status;
spin_lock_irqsave(&sd->sd_rlock, flags);
status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
if ((status > 0) && (status & SAL_IROUTER_INTR_RECV)) {
tasklet_schedule(&sn_sysctl_event);
}
spin_unlock_irqrestore(&sd->sd_rlock, flags);
return IRQ_HANDLED;
}
/*
* scdrv_parse_event
*
* Break an event (as read from SAL) into useful pieces so we can decide
* what to do with it.
*/
static int
scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc)
{
char *desc_end;
/* record event source address */
*src = be32_to_cpup((__be32 *)event);
event += 4; /* move on to event code */
/* record the system controller's event code */
*code = be32_to_cpup((__be32 *)event);
event += 4; /* move on to event arguments */
/* how many arguments are in the packet? */
if (*event++ != 2) {
/* if not 2, give up */
return -1;
}
/* parse out the ESP code */
if (*event++ != IR_ARG_INT) {
/* not an integer argument, so give up */
return -1;
}
*esp_code = be32_to_cpup((__be32 *)event);
event += 4;
/* parse out the event description */
if (*event++ != IR_ARG_ASCII) {
/* not an ASCII string, so give up */
return -1;
}
event[CHUNKSIZE-1] = '\0'; /* ensure this string ends! */
event += 2; /* skip leading CR/LF */
desc_end = desc + sprintf(desc, "%s", event);
/* strip trailing CR/LF (if any) */
for (desc_end--;
(desc_end != desc) && ((*desc_end == 0xd) || (*desc_end == 0xa));
desc_end--) {
*desc_end = '\0';
}
return 0;
}
/*
* scdrv_event_severity
*
* Figure out how urgent a message we should write to the console/syslog
* via printk.
*/
static char *
scdrv_event_severity(int code)
{
int ev_class = (code & EV_CLASS_MASK);
int ev_severity = (code & EV_SEVERITY_MASK);
char *pk_severity = KERN_NOTICE;
switch (ev_class) {
case EV_CLASS_POWER:
switch (ev_severity) {
case EV_SEVERITY_POWER_LOW_WARNING:
case EV_SEVERITY_POWER_HIGH_WARNING:
pk_severity = KERN_WARNING;
break;
case EV_SEVERITY_POWER_HIGH_FAULT:
case EV_SEVERITY_POWER_LOW_FAULT:
pk_severity = KERN_ALERT;
break;
}
break;
case EV_CLASS_FAN:
switch (ev_severity) {
case EV_SEVERITY_FAN_WARNING:
pk_severity = KERN_WARNING;
break;
case EV_SEVERITY_FAN_FAULT:
pk_severity = KERN_CRIT;
break;
}
break;
case EV_CLASS_TEMP:
switch (ev_severity) {
case EV_SEVERITY_TEMP_ADVISORY:
pk_severity = KERN_WARNING;
break;
case EV_SEVERITY_TEMP_CRITICAL:
pk_severity = KERN_CRIT;
break;
case EV_SEVERITY_TEMP_FAULT:
pk_severity = KERN_ALERT;
break;
}
break;
case EV_CLASS_ENV:
pk_severity = KERN_ALERT;
break;
case EV_CLASS_TEST_FAULT:
pk_severity = KERN_ALERT;
break;
case EV_CLASS_TEST_WARNING:
pk_severity = KERN_WARNING;
break;
case EV_CLASS_PWRD_NOTIFY:
pk_severity = KERN_ALERT;
break;
}
return pk_severity;
}
/*
* scdrv_dispatch_event
*
* Do the right thing with an incoming event. That's often nothing
* more than printing it to the system log. For power-down notifications
* we start a graceful shutdown.
*/
static void
scdrv_dispatch_event(char *event, int len)
{
int code, esp_code, src;
char desc[CHUNKSIZE];
char *severity;
if (scdrv_parse_event(event, &src, &code, &esp_code, desc) < 0) {
/* ignore uninterpretible event */
return;
}
/* how urgent is the message? */
severity = scdrv_event_severity(code);
if ((code & EV_CLASS_MASK) == EV_CLASS_PWRD_NOTIFY) {
struct task_struct *p;
/* give a SIGPWR signal to init proc */
/* first find init's task */
read_lock(&tasklist_lock);
for_each_process(p) {
if (p->pid == 1)
break;
}
if (p) { /* we found init's task */
printk(KERN_EMERG "Power off indication received. Initiating power fail sequence...\n");
force_sig(SIGPWR, p);
} else { /* failed to find init's task - just give message(s) */
printk(KERN_WARNING "Failed to find init proc to handle power off!\n");
printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
}
read_unlock(&tasklist_lock);
} else {
/* print to system log */
printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
}
}
/*
* scdrv_event
*
* Called as a tasklet when an event arrives from the L1. Read the event
* from where it's temporarily stored in SAL and call scdrv_dispatch_event()
* to send it on its way. Keep trying to read events until SAL indicates
* that there are no more immediately available.
*/
void
scdrv_event(unsigned long dummy)
{
int status;
int len;
unsigned long flags;
struct subch_data_s *sd = event_sd;
/* anything to read? */
len = CHUNKSIZE;
spin_lock_irqsave(&sd->sd_rlock, flags);
status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
sd->sd_rb, &len);
while (!(status < 0)) {
spin_unlock_irqrestore(&sd->sd_rlock, flags);
scdrv_dispatch_event(sd->sd_rb, len);
len = CHUNKSIZE;
spin_lock_irqsave(&sd->sd_rlock, flags);
status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
sd->sd_rb, &len);
}
spin_unlock_irqrestore(&sd->sd_rlock, flags);
}
/*
* scdrv_event_init
*
* Sets up a system controller subchannel to begin receiving event
* messages. This is sort of a specialized version of scdrv_open()
* in drivers/char/sn_sysctl.c.
*/
void
scdrv_event_init(struct sysctl_data_s *scd)
{
int rv;
event_sd = kmalloc(sizeof (struct subch_data_s), GFP_KERNEL);
if (event_sd == NULL) {
printk(KERN_WARNING "%s: couldn't allocate subchannel info"
" for event monitoring\n", __FUNCTION__);
return;
}
/* initialize subch_data_s fields */
memset(event_sd, 0, sizeof (struct subch_data_s));
event_sd->sd_nasid = scd->scd_nasid;
spin_lock_init(&event_sd->sd_rlock);
/* ask the system controllers to send events to this node */
event_sd->sd_subch = ia64_sn_sysctl_event_init(scd->scd_nasid);
if (event_sd->sd_subch < 0) {
kfree(event_sd);
printk(KERN_WARNING "%s: couldn't open event subchannel\n",
__FUNCTION__);
return;
}
/* hook event subchannel up to the system controller interrupt */
rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
SA_SHIRQ | SA_INTERRUPT,
"system controller events", event_sd);
if (rv) {
printk(KERN_WARNING "%s: irq request failed (%d)\n",
__FUNCTION__, rv);
ia64_sn_irtr_close(event_sd->sd_nasid, event_sd->sd_subch);
kfree(event_sd);
return;
}
}
include/asm-ia64/hw_irq.h
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......@@ -81,6 +81,7 @@ extern __u8 isa_irq_to_vector_map[16];
extern struct hw_interrupt_type irq_type_ia64_lsapic; /* CPU-internal interrupt controller */
extern int assign_irq_vector_nopanic (int irq); /* allocate a free vector without panic */
extern int assign_irq_vector (int irq); /* allocate a free vector */
extern void free_irq_vector (int vector);
extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
......
include/asm-ia64/pal.h
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include/asm-ia64/perfmon.h
浏览文件 @ fc67b16e
......@@ -254,6 +254,18 @@ extern int pfm_mod_write_dbrs(struct task_struct *task, void *req, unsigned int
#define PFM_CPUINFO_DCR_PP 0x2 /* if set the system wide session has started */
#define PFM_CPUINFO_EXCL_IDLE 0x4 /* the system wide session excludes the idle task */
/*
* sysctl control structure. visible to sampling formats
*/
typedef struct {
int debug; /* turn on/off debugging via syslog */
int debug_ovfl; /* turn on/off debug printk in overflow handler */
int fastctxsw; /* turn on/off fast (unsecure) ctxsw */
int expert_mode; /* turn on/off value checking */
} pfm_sysctl_t;
extern pfm_sysctl_t pfm_sysctl;
#endif /* __KERNEL__ */
#endif /* _ASM_IA64_PERFMON_H */
include/asm-ia64/pgalloc.h
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include/asm-ia64/processor.h
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include/asm-ia64/sal.h
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include/asm-ia64/smp.h
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include/asm-ia64/sn/addrs.h
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include/asm-ia64/sn/bte.h
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include/asm-ia64/sn/geo.h
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include/asm-ia64/sn/nodepda.h
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include/asm-ia64/sn/pda.h
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include/asm-ia64/sn/shub_mmr.h
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include/asm-ia64/sn/sn_sal.h
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include/asm-ia64/sn/tioca.h 0 → 100644
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include/asm-ia64/sn/tioca_provider.h 0 → 100644
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include/asm-ia64/sn/tiocx.h 0 → 100644
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include/asm-ia64/sn/types.h
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此差异已折叠。
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