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Commit d125dc40 authored by Paul Mackerras's avatar Paul Mackerras
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Merge samba.org:/stuff/paulus/kernel/linux-2.5 

into samba.org:/stuff/paulus/kernel/for-linus-ppc
parents ebcf3a0d 4eb7de4f
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Showing with 906 additions and 895 deletions
arch/alpha/vmlinux.lds.S
View file @ d125dc40
......@@ -74,6 +74,9 @@ SECTIONS
__con_initcall_end = .;
}
. = ALIGN(8);
SECURITY_INIT
. = ALIGN(64);
__per_cpu_start = .;
.data.percpu : { *(.data.percpu) }
......
arch/arm/vmlinux-armo.lds.in
View file @ d125dc40
......@@ -43,6 +43,7 @@ SECTIONS
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(32768);
__init_end = .;
}
......
arch/arm/vmlinux-armv.lds.in
View file @ d125dc40
......@@ -53,6 +53,7 @@ SECTIONS
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(32);
__initramfs_start = .;
usr/built-in.o(.init.ramfs)
......
arch/cris/vmlinux.lds.S
View file @ d125dc40
......@@ -74,7 +74,12 @@ SECTIONS
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
}
.security_initcall.init : {
__security_initcall_start = .;
*(.security_initcall.init)
__security_initcall_end = .;
/* We fill to the next page, so we can discard all init
pages without needing to consider what payload might be
appended to the kernel image. */
......
arch/h8300/platform/h8300h/generic/rom.ld
View file @ d125dc40
......@@ -83,6 +83,7 @@ SECTIONS
___con_initcall_start = .;
*(.con_initcall.init)
___con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4);
___initramfs_start = .;
*(.init.ramfs)
......
arch/i386/vmlinux.lds.S
View file @ d125dc40
......@@ -81,6 +81,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4);
__alt_instructions = .;
.altinstructions : { *(.altinstructions) }
......
arch/ia64/vmlinux.lds.S
View file @ d125dc40
......@@ -141,6 +141,10 @@ SECTIONS
.con_initcall.init : AT(ADDR(.con_initcall.init) - PAGE_OFFSET)
{ *(.con_initcall.init) }
__con_initcall_end = .;
__security_initcall_start = .;
.security_initcall.init : AT(ADDR(.security_initcall.init) - PAGE_OFFSET)
{ *(.security_initcall.init) }
__security_initcall_end = .;
. = ALIGN(PAGE_SIZE);
__init_end = .;
......
arch/m68k/vmlinux-std.lds
View file @ d125dc40
......@@ -67,6 +67,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/m68k/vmlinux-sun3.lds
View file @ d125dc40
......@@ -61,6 +61,7 @@ __init_begin = .;
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/m68knommu/vmlinux.lds.S
View file @ d125dc40
......@@ -277,9 +277,7 @@ SECTIONS {
__con_initcall_start = .;
*(.con_initcall.init)
__con_initcall_end = .;
__security_initcall_start = .;
*(.security_initcall.init)
__security_initcall_end = .;
SECURITY_INIT
. = ALIGN(4);
__initramfs_start = .;
*(.init.ramfs)
......
arch/mips/vmlinux.lds.S
View file @ d125dc40
......@@ -54,6 +54,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096); /* Align double page for init_task_union */
__init_end = .;
......
arch/mips64/vmlinux.lds.S
View file @ d125dc40
......@@ -53,6 +53,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096); /* Align double page for init_task_union */
__init_end = .;
......
arch/parisc/vmlinux.lds.S
View file @ d125dc40
......@@ -80,6 +80,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/ppc/vmlinux.lds.S
View file @ d125dc40
......@@ -119,6 +119,8 @@ SECTIONS
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
__start___ftr_fixup = .;
__ftr_fixup : { *(__ftr_fixup) }
__stop___ftr_fixup = .;
......
arch/ppc64/vmlinux.lds.S
View file @ d125dc40
......@@ -104,6 +104,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/s390/vmlinux.lds.S
View file @ d125dc40
......@@ -94,6 +94,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(256);
__initramfs_start = .;
.init.ramfs : { *(.init.initramfs) }
......
arch/sh/vmlinux.lds.S
View file @ d125dc40
......@@ -71,6 +71,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
__machvec_start = .;
.machvec.init : { *(.machvec.init) }
__machvec_end = .;
......
arch/sparc/vmlinux.lds.S
View file @ d125dc40
......@@ -62,6 +62,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/sparc64/vmlinux.lds.S
View file @ d125dc40
......@@ -68,6 +68,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
arch/x86_64/Kconfig
View file @ d125dc40
......@@ -52,6 +52,18 @@ config EARLY_PRINTK
klogd/syslogd or the X server. You should normally N here, unless
you want to debug such a crash.
config HPET_TIMER
bool
default y
help
Use the IA-PC HPET (High Precision Event Timer) to manage
time in preference to the PIT and RTC, if a HPET is
present. The HPET provides a stable time base on SMP
systems, unlike the RTC, but it is more expensive to access,
as it is off-chip. You can find the HPET spec at
<http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.
If unsure, say Y.
config GENERIC_ISA_DMA
bool
......
arch/x86_64/ia32/ia32entry.S
View file @ d125dc40
......@@ -47,6 +47,7 @@
ENTRY(ia32_cstar_target)
swapgs
movl %esp,%r8d
movq %r8,%gs:pda_oldrsp
movq %gs:pda_kernelstack,%rsp
sti
SAVE_ARGS 8,1
......
arch/x86_64/kernel/acpi/boot.c
View file @ d125dc40
......@@ -244,9 +244,11 @@ acpi_parse_hpet (
return -1;
}
hpet.address = hpet_tbl->addr.addrl | ((long) hpet_tbl->addr.addrh << 32);
vxtime.hpet_address = hpet_tbl->addr.addrl |
((long) hpet_tbl->addr.addrh << 32);
printk(KERN_INFO "acpi: HPET id: %#x base: %#lx\n", hpet_tbl->id, hpet.address);
printk(KERN_INFO "acpi: HPET id: %#x base: %#lx\n",
hpet_tbl->id, vxtime.hpet_address);
return 0;
}
......
arch/x86_64/kernel/apic.c
View file @ d125dc40
......@@ -690,7 +690,13 @@ static void setup_APIC_timer(unsigned int clocks)
}
/* wait for irq slice */
{
if (vxtime.hpet_address) {
int trigger = hpet_readl(HPET_T0_CMP);
while (hpet_readl(HPET_COUNTER) >= trigger)
/* do nothing */ ;
while (hpet_readl(HPET_COUNTER) < trigger)
/* do nothing */ ;
} else {
int c1, c2;
outb_p(0x00, 0x43);
c2 = inb_p(0x40);
......
arch/x86_64/kernel/bluesmoke.c
View file @ d125dc40
......@@ -363,22 +363,12 @@ static void __init k8_mcheck_init(struct cpuinfo_x86 *c)
machine_check_vector = k8_machine_check;
for (i = 0; i < banks; i++) {
u64 val = ((1UL<<i) & disabled_banks) ? 0 : ~0UL;
if (val && i == 4)
val = k8_nb_flags;
wrmsrl(MSR_IA32_MC0_CTL+4*i, val);
wrmsrl(MSR_IA32_MC0_STATUS+4*i,0);
}
nb = find_k8_nb();
if (nb != NULL) {
u32 reg, reg2;
pci_read_config_dword(nb, 0x40, &reg);
pci_write_config_dword(nb, 0x40, k8_nb_flags);
pci_read_config_dword(nb, 0x44, &reg2);
pci_write_config_dword(nb, 0x44, reg2);
printk(KERN_INFO "Machine Check for K8 Northbridge %d enabled (%x,%x)\n",
nb->devfn, reg, reg2);
ignored_banks |= (1UL<<4);
}
set_in_cr4(X86_CR4_MCE);
if (mcheck_interval && (smp_processor_id() == 0)) {
......
arch/x86_64/kernel/pci-gart.c
View file @ d125dc40
......@@ -173,12 +173,10 @@ void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
if (iommu_page == -1)
goto error;
/* Fill in the GATT, allocating pages as needed. */
/* Fill in the GATT */
for (i = 0; i < size; i++) {
unsigned long phys_mem;
void *mem = memory + i*PAGE_SIZE;
if (i > 0)
atomic_inc(&virt_to_page(mem)->count);
phys_mem = virt_to_phys(mem);
BUG_ON(phys_mem & ~PHYSICAL_PAGE_MASK);
iommu_gatt_base[iommu_page + i] = GPTE_ENCODE(phys_mem);
......@@ -206,16 +204,14 @@ void pci_free_consistent(struct pci_dev *hwdev, size_t size,
size = round_up(size, PAGE_SIZE);
if (bus >= iommu_bus_base && bus <= iommu_bus_base + iommu_size) {
unsigned pages = size >> PAGE_SHIFT;
int i;
iommu_page = (bus - iommu_bus_base) >> PAGE_SHIFT;
vaddr = __va(GPTE_DECODE(iommu_gatt_base[iommu_page]));
#ifdef CONFIG_IOMMU_DEBUG
int i;
for (i = 0; i < pages; i++) {
u64 pte = iommu_gatt_base[iommu_page + i];
BUG_ON((pte & GPTE_VALID) == 0);
iommu_gatt_base[iommu_page + i] = 0;
}
#endif
free_iommu(iommu_page, pages);
}
free_pages((unsigned long)vaddr, get_order(size));
......@@ -319,11 +315,6 @@ dma_addr_t pci_map_single(struct pci_dev *dev, void *addr, size_t size, int dir)
*/
iommu_gatt_base[iommu_page + i] = GPTE_ENCODE(phys_mem);
#ifdef CONFIG_IOMMU_DEBUG
/* paranoia check */
BUG_ON(GPTE_DECODE(iommu_gatt_base[iommu_page+i]) != phys_mem);
#endif
#ifdef CONFIG_IOMMU_LEAK
/* XXX need eventually caller of pci_map_sg */
if (iommu_leak_tab)
......@@ -350,7 +341,6 @@ void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
return;
iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;
npages = round_up(size + (dma_addr & ~PAGE_MASK), PAGE_SIZE) >> PAGE_SHIFT;
#ifdef CONFIG_IOMMU_DEBUG
int i;
for (i = 0; i < npages; i++) {
iommu_gatt_base[iommu_page + i] = 0;
......@@ -359,7 +349,6 @@ void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
iommu_leak_tab[iommu_page + i] = 0;
#endif
}
#endif
free_iommu(iommu_page, npages);
}
......
arch/x86_64/kernel/process.c
View file @ d125dc40
......@@ -150,7 +150,7 @@ __setup("idle=", idle_setup);
/* Prints also some state that isn't saved in the pt_regs */
void show_regs(struct pt_regs * regs)
void __show_regs(struct pt_regs * regs)
{
unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L, fs, gs, shadowgs;
unsigned int fsindex,gsindex;
......@@ -192,7 +192,11 @@ void show_regs(struct pt_regs * regs)
fs,fsindex,gs,gsindex,shadowgs);
printk("CS: %04x DS: %04x ES: %04x CR0: %016lx\n", cs, ds, es, cr0);
printk("CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4);
}
void show_regs(struct pt_regs *regs)
{
__show_regs(regs);
show_trace(&regs->rsp);
}
......
arch/x86_64/kernel/smpboot.c
View file @ d125dc40
......@@ -67,6 +67,8 @@ struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
/* Set when the idlers are all forked */
int smp_threads_ready;
extern void time_init_smp(void);
/*
* Trampoline 80x86 program as an array.
*/
......@@ -760,7 +762,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
if (APIC_init_uniprocessor())
printk(KERN_NOTICE "Local APIC not detected."
" Using dummy APIC emulation.\n");
return;
goto smp_done;
}
/*
......@@ -784,7 +786,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
cpu_online_map = phys_cpu_present_map = 1;
phys_cpu_present_map = 1;
disable_apic = 1;
return;
goto smp_done;
}
verify_local_APIC();
......@@ -799,7 +801,7 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
cpu_online_map = phys_cpu_present_map = 1;
phys_cpu_present_map = 1;
disable_apic = 1;
return;
goto smp_done;
}
connect_bsp_APIC();
......@@ -883,6 +885,9 @@ static void __init smp_boot_cpus(unsigned int max_cpus)
*/
if (cpu_has_tsc && cpucount)
synchronize_tsc_bp();
smp_done:
time_init_smp();
}
/* These are wrappers to interface to the new boot process. Someone
......
arch/x86_64/kernel/time.c
View file @ d125dc40
......@@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/device.h>
#include <linux/bcd.h>
#include <asm/pgtable.h>
#include <asm/vsyscall.h>
#include <asm/timex.h>
#ifdef CONFIG_X86_LOCAL_APIC
......@@ -35,41 +36,61 @@ u64 jiffies_64 = INITIAL_JIFFIES;
extern int using_apic_timer;
spinlock_t rtc_lock = SPIN_LOCK_UNLOCKED;
spinlock_t i8253_lock = SPIN_LOCK_UNLOCKED;
extern int using_apic_timer;
extern void smp_local_timer_interrupt(struct pt_regs * regs);
#undef HPET_HACK_ENABLE_DANGEROUS
unsigned int cpu_khz; /* TSC clocks / usec, not used here */
unsigned long hpet_period; /* fsecs / HPET clock */
unsigned long hpet_tick; /* HPET clocks / interrupt */
int hpet_report_lost_ticks; /* command line option */
unsigned long vxtime_hz = 1193182;
int report_lost_ticks; /* command line option */
struct hpet_data __hpet __section_hpet; /* address, quotient, trigger, hz */
struct vxtime_data __vxtime __section_vxtime; /* for vsyscalls */
volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
unsigned long __wall_jiffies __section_wall_jiffies = INITIAL_JIFFIES;
struct timespec __xtime __section_xtime;
struct timezone __sys_tz __section_sys_tz;
static inline void rdtscll_sync(unsigned long *tsc)
{
#ifdef CONFIG_SMP
sync_core();
#endif
rdtscll(*tsc);
}
/*
* do_gettimeoffset() returns microseconds since last timer interrupt was
* triggered by hardware. A memory read of HPET is slower than a register read
* of TSC, but much more reliable. It's also synchronized to the timer
* interrupt. Note that do_gettimeoffset() may return more than hpet_tick, if a
* timer interrupt has happened already, but hpet.trigger wasn't updated yet.
* timer interrupt has happened already, but vxtime.trigger wasn't updated yet.
* This is not a problem, because jiffies hasn't updated either. They are bound
* together by xtime_lock.
*/
inline unsigned int do_gettimeoffset(void)
static inline unsigned int do_gettimeoffset_tsc(void)
{
unsigned long t;
sync_core();
rdtscll(t);
return (t - hpet.last_tsc) * (1000000L / HZ) / hpet.ticks + hpet.offset;
unsigned long x;
rdtscll_sync(&t);
x = ((t - vxtime.last_tsc) * vxtime.tsc_quot) >> 32;
return x;
}
static inline unsigned int do_gettimeoffset_hpet(void)
{
return ((hpet_readl(HPET_COUNTER) - vxtime.last) * vxtime.quot) >> 32;
}
unsigned int (*do_gettimeoffset)(void) = do_gettimeoffset_tsc;
/*
* This version of gettimeofday() has microsecond resolution and better than
* microsecond precision, as we're using at least a 10 MHz (usually 14.31818
......@@ -87,7 +108,8 @@ void do_gettimeofday(struct timeval *tv)
sec = xtime.tv_sec;
usec = xtime.tv_nsec / 1000;
t = (jiffies - wall_jiffies) * (1000000L / HZ) + do_gettimeoffset();
t = (jiffies - wall_jiffies) * (1000000L / HZ) +
do_gettimeoffset();
usec += t;
} while (read_seqretry(&xtime_lock, seq));
......@@ -107,7 +129,7 @@ void do_settimeofday(struct timeval *tv)
write_seqlock_irq(&xtime_lock);
tv->tv_usec -= do_gettimeoffset() +
(jiffies - wall_jiffies) * tick_usec;
(jiffies - wall_jiffies) * (USEC_PER_SEC/HZ);
while (tv->tv_usec < 0) {
tv->tv_usec += 1000000;
......@@ -178,8 +200,8 @@ static void set_rtc_mmss(unsigned long nowtime)
CMOS_WRITE(real_seconds, RTC_SECONDS);
CMOS_WRITE(real_minutes, RTC_MINUTES);
} else
printk(KERN_WARNING "time.c: can't update CMOS clock from %d to %d\n",
cmos_minutes, real_minutes);
printk(KERN_WARNING "time.c: can't update CMOS clock "
"from %d to %d\n", cmos_minutes, real_minutes);
/*
* The following flags have to be released exactly in this order, otherwise the
......@@ -198,6 +220,8 @@ static void set_rtc_mmss(unsigned long nowtime)
static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
static unsigned long rtc_update = 0;
unsigned long tsc, lost = 0;
int delay, offset = 0;
/*
* Here we are in the timer irq handler. We have irqs locally disabled (so we
......@@ -208,17 +232,53 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
write_seqlock(&xtime_lock);
{
unsigned long t;
if (vxtime.hpet_address) {
offset = hpet_readl(HPET_T0_CMP) - hpet_tick;
delay = hpet_readl(HPET_COUNTER) - offset;
} else {
spin_lock(&i8253_lock);
outb_p(0x00, 0x43);
delay = inb_p(0x40);
delay |= inb(0x40) << 8;
spin_unlock(&i8253_lock);
delay = LATCH - 1 - delay;
}
sync_core();
rdtscll(t);
hpet.offset = (t - hpet.last_tsc) * (1000000L / HZ) / hpet.ticks + hpet.offset - 1000000L / HZ;
if (hpet.offset >= 1000000L / HZ)
hpet.offset = 0;
hpet.ticks = min_t(long, max_t(long, (t - hpet.last_tsc) * (1000000L / HZ) / (1000000L / HZ - hpet.offset),
cpu_khz * 1000/HZ * 15 / 16), cpu_khz * 1000/HZ * 16 / 15);
hpet.last_tsc = t;
rdtscll_sync(&tsc);
if (vxtime.mode == VXTIME_HPET) {
if (offset - vxtime.last > hpet_tick) {
lost = (offset - vxtime.last) / hpet_tick - 1;
}
vxtime.last = offset;
} else {
offset = (((tsc - vxtime.last_tsc) *
vxtime.tsc_quot) >> 32) - (USEC_PER_SEC / HZ);
if (offset < 0)
offset = 0;
if (offset > (USEC_PER_SEC / HZ)) {
lost = offset / (USEC_PER_SEC / HZ);
offset %= (USEC_PER_SEC / HZ);
}
vxtime.last_tsc = tsc - vxtime.quot * delay / vxtime.tsc_quot;
if ((((tsc - vxtime.last_tsc) *
vxtime.tsc_quot) >> 32) < offset)
vxtime.last_tsc = tsc -
(((long) offset << 32) / vxtime.tsc_quot) - 1;
}
if (lost) {
if (report_lost_ticks)
printk(KERN_WARNING "time.c: Lost %ld timer "
"tick(s)! (rip %016lx)\n",
(offset - vxtime.last) / hpet_tick - 1,
regs->rip);
jiffies += lost;
}
/*
......@@ -244,7 +304,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
* If we have an externally synchronized Linux clock, then update CMOS clock
* accordingly every ~11 minutes. set_rtc_mmss() will be called in the jiffy
* closest to exactly 500 ms before the next second. If the update fails, we
* don'tcare, as it'll be updated on the next turn, and the problem (time way
* don't care, as it'll be updated on the next turn, and the problem (time way
* off) isn't likely to go away much sooner anyway.
*/
......@@ -263,6 +323,7 @@ unsigned long get_cmos_time(void)
{
unsigned int timeout, year, mon, day, hour, min, sec;
unsigned char last, this;
unsigned long flags;
/*
* The Linux interpretation of the CMOS clock register contents: When the
......@@ -272,7 +333,7 @@ unsigned long get_cmos_time(void)
* standard 8.3 MHz ISA bus.
*/
spin_lock(&rtc_lock);
spin_lock_irqsave(&rtc_lock, flags);
timeout = 1000000;
last = this = 0;
......@@ -295,7 +356,7 @@ unsigned long get_cmos_time(void)
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
spin_unlock(&rtc_lock);
spin_unlock_irqrestore(&rtc_lock, flags);
/*
* We know that x86-64 always uses BCD format, no need to check the config
......@@ -326,6 +387,32 @@ unsigned long get_cmos_time(void)
#define TICK_COUNT 100000000
static unsigned int __init hpet_calibrate_tsc(void)
{
int tsc_start, hpet_start;
int tsc_now, hpet_now;
unsigned long flags;
local_irq_save(flags);
local_irq_disable();
hpet_start = hpet_readl(HPET_COUNTER);
rdtscl(tsc_start);
do {
local_irq_disable();
hpet_now = hpet_readl(HPET_COUNTER);
sync_core();
rdtscl(tsc_now);
local_irq_restore(flags);
} while ((tsc_now - tsc_start) < TICK_COUNT &&
(hpet_now - hpet_start) < TICK_COUNT);
return (tsc_now - tsc_start) * 1000000000L
/ ((hpet_now - hpet_start) * hpet_period / 1000);
}
/*
* pit_calibrate_tsc() uses the speaker output (channel 2) of
* the PIT. This is better than using the timer interrupt output,
......@@ -339,10 +426,9 @@ static unsigned int __init pit_calibrate_tsc(void)
unsigned long start, end;
unsigned long flags;
outb((inb(0x61) & ~0x02) | 0x01, 0x61);
spin_lock_irqsave(&i8253_lock, flags);
local_irq_save(flags);
local_irq_disable();
outb((inb(0x61) & ~0x02) | 0x01, 0x61);
outb(0xb0, 0x43);
outb((1193182 / (1000 / 50)) & 0xff, 0x42);
......@@ -353,42 +439,146 @@ static unsigned int __init pit_calibrate_tsc(void)
sync_core();
rdtscll(end);
local_irq_restore(flags);
spin_unlock_irqrestore(&i8253_lock, flags);
return (end - start) / 50;
}
static int hpet_init(void)
{
unsigned int cfg, id;
if (!vxtime.hpet_address)
return -1;
set_fixmap_nocache(FIX_HPET_BASE, vxtime.hpet_address);
/*
* Read the period, compute tick and quotient.
*/
id = hpet_readl(HPET_ID);
if (!(id & HPET_ID_VENDOR) || !(id & HPET_ID_NUMBER) ||
!(id & HPET_ID_LEGSUP))
return -1;
hpet_period = hpet_readl(HPET_PERIOD);
if (hpet_period < 100000 || hpet_period > 100000000)
return -1;
hpet_tick = (1000000000L * (USEC_PER_SEC / HZ) + hpet_period / 2) /
hpet_period;
/*
* Stop the timers and reset the main counter.
*/
cfg = hpet_readl(HPET_CFG);
cfg &= ~(HPET_CFG_ENABLE | HPET_CFG_LEGACY);
hpet_writel(cfg, HPET_CFG);
hpet_writel(0, HPET_COUNTER);
hpet_writel(0, HPET_COUNTER + 4);
/*
* Set up timer 0, as periodic with first interrupt to happen at hpet_tick,
* and period also hpet_tick.
*/
hpet_writel(HPET_T0_ENABLE | HPET_T0_PERIODIC | HPET_T0_SETVAL |
HPET_T0_32BIT, HPET_T0_CFG);
hpet_writel(hpet_tick, HPET_T0_CMP);
hpet_writel(hpet_tick, HPET_T0_CMP);
/*
* Go!
*/
cfg |= HPET_CFG_ENABLE | HPET_CFG_LEGACY;
hpet_writel(cfg, HPET_CFG);
return 0;
}
void __init pit_init(void)
{
unsigned long flags;
spin_lock_irqsave(&i8253_lock, flags);
outb_p(0x34, 0x43); /* binary, mode 2, LSB/MSB, ch 0 */
outb_p(LATCH & 0xff, 0x40); /* LSB */
outb_p(LATCH >> 8, 0x40); /* MSB */
spin_unlock_irqrestore(&i8253_lock, flags);
}
int __init time_setup(char *str)
{
hpet_report_lost_ticks = 1;
report_lost_ticks = 1;
return 1;
}
static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, 0, "timer", NULL, NULL};
static struct irqaction irq0 = {
timer_interrupt, SA_INTERRUPT, 0, "timer", NULL, NULL
};
extern void __init config_acpi_tables(void);
void __init time_init(void)
{
char *timename;
#ifdef HPET_HACK_ENABLE_DANGEROUS
if (!vxtime.hpet_address) {
printk(KERN_WARNING "time.c: WARNING: Enabling HPET base "
"manually!\n");
outl(0x800038a0, 0xcf8);
outl(0xff000001, 0xcfc);
outl(0x800038a0, 0xcf8);
hpet_address = inl(0xcfc) & 0xfffffffe;
printk(KERN_WARNING "time.c: WARNING: Enabled HPET "
"at %#lx.\n", hpet_address);
}
#endif
xtime.tv_sec = get_cmos_time();
xtime.tv_nsec = 0;
if (!hpet_init()) {
vxtime_hz = (1000000000000000L + hpet_period / 2) /
hpet_period;
cpu_khz = hpet_calibrate_tsc();
timename = "HPET";
} else {
pit_init();
printk(KERN_INFO "time.c: Using 1.1931816 MHz PIT timer.\n");
cpu_khz = pit_calibrate_tsc();
timename = "PIT";
}
printk(KERN_INFO "time.c: Using %ld.%06ld MHz %s timer.\n",
vxtime_hz / 1000000, vxtime_hz % 1000000, timename);
printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
hpet.ticks = cpu_khz * (1000 / HZ);
rdtscll(hpet.last_tsc);
vxtime.mode = VXTIME_TSC;
vxtime.quot = (1000000L << 32) / vxtime_hz;
vxtime.tsc_quot = (1000L << 32) / cpu_khz;
vxtime.hz = vxtime_hz;
rdtscll_sync(&vxtime.last_tsc);
setup_irq(0, &irq0);
}
void __init time_init_smp(void)
{
char *timetype;
if (vxtime.hpet_address) {
timetype = "HPET";
vxtime.last = hpet_readl(HPET_T0_CMP) - hpet_tick;
vxtime.mode = VXTIME_HPET;
do_gettimeoffset = do_gettimeoffset_hpet;
} else {
timetype = "PIT/TSC";
vxtime.mode = VXTIME_TSC;
}
printk(KERN_INFO "time.c: Using %s based timekeeping.\n", timetype);
}
__setup("report_lost_ticks", time_setup);
arch/x86_64/kernel/traps.c
View file @ d125dc40
......@@ -263,7 +263,7 @@ void show_registers(struct pt_regs *regs)
rsp = regs->rsp;
printk("CPU %d ", cpu);
show_regs(regs);
__show_regs(regs);
printk("Process %s (pid: %d, stackpage=%08lx)\n",
cur->comm, cur->pid, 4096+(unsigned long)cur);
......
arch/x86_64/kernel/vsyscall.c
View file @ d125dc40
......@@ -78,13 +78,21 @@ static force_inline void do_vgettimeofday(struct timeval * tv)
do {
sequence = read_seqbegin(&__xtime_lock);
sync_core();
rdtscll(t);
sec = __xtime.tv_sec;
usec = (__xtime.tv_nsec / 1000) +
(__jiffies - __wall_jiffies) * (1000000 / HZ) +
(t - __hpet.last_tsc) * (1000000 / HZ) / __hpet.ticks + __hpet.offset;
(__jiffies - __wall_jiffies) * (1000000 / HZ);
if (__vxtime.mode == VXTIME_TSC) {
sync_core();
rdtscll(t);
usec += ((t - __vxtime.last_tsc) *
__vxtime.tsc_quot) >> 32;
} else {
#if 0
usec += ((readl(fix_to_virt(VSYSCALL_HPET) + 0xf0) -
__vxtime.last) * __vxtime.quot) >> 32;
#endif
}
} while (read_seqretry(&__xtime_lock, sequence));
tv->tv_sec = sec + usec / 1000000;
......
arch/x86_64/lib/clear_page.S
View file @ d125dc40
/*
* Copyright 2002 Andi Kleen, SuSE Labs.
*/
#include <linux/linkage.h>
/*
* Zero a page.
* rdi page
*/
ENTRY(clear_page)
.globl clear_page
.p2align 4
clear_page:
xorl %eax,%eax
movl $4096/128,%ecx
movl $128,%edx
loop:
movl $4096/64,%ecx
.p2align 4
.Lloop:
decl %ecx
#define PUT(x) movq %rax,x*8(%rdi)
PUT(0)
movq %rax,(%rdi)
PUT(1)
PUT(2)
PUT(3)
......@@ -21,17 +20,8 @@ loop:
PUT(5)
PUT(6)
PUT(7)
PUT(8)
PUT(9)
PUT(10)
PUT(11)
PUT(12)
PUT(13)
PUT(14)
PUT(15)
addq %rdx,%rdi
decl %ecx
jnz loop
sfence
leaq 64(%rdi),%rdi
jnz .Lloop
nop
ret
arch/x86_64/lib/copy_page.S
View file @ d125dc40
/*
* Copyright 2002 Andi Kleen, SuSE Labs.
*/
/* Written 2003 by Andi Kleen, based on a kernel by Evandro Menezes */
#include <linux/linkage.h>
#include <linux/config.h>
#ifdef CONFIG_PREEMPT
#warning "check your fpu context saving!"
#endif
/* Don't use streaming store because it's better when the target
ends up in cache. */
/* Could vary the prefetch distance based on SMP/UP */
/*
* Copy a page.
*
* rdi destination page
* rsi source page
*
* src/dst must be aligned to 16 bytes.
*
* Warning: in case of super lazy FP save this needs to be preempt_stop
*/
.globl copy_page
.p2align
.p2align 4
copy_page:
prefetchnta (%rsi)
prefetchnta 64(%rsi)
movq %rsp,%rax
subq $16*4,%rsp
andq $~15,%rsp
movdqa %xmm0,(%rsp)
movdqa %xmm1,16(%rsp)
movdqa %xmm2,32(%rsp)
movdqa %xmm3,48(%rsp)
movl $(4096/128)-2,%ecx
movl $128,%edx
loop:
prefetchnta (%rsi)
prefetchnta 64(%rsi)
loop_no_prefetch:
movdqa (%rsi),%xmm0
movdqa 16(%rsi),%xmm1
movdqa 32(%rsi),%xmm2
movdqa 48(%rsi),%xmm3
movntdq %xmm0,(%rdi)
movntdq %xmm1,16(%rdi)
movntdq %xmm2,32(%rdi)
movntdq %xmm3,48(%rdi)
movdqa 64(%rsi),%xmm0
movdqa 80(%rsi),%xmm1
movdqa 96(%rsi),%xmm2
movdqa 112(%rsi),%xmm3
movntdq %xmm0,64(%rdi)
movntdq %xmm1,80(%rdi)
movntdq %xmm2,96(%rdi)
movntdq %xmm3,112(%rdi)
prefetch (%rsi)
prefetch 1*64(%rsi)
prefetch 2*64(%rsi)
prefetch 3*64(%rsi)
prefetch 4*64(%rsi)
prefetchw (%rdi)
prefetchw 1*64(%rdi)
prefetchw 2*64(%rdi)
prefetchw 3*64(%rdi)
prefetchw 4*64(%rdi)
subq $3*8,%rsp
movq %rbx,(%rsp)
movq %r12,1*8(%rsp)
movq %r13,2*8(%rsp)
movl $(4096/64)-5,%ecx
.p2align 4
.Loop64:
dec %rcx
movq (%rsi), %rax
movq 8 (%rsi), %rbx
movq 16 (%rsi), %rdx
movq 24 (%rsi), %r8
movq 32 (%rsi), %r9
movq 40 (%rsi), %r10
movq 48 (%rsi), %r11
movq 56 (%rsi), %r12
prefetch 5*64(%rsi)
movq %rax, (%rdi)
movq %rbx, 8 (%rdi)
movq %rdx, 16 (%rdi)
movq %r8, 24 (%rdi)
movq %r9, 32 (%rdi)
movq %r10, 40 (%rdi)
movq %r11, 48 (%rdi)
movq %r12, 56 (%rdi)
addq %rdx,%rdi
addq %rdx,%rsi
prefetchw 5*64(%rdi)
leaq 64 (%rsi), %rsi
leaq 64 (%rdi), %rdi
jnz .Loop64
movl $5,%ecx
.p2align 4
.Loop2:
decl %ecx
jns loop
cmpl $-1,%ecx
je loop_no_prefetch
sfence
movdqa (%rsp),%xmm0
movdqa 16(%rsp),%xmm1
movdqa 32(%rsp),%xmm2
movdqa 48(%rsp),%xmm3
movq %rax,%rsp
movq (%rsi), %rax
movq 8 (%rsi), %rbx
movq 16 (%rsi), %rdx
movq 24 (%rsi), %r8
movq 32 (%rsi), %r9
movq 40 (%rsi), %r10
movq 48 (%rsi), %r11
movq 56 (%rsi), %r12
movq %rax, (%rdi)
movq %rbx, 8 (%rdi)
movq %rdx, 16 (%rdi)
movq %r8, 24 (%rdi)
movq %r9, 32 (%rdi)
movq %r10, 40 (%rdi)
movq %r11, 48 (%rdi)
movq %r12, 56 (%rdi)
leaq 64(%rdi),%rdi
leaq 64(%rsi),%rsi
jnz .Loop2
movq (%rsp),%rbx
movq 1*8(%rsp),%r12
movq 2*8(%rsp),%r13
addq $3*8,%rsp
ret
arch/x86_64/lib/csum-copy.S
View file @ d125dc40
/*
* Copyright 2002 Andi Kleen
* Copyright 2002,2003 Andi Kleen, SuSE Labs.
*
* 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
......@@ -8,7 +8,6 @@
#include <linux/linkage.h>
#include <asm/errno.h>
// #define FIX_ALIGNMENT 1
/*
* Checksum copy with exception handling.
* On exceptions src_err_ptr or dst_err_ptr is set to -EFAULT and the
......@@ -26,17 +25,14 @@
* eax 64bit sum. undefined in case of exception.
*
* Wrappers need to take care of valid exception sum and zeroing.
* They also should align source or destination to 8 bytes.
*/
/* for now - should vary this based on direction */
#define prefetch prefetcht2
#define movnti movq
.macro source
10:
.section __ex_table,"a"
.align 8
.quad 10b,bad_source
.quad 10b,.Lbad_source
.previous
.endm
......@@ -44,57 +40,74 @@
20:
.section __ex_table,"a"
.align 8
.quad 20b,bad_dest
.quad 20b,.Lbad_dest
.previous
.endm
.macro ignore L=.Lignore
30:
.section __ex_table,"a"
.align 8
.quad 30b,\L
.previous
.endm
.globl csum_partial_copy_generic
.p2align
.p2align 4
csum_partial_copy_generic:
prefetchnta (%rdi)
cmpl $3*64,%edx
jle .Lignore
ignore
prefetch (%rdi)
ignore
prefetch 1*64(%rdi)
ignore
prefetch 2*64(%rdi)
ignore
prefetch 3*64(%rdi)
ignore
prefetch 4*64(%rdi)
ignore
prefetchw (%rsi)
ignore
prefetchw 1*64(%rsi)
ignore
prefetchw 2*64(%rsi)
ignore
prefetchw 3*64(%rsi)
ignore
prefetchw 4*64(%rsi)
.Lignore:
subq $7*8,%rsp
movq %rbx,2*8(%rsp)
movq %r12,3*8(%rsp)
movq %r14,4*8(%rsp)
movq %r13,5*8(%rsp)
movq %rbp,6*8(%rsp)
movq %r8,(%rsp)
movq %r9,1*8(%rsp)
pushq %rbx
pushq %r12
pushq %r14
pushq %r15
movq %r8,%r14
movq %r9,%r15
movl %ecx,%eax
movl %edx,%ecx
#ifdef FIX_ALIGNMENT
/* align source to 8 bytes */
movl %edi,%r8d
andl $7,%r8d
jnz bad_alignment
after_bad_alignment:
#endif
movl $64,%r10d
xorl %r9d,%r9d
movq %rcx,%r12
shrq $6,%r12
/* loopcounter is maintained as one less to test efficiently for the
previous to last iteration. This is needed to stop the prefetching. */
decq %r12
js handle_tail /* < 64 */
jz loop_no_prefetch /* = 64 + X */
jz .Lhandle_tail /* < 64 */
clc
/* main loop. clear in 64 byte blocks */
/* tries hard not to prefetch over the boundary */
/* r10: 64, r9: zero, r8: temp2, rbx: temp1, rax: sum, rcx: saved length */
/* r9: zero, r8: temp2, rbx: temp1, rax: sum, rcx: saved length */
/* r11: temp3, rdx: temp4, r12 loopcnt */
.p2align
loop:
/* Could prefetch more than one loop, but then it would be even
trickier to avoid prefetching over the boundary. The hardware prefetch
should take care of this anyways. The reason for this prefetch is
just the non temporal hint to avoid cache pollution. Hopefully this
will be handled properly by the hardware. */
prefetchnta 64(%rdi)
loop_no_prefetch:
/* r10: temp5, rbp: temp6, r14 temp7, r13 temp8 */
.p2align 4
.Lloop:
source
movq (%rdi),%rbx
source
......@@ -104,175 +117,136 @@ loop_no_prefetch:
source
movq 24(%rdi),%rdx
dest
movnti %rbx,(%rsi)
dest
movnti %r8,8(%rsi)
dest
movnti %r11,16(%rsi)
dest
movnti %rdx,24(%rsi)
source
movq 32(%rdi),%r10
source
movq 40(%rdi),%rbp
source
movq 48(%rdi),%r14
source
movq 56(%rdi),%r13
addq %rbx,%rax
ignore 2f
prefetch 5*64(%rdi)
2:
adcq %rbx,%rax
adcq %r8,%rax
adcq %r11,%rax
adcq %rdx,%rax
adcq %r10,%rax
adcq %rbp,%rax
adcq %r14,%rax
adcq %r13,%rax
source
movq 32(%rdi),%rbx
source
movq 40(%rdi),%r8
source
movq 48(%rdi),%r11
source
movq 56(%rdi),%rdx
decl %r12d
dest
movnti %rbx,32(%rsi)
movq %rbx,(%rsi)
dest
movnti %r8,40(%rsi)
movq %r8,8(%rsi)
dest
movnti %r11,48(%rsi)
movq %r11,16(%rsi)
dest
movnti %rdx,56(%rsi)
movq %rdx,24(%rsi)
adcq %rbx,%rax
adcq %r8,%rax
adcq %r11,%rax
adcq %rdx,%rax
dest
movq %r10,32(%rsi)
dest
movq %rbp,40(%rsi)
dest
movq %r14,48(%rsi)
dest
movq %r13,56(%rsi)
adcq %r9,%rax /* add in carry */
ignore 3f
prefetchw 5*64(%rsi)
3:
addq %r10,%rdi
addq %r10,%rsi
leaq 64(%rdi),%rdi
leaq 64(%rsi),%rsi
decq %r12
jz loop_no_prefetch /* previous to last iteration? */
jns loop
jnz .Lloop
adcq %r9,%rax
/* do last upto 56 bytes */
handle_tail:
.Lhandle_tail:
/* ecx: count */
movl %ecx,%r10d
andl $63,%ecx
shrl $3,%ecx
jz fold
jz .Lfold
clc
movl $8,%edx
loop_8:
.p2align 4
.Lloop_8:
source
movq (%rdi),%rbx
adcq %rbx,%rax
dest
movnti %rbx,(%rsi)
leaq (%rsi,%rdx),%rsi /* preserve carry */
leaq (%rdi,%rdx),%rdi
decl %ecx
jnz loop_8
dest
movq %rbx,(%rsi)
leaq 8(%rsi),%rsi /* preserve carry */
leaq 8(%rdi),%rdi
jnz .Lloop_8
adcq %r9,%rax /* add in carry */
fold:
.Lfold:
/* reduce checksum to 32bits */
movl %eax,%ebx
shrq $32,%rax
addq %rbx,%rax
addl %ebx,%eax
adcl %r9d,%eax
/* do last upto 6 bytes */
handle_7:
.Lhandle_7:
movl %r10d,%ecx
andl $7,%ecx
shrl $1,%ecx
jz handle_1
jz .Lhandle_1
movl $2,%edx
xorl %ebx,%ebx
clc
loop_1:
.p2align 4
.Lloop_1:
source
movw (%rdi),%bx
adcq %rbx,%rax
adcl %ebx,%eax
dest
movw %bx,(%rsi)
addq %rdx,%rdi
addq %rdx,%rsi
decl %ecx
jnz loop_1
adcw %r9w,%ax /* add in carry */
movw %bx,(%rsi)
leaq 2(%rdi),%rdi
leaq 2(%rsi),%rsi
jnz .Lloop_1
adcl %r9d,%eax /* add in carry */
/* handle last odd byte */
handle_1:
.Lhandle_1:
testl $1,%r10d
jz ende
jz .Lende
xorl %ebx,%ebx
source
movb (%rdi),%bl
dest
movb %bl,(%rsi)
addw %bx,%ax
adcw %r9w,%ax /* carry */
addl %ebx,%eax
adcl %r9d,%eax /* carry */
ende:
sfence
popq %r15
popq %r14
popq %r12
popq %rbx
.Lende:
movq 2*8(%rsp),%rbx
movq 3*8(%rsp),%r12
movq 4*8(%rsp),%r14
movq 5*8(%rsp),%r13
movq 6*8(%rsp),%rbp
addq $7*8,%rsp
ret
#ifdef FIX_ALIGNMENT
/* align source to 8 bytes. */
/* r8d: unalignedness, ecx len */
bad_alignment:
testl $1,%edi
jnz odd_source
/* compute distance to next aligned position */
movl $8,%r8d
xchgl %r8d,%ecx
subl %r8d,%ecx
/* handle unaligned part */
shrl $1,%ecx
xorl %ebx,%ebx
movl $2,%r10d
align_loop:
source
movw (%rdi),%bx
addq %rbx,%rax /* carry cannot happen */
dest
movw %bx,(%rsi)
addq %r10,%rdi
addq %r10,%rsi
decl %ecx
jnz align_loop
jmp after_bad_alignment
/* weird case. need to swap the sum at the end because the spec requires
16 bit words of the sum to be always paired.
handle it recursively because it should be rather rare. */
odd_source:
/* copy odd byte */
xorl %ebx,%ebx
source
movb (%rdi),%bl
addl %ebx,%eax /* add to old checksum */
adcl $0,%ecx
dest
movb %al,(%rsi)
/* fix arguments */
movl %eax,%ecx
incq %rsi
incq %rdi
decq %rdx
call csum_partial_copy_generic
bswap %eax /* this should work, but check */
jmp ende
#endif
/* Exception handlers. Very simple, zeroing is done in the wrappers */
bad_source:
movl $-EFAULT,(%r14)
jmp ende
.Lbad_source:
movq (%rsp),%rax
movl $-EFAULT,(%rax)
jmp .Lende
bad_dest:
movl $-EFAULT,(%r15)
jmp ende
.Lbad_dest:
movq 8(%rsp),%rax
movl $-EFAULT,(%rax)
jmp .Lende
arch/x86_64/lib/csum-partial.c
View file @ d125dc40
......@@ -7,35 +7,39 @@
#include <linux/compiler.h>
#include <linux/module.h>
#include <asm/checksum.h>
/* Better way for this sought */
static inline unsigned short from64to16(unsigned long x)
#define __force_inline inline __attribute__((always_inline))
static inline unsigned short from32to16(unsigned a)
{
/* add up 32-bit words for 33 bits */
x = (x & 0xffffffff) + (x >> 32);
/* add up 16-bit and 17-bit words for 17+c bits */
x = (x & 0xffff) + (x >> 16);
/* add up 16-bit and 2-bit for 16+c bit */
x = (x & 0xffff) + (x >> 16);
/* add up carry.. */
x = (x & 0xffff) + (x >> 16);
return x;
unsigned short b = a >> 16;
asm("addw %w2,%w0\n\t"
"adcw $0,%w0\n"
: "=r" (b)
: "0" (b), "r" (a));
return b;
}
/*
* Do a 64-bit checksum on an arbitrary memory area.
* Returns a 32bit checksum.
*
* This isn't a great routine, but it's not _horrible_ either.
* We rely on the compiler to unroll.
* This isn't as time critical as it used to be because many NICs
* do hardware checksumming these days.
*
* Things tried and found to not make it faster:
* Manual Prefetching
* Unrolling to an 128 bytes inner loop.
* Using interleaving with more registers to break the carry chains.
*/
static inline unsigned do_csum(const unsigned char * buff, int len)
static __force_inline unsigned do_csum(const unsigned char *buff, unsigned len)
{
int odd, count;
unsigned odd, count;
unsigned long result = 0;
if (len <= 0)
goto out;
if (unlikely(len == 0))
return result;
odd = 1 & (unsigned long) buff;
if (unlikely(odd)) {
result = *buff << 8;
......@@ -45,7 +49,7 @@ static inline unsigned do_csum(const unsigned char * buff, int len)
count = len >> 1; /* nr of 16-bit words.. */
if (count) {
if (2 & (unsigned long) buff) {
result += *(unsigned short *) buff;
result += *(unsigned short *)buff;
count--;
len -= 2;
buff += 2;
......@@ -59,18 +63,41 @@ static inline unsigned do_csum(const unsigned char * buff, int len)
buff += 4;
}
count >>= 1; /* nr of 64-bit words.. */
if (count) {
/* main loop using 64byte blocks */
unsigned long zero = 0;
do {
asm(" addq %1,%0\n"
" adcq %2,%0\n"
unsigned count64 = count >> 3;
while (count64) {
asm("addq 0*8(%[src]),%[res]\n\t"
"adcq 1*8(%[src]),%[res]\n\t"
"adcq 2*8(%[src]),%[res]\n\t"
"adcq 3*8(%[src]),%[res]\n\t"
"adcq 4*8(%[src]),%[res]\n\t"
"adcq 5*8(%[src]),%[res]\n\t"
"adcq 6*8(%[src]),%[res]\n\t"
"adcq 7*8(%[src]),%[res]\n\t"
"adcq %[zero],%[res]"
: [res] "=r" (result)
: [src] "r" (buff), [zero] "r" (zero),
"[res]" (result));
buff += 64;
count64--;
}
/* last upto 7 8byte blocks */
count %= 8;
while (count) {
asm("addq %1,%0\n\t"
"adcq %2,%0\n"
: "=r" (result)
: "m" (*buff), "r" (zero), "0" (result));
count--;
: "m" (*(unsigned long *)buff),
"r" (zero), "0" (result));
--count;
buff += 8;
} while (count);
result = (result & 0xffffffff) + (result >> 32);
}
result = add32_with_carry(result>>32,
result&0xffffffff);
if (len & 4) {
result += *(unsigned int *) buff;
buff += 4;
......@@ -83,10 +110,11 @@ static inline unsigned do_csum(const unsigned char * buff, int len)
}
if (len & 1)
result += *buff;
result = from64to16(result);
if (unlikely(odd))
return ((result >> 8) & 0xff) | ((result & 0xff) << 8);
out:
result = add32_with_carry(result>>32, result & 0xffffffff);
if (unlikely(odd)) {
result = from32to16(result);
result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
}
return result;
}
......@@ -102,18 +130,11 @@ static inline unsigned do_csum(const unsigned char * buff, int len)
*
* it's best to have buff aligned on a 64-bit boundary
*/
unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
unsigned csum_partial(const unsigned char *buff, unsigned len, unsigned sum)
{
unsigned result = do_csum(buff, len);
/* add in old sum, and carry.. */
asm("addl %1,%0\n\t"
"adcl $0,%0" : "=r" (result) : "r" (sum), "0" (result));
return result;
return add32_with_carry(do_csum(buff, len), sum);
}
//EXPORT_SYMBOL(csum_partial);
/*
* this routine is used for miscellaneous IP-like checksums, mainly
* in icmp.c
......@@ -123,4 +144,3 @@ unsigned short ip_compute_csum(unsigned char * buff, int len)
return ~csum_partial(buff,len,0);
}
EXPORT_SYMBOL(ip_compute_csum);
arch/x86_64/lib/csum-wrappers.c
View file @ d125dc40
/* Copyright 2002 Andi Kleen, SuSE Labs.
/* Copyright 2002,2003 Andi Kleen, SuSE Labs.
* Subject to the GNU Public License v.2
*
* Wrappers of assembly checksum functions for x86-64.
......@@ -7,18 +7,6 @@
#include <asm/checksum.h>
#include <linux/module.h>
/* Better way for this sought */
static inline unsigned from64to32(unsigned long x)
{
/* add up 32-bit words for 33 bits */
x = (x & 0xffffffff) + (x >> 32);
/* add up 16-bit and 17-bit words for 17+c bits */
x = (x & 0xffff) + (x >> 16);
/* add up 16-bit and 2-bit for 16+c bit */
x = (x & 0xffff) + (x >> 16);
return x;
}
/**
* csum_partial_copy_from_user - Copy and checksum from user space.
* @src: source address (user space)
......@@ -36,14 +24,32 @@ csum_partial_copy_from_user(const char *src, char *dst,
{
*errp = 0;
if (likely(access_ok(VERIFY_READ,src, len))) {
unsigned long sum;
sum = csum_partial_copy_generic(src,dst,len,isum,errp,NULL);
/* Why 6, not 7? To handle odd addresses aligned we
would need to do considerable complications to fix the
checksum which is defined as an 16bit accumulator. The
fix alignment code is primarily for performance
compatibility with 32bit and that will handle odd
addresses slowly too. */
if (unlikely((unsigned long)src & 6)) {
while (((unsigned long)src & 6) && len >= 2) {
__u16 val16;
*errp = __get_user(val16, (__u16 *)src);
if (*errp)
return isum;
*(__u16 *)dst = val16;
isum = add32_with_carry(isum, val16);
src += 2;
dst += 2;
len -= 2;
}
}
isum = csum_partial_copy_generic(src,dst,len,isum,errp,NULL);
if (likely(*errp == 0))
return from64to32(sum);
return isum;
}
*errp = -EFAULT;
memset(dst,0,len);
return 0;
return isum;
}
EXPORT_SYMBOL(csum_partial_copy_from_user);
......@@ -67,8 +73,22 @@ csum_partial_copy_to_user(const char *src, char *dst,
*errp = -EFAULT;
return 0;
}
if (unlikely((unsigned long)dst & 6)) {
while (((unsigned long)dst & 6) && len >= 2) {
__u16 val16 = *(__u16 *)src;
isum = add32_with_carry(isum, val16);
*errp = __put_user(val16, (__u16 *)dst);
if (*errp)
return isum;
src += 2;
dst += 2;
len -= 2;
}
}
*errp = 0;
return from64to32(csum_partial_copy_generic(src,dst,len,isum,NULL,errp));
return csum_partial_copy_generic(src,dst,len,isum,NULL,errp);
}
EXPORT_SYMBOL(csum_partial_copy_to_user);
......@@ -85,11 +105,9 @@ EXPORT_SYMBOL(csum_partial_copy_to_user);
unsigned int
csum_partial_copy_nocheck(const char *src, char *dst, int len, unsigned int sum)
{
return from64to32(csum_partial_copy_generic(src,dst,len,sum,NULL,NULL));
return csum_partial_copy_generic(src,dst,len,sum,NULL,NULL);
}
//EXPORT_SYMBOL(csum_partial_copy_nocheck);
unsigned short csum_ipv6_magic(struct in6_addr *saddr, struct in6_addr *daddr,
__u32 len, unsigned short proto, unsigned int sum)
{
......@@ -103,7 +121,7 @@ unsigned short csum_ipv6_magic(struct in6_addr *saddr, struct in6_addr *daddr,
" adcq $0,%[sum]\n"
: [sum] "=r" (sum64)
: "[sum]" (rest),[saddr] "r" (saddr), [daddr] "r" (daddr));
return csum_fold(from64to32(sum64));
return csum_fold(add32_with_carry(sum64 & 0xffffffff, sum64>>32));
}
EXPORT_SYMBOL(csum_ipv6_magic);
arch/x86_64/lib/memcpy.S
View file @ d125dc40
......@@ -12,103 +12,78 @@
* rax original destination
*/
// #define FIX_ALIGNMENT
.globl __memcpy
.globl memcpy
.p2align
.p2align 4
__memcpy:
memcpy:
pushq %rbx
movq %rdi,%rax
#ifdef FIX_ALIGNMENT
movl %edi,%ecx
andl $7,%ecx
jnz bad_alignment
after_bad_alignment:
#endif
movq %rdx,%rcx
movl $64,%ebx
shrq $6,%rcx
jz handle_tail
movl %edx,%ecx
shrl $6,%ecx
jz .Lhandle_tail
.p2align 4
.Lloop_64:
decl %ecx
loop_64:
movq (%rsi),%r11
movq 8(%rsi),%r8
movq 2*8(%rsi),%r9
movq 3*8(%rsi),%r10
movq %r11,(%rdi)
movq %r8,1*8(%rdi)
movq 2*8(%rsi),%r9
movq 3*8(%rsi),%r10
movq %r9,2*8(%rdi)
movq %r10,3*8(%rdi)
movq 4*8(%rsi),%r11
movq 5*8(%rsi),%r8
movq 6*8(%rsi),%r9
movq 7*8(%rsi),%r10
movq %r11,4*8(%rdi)
movq %r8,5*8(%rdi)
movq 6*8(%rsi),%r9
movq 7*8(%rsi),%r10
movq %r9,6*8(%rdi)
movq %r10,7*8(%rdi)
addq %rbx,%rsi
addq %rbx,%rdi
decl %ecx
jnz loop_64
leaq 64(%rsi),%rsi
leaq 64(%rdi),%rdi
jnz .Lloop_64
handle_tail:
.Lhandle_tail:
movl %edx,%ecx
andl $63,%ecx
shrl $3,%ecx
jz handle_7
movl $8,%ebx
loop_8:
jz .Lhandle_7
.p2align 4
.Lloop_8:
decl %ecx
movq (%rsi),%r8
movq %r8,(%rdi)
addq %rbx,%rdi
addq %rbx,%rsi
decl %ecx
jnz loop_8
leaq 8(%rdi),%rdi
leaq 8(%rsi),%rsi
jnz .Lloop_8
handle_7:
.Lhandle_7:
movl %edx,%ecx
andl $7,%ecx
jz ende
loop_1:
jz .Lende
.p2align 4
.Lloop_1:
movb (%rsi),%r8b
movb %r8b,(%rdi)
incq %rdi
incq %rsi
decl %ecx
jnz loop_1
jnz .Lloop_1
ende:
sfence
.Lende:
popq %rbx
ret
#ifdef FIX_ALIGNMENT
/* align destination */
/* This is simpleminded. For bigger blocks it may make sense to align
src and dst to their aligned subset and handle the rest separately */
bad_alignment:
movl $8,%r9d
subl %ecx,%r9d
movl %r9d,%ecx
subq %r9,%rdx
js small_alignment
jz small_alignment
align_1:
movb (%rsi),%r8b
movb %r8b,(%rdi)
incq %rdi
incq %rsi
decl %ecx
jnz align_1
jmp after_bad_alignment
small_alignment:
addq %r9,%rdx
jmp handle_7
#endif
arch/x86_64/lib/memset.S
View file @ d125dc40
......@@ -11,7 +11,7 @@
*/
.globl __memset
.globl memset
.p2align
.p2align 4
memset:
__memset:
movq %rdi,%r10
......@@ -25,15 +25,16 @@ __memset:
/* align dst */
movl %edi,%r9d
andl $7,%r9d
jnz bad_alignment
after_bad_alignment:
jnz .Lbad_alignment
.Lafter_bad_alignment:
movq %r11,%rcx
movl $64,%r8d
shrq $6,%rcx
jz handle_tail
movl %r11d,%ecx
shrl $6,%ecx
jz .Lhandle_tail
loop_64:
.p2align 4
.Lloop_64:
decl %ecx
movq %rax,(%rdi)
movq %rax,8(%rdi)
movq %rax,16(%rdi)
......@@ -42,43 +43,45 @@ loop_64:
movq %rax,40(%rdi)
movq %rax,48(%rdi)
movq %rax,56(%rdi)
addq %r8,%rdi
decl %ecx
jnz loop_64
leaq 64(%rdi),%rdi
jnz .Lloop_64
/* Handle tail in loops. The loops should be faster than hard
to predict jump tables. */
handle_tail:
.p2align 4
.Lhandle_tail:
movl %r11d,%ecx
andl $63&(~7),%ecx
jz handle_7
jz .Lhandle_7
shrl $3,%ecx
loop_8:
movq %rax,(%rdi)
addq $8,%rdi
.p2align 4
.Lloop_8:
decl %ecx
jnz loop_8
movq %rax,(%rdi)
leaq 8(%rdi),%rdi
jnz .Lloop_8
handle_7:
.Lhandle_7:
movl %r11d,%ecx
andl $7,%ecx
jz ende
loop_1:
movb %al,(%rdi)
addq $1,%rdi
jz .Lende
.p2align 4
.Lloop_1:
decl %ecx
jnz loop_1
movb %al,(%rdi)
leaq 1(%rdi),%rdi
jnz .Lloop_1
ende:
.Lende:
movq %r10,%rax
ret
bad_alignment:
.Lbad_alignment:
cmpq $7,%r11
jbe handle_7
jbe .Lhandle_7
movq %rax,(%rdi) /* unaligned store */
movq $8,%r8
subq %r9,%r8
addq %r8,%rdi
subq %r8,%r11
jmp after_bad_alignment
jmp .Lafter_bad_alignment
arch/x86_64/vmlinux.lds.S
View file @ d125dc40
......@@ -50,10 +50,10 @@ SECTIONS
.xtime_lock : AT ((LOADADDR(.vsyscall_0) + SIZEOF(.vsyscall_0) + 63) & ~(63)) { *(.xtime_lock) }
xtime_lock = LOADADDR(.xtime_lock);
. = ALIGN(16);
.hpet : AT ((LOADADDR(.xtime_lock) + SIZEOF(.xtime_lock) + 15) & ~(15)) { *(.hpet) }
hpet = LOADADDR(.hpet);
.vxtime : AT ((LOADADDR(.xtime_lock) + SIZEOF(.xtime_lock) + 15) & ~(15)) { *(.vxtime) }
vxtime = LOADADDR(.vxtime);
. = ALIGN(16);
.wall_jiffies : AT ((LOADADDR(.hpet) + SIZEOF(.hpet) + 15) & ~(15)) { *(.wall_jiffies) }
.wall_jiffies : AT ((LOADADDR(.vxtime) + SIZEOF(.vxtime) + 15) & ~(15)) { *(.wall_jiffies) }
wall_jiffies = LOADADDR(.wall_jiffies);
. = ALIGN(16);
.sys_tz : AT ((LOADADDR(.wall_jiffies) + SIZEOF(.wall_jiffies) + 15) & ~(15)) { *(.sys_tz) }
......@@ -105,6 +105,7 @@ SECTIONS
__con_initcall_start = .;
.con_initcall.init : { *(.con_initcall.init) }
__con_initcall_end = .;
SECURITY_INIT
. = ALIGN(4096);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
......
drivers/char/rocket.c
View file @ d125dc40
......@@ -40,23 +40,12 @@
*/
/****** Defines ******/
#include <linux/config.h>
#include <linux/version.h>
#ifdef PCI_NUM_RESOURCES
#define PCI_BASE_ADDRESS(dev, r) ((dev)->resource[r].start)
#else
#define PCI_BASE_ADDRESS(dev, r) ((dev)->base_address[r])
#endif
#ifndef VERSION_CODE
# define VERSION_CODE(vers,rel,seq) ( ((vers)<<16) | ((rel)<<8) | (seq) )
#endif
#if LINUX_VERSION_CODE < VERSION_CODE(2,2,9) /* No version < 2.2 */
# error "This kernel is too old: not supported by this file"
#endif
#define ROCKET_PARANOIA_CHECK
#define ROCKET_DISABLE_SIMUSAGE
......@@ -72,45 +61,12 @@
#undef REV_PCI_ORDER
#undef ROCKET_DEBUG_IO
/* CAUTION!!!!! The TIME_STAT Function relies on the Pentium 64 bit
* register. For various reasons related to 1.2.13, the test for this
* register is omitted from this driver. If you are going to enable
* this option, make sure you are running a Pentium CPU and that a
* cat of /proc/cpuinfo shows ability TS Counters as Yes. Warning part
* done, don't cry to me if you enable this options and things won't
* work. If it gives you any problems, then disable the option. The code
* in this function is pretty straight forward, if it breaks on your
* CPU, there is probably something funny about your CPU.
*/
#undef TIME_STAT /* For performing timing statistics on driver. */
/* Produces printks, one every TIME_COUNTER loops, eats */
/* some of your CPU time. Good for testing or */
/* other checking, otherwise, leave it undefed */
/* Doug Ledford */
#define TIME_STAT_CPU 100 /* This needs to be set to your processor speed */
/* For example, 100Mhz CPU, set this to 100 */
#define TIME_COUNTER 180000 /* This is how many iterations to run before */
/* performing the printk statements. */
/* 6000 = 1 minute, 360000 = 1 hour, etc. */
/* Since time_stat is long long, this */
/* Can be really high if you want :) */
#undef TIME_STAT_VERBOSE /* Undef this if you want a terse log message. */
#if LINUX_VERSION_CODE < VERSION_CODE(2,4,0)
#define TTY_DRIVER_NO_DEVFS 0
#endif
#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
/****** Kernel includes ******/
#ifdef MODVERSIONS
#if LINUX_VERSION_CODE < VERSION_CODE(2,5,00)
#include <linux/modversions.h>
#else
#include <config/modversions.h>
#endif
#endif
#include <linux/module.h>
......@@ -118,13 +74,7 @@
#include <linux/major.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#if LINUX_VERSION_CODE < VERSION_CODE(2,4,0)
#include <linux/malloc.h>
#else
#include <linux/slab.h>
#endif
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/timer.h>
......@@ -153,20 +103,8 @@
#include "rocket_int.h"
#include "rocket.h"
#ifdef LOCAL_ROCKET_H
#include "version.h"
#else
#define ROCKET_VERSION "2.08"
#define ROCKET_DATE "02-June-2003"
#endif /* LOCAL_ROCKET_H */
/*
* All of the compatibilty code so we can compile serial.c against
* older kernels is hidden in rocket_compat.h
*/
#if defined(LOCAL_ROCKET_H) || (LINUX_VERSION_CODE < VERSION_CODE(2,3,23))
#include "rocket_compat.h"
#endif
#define ROCKET_VERSION "2.09"
#define ROCKET_DATE "12-June-2003"
/****** RocketPort Local Variables ******/
......@@ -205,13 +143,6 @@ static int is_PCI[NUM_BOARDS];
static rocketModel_t rocketModel[NUM_BOARDS];
static int max_board;
#ifdef TIME_STAT
static unsigned long long time_stat;
static unsigned long time_stat_short;
static unsigned long time_stat_long;
static unsigned long time_counter;
#endif
/*
* The following arrays define the interrupt bits corresponding to each AIOP.
* These bits are different between the ISA and regular PCI boards and the
......@@ -241,7 +172,7 @@ static unsigned char lineNumbers[MAX_RP_PORTS];
static unsigned long nextLineNumber;
/***** RocketPort Static Prototypes *********/
static int __init init_ISA(int i, int *reserved_controller);
static int __init init_ISA(int i);
static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
static void rp_flush_buffer(struct tty_struct *tty);
static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
......@@ -564,16 +495,6 @@ static void rp_do_poll(unsigned long dummy)
unsigned char AiopMask;
Word_t bit;
#ifdef TIME_STAT
unsigned long low = 0, high = 0, loop_time;
unsigned long long time_stat_tmp = 0, time_stat_tmp2 = 0;
__asm__(".byte 0x0f,0x31":"=a"(low), "=d"(high));
time_stat_tmp = high;
time_stat_tmp <<= 32;
time_stat_tmp += low;
#endif /* TIME_STAT */
/* Walk through all the boards (ctrl's) */
for (ctrl = 0; ctrl < max_board; ctrl++) {
if (rcktpt_io_addr[ctrl] <= 0)
......@@ -635,48 +556,6 @@ static void rp_do_poll(unsigned long dummy)
*/
if (atomic_read(&rp_num_ports_open))
mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
#ifdef TIME_STAT
__asm__(".byte 0x0f,0x31":"=a"(low), "=d"(high));
time_stat_tmp2 = high;
time_stat_tmp2 <<= 32;
time_stat_tmp2 += low;
time_stat_tmp2 -= time_stat_tmp;
time_stat += time_stat_tmp2;
if (time_counter == 0)
time_stat_short = time_stat_long = time_stat_tmp2;
else {
if (time_stat_tmp2 < time_stat_short)
time_stat_short = time_stat_tmp2;
else if (time_stat_tmp2 > time_stat_long)
time_stat_long = time_stat_tmp2;
}
if (++time_counter == TIME_COUNTER) {
loop_time =
(unsigned
long) (((unsigned long) (time_stat >> 32) *
((unsigned long) (0xffffffff) /
(TIME_STAT_CPU * TIME_COUNTER))) +
((unsigned long) time_stat /
(TIME_STAT_CPU * TIME_COUNTER)));
#ifdef TIME_STAT_VERBOSE
printk(KERN_INFO "rp_do_poll: Interrupt Timings\n");
printk(KERN_INFO " %5ld iterations; %ld us min,\n",
(long) TIME_COUNTER,
(time_stat_short / TIME_STAT_CPU));
printk(KERN_INFO " %5ld us max, %ld us average per iteration.\n",
(time_stat_long / TIME_STAT_CPU), loop_time);
printk(KERN_INFO "We want to use < 5,000 us for an iteration.\n");
#else /* TIME_STAT_VERBOSE */
printk(KERN_INFO "rp: %ld loops: %ld min, %ld max, %ld us/loop.\n",
(long) TIME_COUNTER,
(time_stat_short / TIME_STAT_CPU),
(time_stat_long / TIME_STAT_CPU), loop_time);
#endif /* TIME_STAT_VERBOSE */
time_counter = time_stat = 0;
time_stat_short = time_stat_long = 0;
}
#endif /* TIME_STAT */
}
/*
......@@ -762,10 +641,8 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
spin_lock_init(&info->slock);
sema_init(&info->write_sem, 1);
rp_table[line] = info;
#if LINUX_VERSION_CODE > VERSION_CODE(2,5,0)
if (pci_dev)
tty_register_device(rocket_driver, line, &pci_dev->dev);
#endif
}
/*
......@@ -1039,12 +916,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
CHANNEL_t *cp;
unsigned long page;
#if LINUX_VERSION_CODE > VERSION_CODE(2,5,0)
line = TTY_GET_LINE(tty);
#else
line = MINOR(tty->device) - TTY_DRIVER_MINOR_START(tty);
#endif
if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
return -ENXIO;
......@@ -1070,9 +942,6 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
info->tty = tty;
if (info->count++ == 0) {
#if ((LINUX_VERSION_CODE < VERSION_CODE(2,5,0)) && defined(MODULE))
MOD_INC_USE_COUNT;
#endif
atomic_inc(&rp_num_ports_open);
#ifdef ROCKET_DEBUG_OPEN
......@@ -1254,10 +1123,6 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
tty->closing = 0;
wake_up_interruptible(&info->close_wait);
#if ((LINUX_VERSION_CODE < VERSION_CODE(2,5,0)) && defined(MODULE))
MOD_DEC_USE_COUNT;
#endif
atomic_dec(&rp_num_ports_open);
#ifdef ROCKET_DEBUG_OPEN
......@@ -1406,8 +1271,6 @@ static int set_modem_info(struct r_port *info, unsigned int cmd,
return 0;
}
#if LINUX_VERSION_CODE > VERSION_CODE(2,5,0)
/*
* Returns the state of the serial modem control lines. These next 2 functions
* are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
......@@ -1450,8 +1313,6 @@ static int rp_tiocmset(struct tty_struct *tty, struct file *file,
return 0;
}
#endif /* Linux > 2.5 */
static int get_config(struct r_port *info, struct rocket_config *retinfo)
{
struct rocket_config tmp;
......@@ -1781,12 +1642,8 @@ static void rp_hangup(struct tty_struct *tty)
rp_flush_buffer(tty);
if (info->flags & ROCKET_CLOSING)
return;
if (info->count) {
#if ((LINUX_VERSION_CODE < VERSION_CODE(2,5,0)) && defined(MODULE))
MOD_DEC_USE_COUNT;
#endif
if (info->count)
atomic_dec(&rp_num_ports_open);
}
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
info->count = 0;
......@@ -2344,17 +2201,9 @@ __init int register_PCI(int i, struct pci_dev *dev)
for (aiop = 0; aiop < max_num_aiops; aiop++)
ctlp->AiopNumChan[aiop] = ports_per_aiop;
#if LINUX_VERSION_CODE < VERSION_CODE(2,3,99)
printk(KERN_INFO "Comtrol PCI controller #%d ID 0x%x found at 0x%lx, "
"%d AIOP(s) (%s)\n", i, dev->device, rcktpt_io_addr[i],
num_aiops, rocketModel[i].modelString);
#else
printk
("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
"%d AIOP(s) (%s)\n", i, dev->device, dev->slot_name,
rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
#endif
printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
rocketModel[i].modelString,
rocketModel[i].startingPortNumber,
......@@ -2391,9 +2240,6 @@ __init int register_PCI(int i, struct pci_dev *dev)
return (1);
}
#if LINUX_VERSION_CODE > VERSION_CODE(2,3,99) /* Linux version 2.4 and greater */
/*
* Probes for PCI cards, inits them if found
* Input: board_found = number of ISA boards already found, or the
......@@ -2413,51 +2259,6 @@ static int __init init_PCI(int boards_found)
return (count);
}
#else /* Linux version 2.2 */
/*
* Linux 2.2 pci_find_device() does not allow a search of all devices for a certain vendor,
* you have to try each device ID. Comtrol device ID's are 0x0000 -0x000F for the original
* boards. Newer board are 0x08xx (see upci_ids[]).
*/
static int __init init_PCI(int boards_found)
{
int j, count = 0;
struct pci_dev *dev = NULL;
static int upci_ids[] = {
PCI_DEVICE_ID_URP32INTF,
PCI_DEVICE_ID_URP8INTF,
PCI_DEVICE_ID_URP16INTF,
PCI_DEVICE_ID_CRP16INTF,
PCI_DEVICE_ID_URP8OCTA,
PCI_DEVICE_ID_UPCI_RM3_8PORT,
PCI_DEVICE_ID_UPCI_RM3_4PORT
};
#define NUM_UPCI_IDS (sizeof(upci_ids) / sizeof(upci_ids[0]))
/* Try finding devices with PCI ID's 0x0000 - 0x000F */
for (j = 0; j < 16; j++) {
while ((dev = pci_find_device(PCI_VENDOR_ID_RP, j, dev))) {
register_PCI(count + boards_found, dev);
count++;
}
}
/* Now try finding the UPCI devices, which have PCI ID's 0x0800 - 0x080F */
for (j = 0; j < NUM_UPCI_IDS; j++) {
while ((dev =
pci_find_device(PCI_VENDOR_ID_RP, upci_ids[j], dev))) {
register_PCI(count + boards_found, dev);
count++;
}
}
return (count);
}
#endif /* Linux version 2.2/2.4 */
#endif /* CONFIG_PCI */
/*
......@@ -2465,7 +2266,7 @@ static int __init init_PCI(int boards_found)
* Input: i = the board number to look for
* Returns: 1 if board found, 0 else
*/
static int __init init_ISA(int i, int *reserved_controller)
static int __init init_ISA(int i)
{
int num_aiops, num_chan = 0, total_num_chan = 0;
int aiop, chan;
......@@ -2473,20 +2274,16 @@ static int __init init_ISA(int i, int *reserved_controller)
CONTROLLER_t *ctlp;
char *type_string;
if (rcktpt_io_addr[i] == 0 || controller == 0)
/* If io_addr is zero, no board configured */
if (rcktpt_io_addr[i] == 0)
return (0);
if (check_region(rcktpt_io_addr[i], 64)) {
printk(KERN_INFO "RocketPort board address 0x%lx in use...\n", rcktpt_io_addr[i]);
/* Reserve the IO region */
if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
rcktpt_io_addr[i] = 0;
return (0);
}
if (rcktpt_io_addr[i] + 0x40 == controller) {
*reserved_controller = 1;
request_region(rcktpt_io_addr[i], 68, "Comtrol RocketPort");
} else {
request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort");
}
ctlp = sCtlNumToCtlPtr(i);
......@@ -2522,24 +2319,22 @@ static int __init init_ISA(int i, int *reserved_controller)
for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
num_aiops =
sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
if (ctlp->boardType == ROCKET_TYPE_PC104) {
sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
sEnAiop(ctlp, 3); /* CSels used for other stuff */
}
/* If something went wrong initing the AIOP's release the ISA IO memory */
if (num_aiops <= 0) {
if (rcktpt_io_addr[i] + 0x40 == controller) {
*reserved_controller = 0;
release_region(rcktpt_io_addr[i], 68);
} else {
release_region(rcktpt_io_addr[i], 64);
}
release_region(rcktpt_io_addr[i], 64);
rcktpt_io_addr[i] = 0;
return (0);
}
rocketModel[i].startingPortNumber = nextLineNumber;
for (aiop = 0; aiop < num_aiops; aiop++) {
sResetAiopByNum(ctlp, aiop);
sEnAiop(ctlp, aiop);
......@@ -2565,9 +2360,9 @@ static int __init init_ISA(int i, int *reserved_controller)
rocketModel[i].numPorts = total_num_chan;
rocketModel[i].model = MODEL_ISA;
printk(KERN_INFO "Comtrol ISA controller #%d found at 0x%lx, "
"%d AIOPs %s\n", i, rcktpt_io_addr[i], num_aiops,
type_string);
printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
i, rcktpt_io_addr[i], num_aiops, type_string);
printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
rocketModel[i].modelString,
rocketModel[i].startingPortNumber,
......@@ -2595,10 +2390,8 @@ static struct tty_operations rocket_ops = {
.break_ctl = rp_break,
.send_xchar = rp_send_xchar,
.wait_until_sent = rp_wait_until_sent,
#if (LINUX_VERSION_CODE > VERSION_CODE(2,5,0))
.tiocmget = rp_tiocmget,
.tiocmset = rp_tiocmset,
#endif /* Kernel > 2.5 */
};
/*
......@@ -2607,7 +2400,6 @@ static struct tty_operations rocket_ops = {
int __init rp_init(void)
{
int retval, pci_boards_found, isa_boards_found, i;
int reserved_controller = 0;
printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
ROCKET_VERSION, ROCKET_DATE);
......@@ -2634,12 +2426,20 @@ int __init rp_init(void)
nextLineNumber = 0;
memset(rocketModel, 0, sizeof (rocketModel));
if (board1 && controller == 0)
controller = board1 + 0x40;
/*
* If board 1 is non-zero, there is at least one ISA configured. If controller is
* zero, use the default controller IO address of board1 + 0x40.
*/
if (board1) {
if (controller == 0)
controller = board1 + 0x40;
} else {
controller = 0; /* Used as a flag, meaning no ISA boards */
}
if (controller && check_region(controller, 4)) {
printk(KERN_INFO "Controller IO addresses in use, unloading driver.\n");
put_tty_driver(rocket_driver);
/* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
return -EBUSY;
}
......@@ -2663,9 +2463,7 @@ int __init rp_init(void)
* driver with the tty layer.
*/
#if (LINUX_VERSION_CODE > VERSION_CODE(2,5,0))
rocket_driver->owner = THIS_MODULE;
#endif /* Kernel > 2.5 */
rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
rocket_driver->devfs_name = "tts/R";
rocket_driver->name = "ttyR";
......@@ -2701,7 +2499,7 @@ int __init rp_init(void)
pci_boards_found = 0;
for (i = 0; i < NUM_BOARDS; i++) {
if (init_ISA(i, &reserved_controller))
if (init_ISA(i))
isa_boards_found++;
}
......@@ -2720,13 +2518,6 @@ int __init rp_init(void)
return -ENXIO;
}
if (isa_boards_found) {
if (reserved_controller == 0)
request_region(controller, 4, "Comtrol RocketPort");
} else {
controller = 0;
}
return 0;
}
......@@ -2736,7 +2527,6 @@ static void rp_cleanup_module(void)
{
int retval;
int i;
int released_controller = 0;
del_timer_sync(&rocket_timer);
......@@ -2754,14 +2544,9 @@ static void rp_cleanup_module(void)
for (i = 0; i < NUM_BOARDS; i++) {
if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
continue;
if (rcktpt_io_addr[i] + 0x40 == controller) {
released_controller++;
release_region(rcktpt_io_addr[i], 68);
} else {
release_region(rcktpt_io_addr[i], 64);
}
release_region(rcktpt_io_addr[i], 64);
}
if (controller && released_controller == 0)
if (controller)
release_region(controller, 4);
}
#endif
......
drivers/char/rocket.h
View file @ d125dc40
/*
* rocket.h --- the exported interface of the rocket driver to
* its configuration program.
* rocket.h --- the exported interface of the rocket driver to its configuration program.
*
* Written by Theodore Ts'o, Copyright 1997.
* Copyright 1997 Comtrol Corporation.
*
* Copyright 1994, 1997, 2003 Comtrol Corporation. All Rights Reserved.
*
* The following source code is subject to Comtrol Corporation's
* Developer's License Agreement.
*
* This source code is protected by United States copyright law and
* international copyright treaties.
*
* This source code may only be used to develop software products that
* will operate with Comtrol brand hardware.
*
* You may not reproduce nor distribute this source code in its original
* form but must produce a derivative work which includes portions of
* this source code only.
*
* The portions of this source code which you use in your derivative
* work must bear Comtrol's copyright notice:
*
* Copyright 1994 Comtrol Corporation.
*
*/
/* Model Information Struct */
......
drivers/char/rocket_int.h
View file @ d125dc40
......@@ -2,26 +2,7 @@
* rocket_int.h --- internal header file for rocket.c
*
* Written by Theodore Ts'o, Copyright 1997.
*
* Copyright 1994, 1997, 2003 Comtrol Corporation. All Rights Reserved.
*
* The following source code is subject to Comtrol Corporation's
* Developer's License Agreement.
*
* This source code is protected by United States copyright law and
* international copyright treaties.
*
* This source code may only be used to develop software products that
* will operate with Comtrol brand hardware.
*
* You may not reproduce nor distribute this source code in its original
* form but must produce a derivative work which includes portions of
* this source code only.
*
* The portions of this source code which you use in your derivative
* work must bear Comtrol's copyright notice:
*
* Copyright 1994 Comtrol Corporation.
* Copyright 1997 Comtrol Corporation.
*
*/
......@@ -98,17 +79,9 @@ static inline unsigned short sInW(unsigned short port)
#define sInW(a) (inw_p(a))
#endif /* ROCKET_DEBUG_IO */
/* This is used to move arrays of bytes so byte swapping isn't
* appropriate. On Linux 2.3 and above outsw is the same as
* outsw_ns, but we use the old form for compatibility with
* old kernels. */
#if defined(__BIG_ENDIAN) && (LINUX_VERSION_CODE < VERSION_CODE(2,3,0))
#define sOutStrW(port, addr, count) if (count) outsw_ns(port, addr, count)
#define sInStrW(port, addr, count) if (count) insw_ns(port, addr, count)
#else
/* This is used to move arrays of bytes so byte swapping isn't appropriate. */
#define sOutStrW(port, addr, count) if (count) outsw(port, addr, count)
#define sInStrW(port, addr, count) if (count) insw(port, addr, count)
#endif
#define CTL_SIZE 8
#define AIOP_CTL_SIZE 4
......@@ -1318,11 +1291,7 @@ struct r_port {
/* Compact PCI device */
#define PCI_DEVICE_ID_CRP16INTF 0x0903 /* Rocketport Compact PCI 16 port w/external I/F */
/* Taking care of some kernel incompatibilities... */
#if LINUX_VERSION_CODE > VERSION_CODE(2,5,68)
#define TTY_GET_LINE(t) t->index
#define TTY_DRIVER_MINOR_START(t) t->driver->minor_start
#define TTY_DRIVER_SUBTYPE(t) t->driver->subtype
#define TTY_DRIVER_NAME(t) t->driver->name
......@@ -1330,15 +1299,4 @@ struct r_port {
#define TTY_DRIVER_FLUSH_BUFFER_EXISTS(t) t->driver->flush_buffer
#define TTY_DRIVER_FLUSH_BUFFER(t) t->driver->flush_buffer(t)
#else
#define TTY_GET_LINE(t) minor(t->device) - TTY_DRIVER_MINOR_START(t)
#define TTY_DRIVER_MINOR_START(t) t->driver.minor_start
#define TTY_DRIVER_SUBTYPE(t) t->driver.subtype
#define TTY_DRIVER_NAME(t) t->driver.name
#define TTY_DRIVER_NAME_BASE(t) t->driver.name_base
#define TTY_DRIVER_FLUSH_BUFFER_EXISTS(t) t->driver.flush_buffer
#define TTY_DRIVER_FLUSH_BUFFER(t) t->driver.flush_buffer(t)
#endif
drivers/pci/pci.ids
View file @ d125dc40
......@@ -3752,6 +3752,8 @@
0005 Rocketport 8 port w/octa cable
0006 Rocketport 8 port w/RJ11 connectors
0007 Rocketport 4 port w/RJ11 connectors
0008 Rocketport 8 port w/ DB78 SNI (Siemens) connector
0009 Rocketport 16 port w/ DB78 SNI (Siemens) connector
000a Rocketport Plus 4 port
000b Rocketport Plus 8 port
000c RocketModem 6 port
......
drivers/scsi/scsi_scan.c
View file @ d125dc40
......@@ -619,12 +619,12 @@ static int scsi_add_lun(Scsi_Device *sdev, char *inq_result, int *bflags)
if (inq_result[7] & 0x10)
sdev->sdtr = 1;
scsi_device_register(sdev);
sprintf(sdev->devfs_name, "scsi/host%d/bus%d/target%d/lun%d",
sdev->host->host_no, sdev->channel,
sdev->id, sdev->lun);
scsi_device_register(sdev);
/*
* End driverfs/devfs code.
*/
......
fs/dcache.c
View file @ d125dc40
......@@ -1221,10 +1221,14 @@ void d_move(struct dentry * dentry, struct dentry * target)
}
/* Move the dentry to the target hash queue, if on different bucket */
if (dentry->d_vfs_flags & DCACHE_UNHASHED)
goto already_unhashed;
if (dentry->d_bucket != target->d_bucket) {
dentry->d_bucket = target->d_bucket;
hlist_del_rcu(&dentry->d_hash);
already_unhashed:
dentry->d_bucket = target->d_bucket;
hlist_add_head_rcu(&dentry->d_hash, target->d_bucket);
dentry->d_vfs_flags &= ~DCACHE_UNHASHED;
}
/* Unhash the target: dput() will then get rid of it */
......
fs/fs-writeback.c
View file @ d125dc40
......@@ -260,8 +260,21 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
struct address_space *mapping = inode->i_mapping;
struct backing_dev_info *bdi = mapping->backing_dev_info;
if (bdi->memory_backed)
if (bdi->memory_backed) {
if (sb == blockdev_superblock) {
/*
* Dirty memory-backed blockdev: the ramdisk
* driver does this.
*/
list_move(&inode->i_list, &sb->s_dirty);
continue;
}
/*
* Assume that all inodes on this superblock are memory
* backed. Skip the superblock.
*/
break;
}
if (wbc->nonblocking && bdi_write_congested(bdi)) {
wbc->encountered_congestion = 1;
......
fs/namei.c
View file @ d125dc40
......@@ -325,7 +325,7 @@ static inline int exec_permission_lite(struct inode *inode)
return -EACCES;
ok:
return security_inode_permission_lite(inode, MAY_EXEC);
return security_inode_permission(inode, MAY_EXEC);
}
/*
......
include/asm-generic/vmlinux.lds.h
View file @ d125dc40
......@@ -45,3 +45,9 @@
*(__ksymtab_strings) \
}
#define SECURITY_INIT \
.security_initcall.init : { \
__security_initcall_start = .; \
*(.security_initcall.init) \
__security_initcall_end = .; \
}
include/asm-i386/fixmap.h
View file @ d125dc40
......@@ -107,6 +107,14 @@ extern void __set_fixmap (enum fixed_addresses idx,
#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
/*
* This is the range that is readable by user mode, and things
* acting like user mode such as get_user_pages.
*/
#define FIXADDR_USER_START (__fix_to_virt(FIX_VSYSCALL))
#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE)
extern void __this_fixmap_does_not_exist(void);
/*
......
include/asm-x86_64/checksum.h
View file @ d125dc40
......@@ -125,7 +125,7 @@ csum_tcpudp_magic(unsigned long saddr, unsigned long daddr,
* Before filling it in it needs to be csum_fold()'ed.
* buff should be aligned to a 64bit boundary if possible.
*/
extern unsigned int csum_partial(const unsigned char *buff, int len, unsigned int sum);
extern unsigned int csum_partial(const unsigned char *buff, unsigned len, unsigned int sum);
#define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER 1
#define HAVE_CSUM_COPY_USER 1
......@@ -179,4 +179,14 @@ extern unsigned short
csum_ipv6_magic(struct in6_addr *saddr, struct in6_addr *daddr,
__u32 len, unsigned short proto, unsigned int sum);
static inline unsigned add32_with_carry(unsigned a, unsigned b)
{
asm("addl %2,%0\n\t"
"adcl $0,%0"
: "=r" (a)
: "0" (a), "r" (b));
return a;
}
#endif
include/asm-x86_64/fixmap.h
View file @ d125dc40
......@@ -35,6 +35,8 @@
enum fixed_addresses {
VSYSCALL_LAST_PAGE,
VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
VSYSCALL_HPET,
FIX_HPET_BASE,
#ifdef CONFIG_X86_LOCAL_APIC
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
#endif
......
include/asm-x86_64/mc146818rtc.h
View file @ d125dc40
......@@ -24,6 +24,11 @@ outb_p((addr),RTC_PORT(0)); \
outb_p((val),RTC_PORT(1)); \
})
#ifndef CONFIG_HPET_TIMER
#define RTC_IRQ 8
#else
/* Temporary workaround due to IRQ routing problem. */
#define RTC_IRQ 0
#endif
#endif /* _ASM_MC146818RTC_H */
include/asm-x86_64/processor.h
View file @ d125dc40
......@@ -313,7 +313,7 @@ extern inline void sync_core(void)
#define ARCH_HAS_PREFETCH
static inline void prefetch(void *x)
{
asm volatile("2: prefetchnta %0\n1:\t"
asm volatile("2: prefetcht0 %0\n1:\t"
".section __ex_table,\"a\"\n\t"
" .align 8\n\t"
" .quad 2b,1b\n\t"
......
include/asm-x86_64/proto.h
View file @ d125dc40
......@@ -54,6 +54,8 @@ extern void swap_low_mappings(void);
extern void oops_begin(void);
extern void die(const char *,struct pt_regs *,long);
extern void __die(const char * str, struct pt_regs * regs, long err);
extern void __show_regs(struct pt_regs * regs);
extern void show_regs(struct pt_regs * regs);
extern int map_syscall32(struct mm_struct *mm, unsigned long address);
extern char *syscall32_page;
......
include/asm-x86_64/timex.h
View file @ d125dc40
......@@ -30,6 +30,34 @@ static inline cycles_t get_cycles (void)
extern unsigned int cpu_khz;
extern struct hpet_data hpet;
/*
* Documentation on HPET can be found at:
* http://www.intel.com/ial/home/sp/pcmmspec.htm
* ftp://download.intel.com/ial/home/sp/mmts098.pdf
*/
#define HPET_ID 0x000
#define HPET_PERIOD 0x004
#define HPET_CFG 0x010
#define HPET_STATUS 0x020
#define HPET_COUNTER 0x0f0
#define HPET_T0_CFG 0x100
#define HPET_T0_CMP 0x108
#define HPET_T0_ROUTE 0x110
#define HPET_ID_VENDOR 0xffff0000
#define HPET_ID_LEGSUP 0x00008000
#define HPET_ID_NUMBER 0x00000f00
#define HPET_ID_REV 0x000000ff
#define HPET_CFG_ENABLE 0x001
#define HPET_CFG_LEGACY 0x002
#define HPET_T0_ENABLE 0x004
#define HPET_T0_PERIODIC 0x008
#define HPET_T0_SETVAL 0x040
#define HPET_T0_32BIT 0x100
extern struct vxtime_data vxtime;
#endif
include/asm-x86_64/vsyscall.h
View file @ d125dc40
......@@ -15,7 +15,7 @@ enum vsyscall_num {
#ifdef __KERNEL__
#define __section_hpet __attribute__ ((unused, __section__ (".hpet"), aligned(16)))
#define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16)))
#define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16)))
#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
#define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16)))
......@@ -23,22 +23,24 @@ enum vsyscall_num {
#define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16)))
#define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(L1_CACHE_BYTES)))
#define VXTIME_TSC 1
#define VXTIME_HPET 2
struct hpet_data {
long address; /* base address */
struct vxtime_data {
long hpet_address; /* HPET base address */
unsigned long hz; /* HPET clocks / sec */
int trigger; /* value at last interrupt */
int last;
int offset;
unsigned long last_tsc;
long ticks;
long quot;
long tsc_quot;
int mode;
};
#define hpet_readl(a) readl(fix_to_virt(FIX_HPET_BASE) + a)
#define hpet_writel(d,a) writel(d, fix_to_virt(FIX_HPET_BASE) + a)
/* vsyscall space (readonly) */
extern struct hpet_data __hpet;
extern struct vxtime_data __vxtime;
extern struct timespec __xtime;
extern volatile unsigned long __jiffies;
extern unsigned long __wall_jiffies;
......@@ -46,7 +48,7 @@ extern struct timezone __sys_tz;
extern seqlock_t __xtime_lock;
/* kernel space (writeable) */
extern struct hpet_data hpet;
extern struct vxtime_data vxtime;
extern unsigned long wall_jiffies;
extern struct timezone sys_tz;
extern int sysctl_vsyscall;
......
include/linux/dcache.h
View file @ d125dc40
......@@ -174,8 +174,10 @@ extern spinlock_t dcache_lock;
static inline void __d_drop(struct dentry *dentry)
{
dentry->d_vfs_flags |= DCACHE_UNHASHED;
hlist_del_rcu_init(&dentry->d_hash);
if (!(dentry->d_vfs_flags & DCACHE_UNHASHED)) {
dentry->d_vfs_flags |= DCACHE_UNHASHED;
hlist_del_rcu(&dentry->d_hash);
}
}
static inline void d_drop(struct dentry *dentry)
......
include/linux/init.h
View file @ d125dc40
......@@ -64,6 +64,7 @@ typedef int (*initcall_t)(void);
typedef void (*exitcall_t)(void);
extern initcall_t __con_initcall_start, __con_initcall_end;
extern initcall_t __security_initcall_start, __security_initcall_end;
#endif
#ifndef MODULE
......@@ -96,6 +97,9 @@ extern initcall_t __con_initcall_start, __con_initcall_end;
#define console_initcall(fn) \
static initcall_t __initcall_##fn __attribute__ ((unused,__section__ (".con_initcall.init")))=fn
#define security_initcall(fn) \
static initcall_t __initcall_##fn __attribute__ ((unused,__section__ (".security_initcall.init"))) = fn
struct obs_kernel_param {
const char *str;
int (*setup_func)(char *);
......@@ -143,6 +147,8 @@ struct obs_kernel_param {
#define device_initcall(fn) module_init(fn)
#define late_initcall(fn) module_init(fn)
#define security_initcall(fn) module_init(fn)
/* These macros create a dummy inline: gcc 2.9x does not count alias
as usage, hence the `unused function' warning when __init functions
are declared static. We use the dummy __*_module_inline functions
......
include/linux/list.h
View file @ d125dc40
......@@ -152,14 +152,17 @@ static inline void list_del(struct list_head *entry)
/**
* list_del_rcu - deletes entry from list without re-initialization
* @entry: the element to delete from the list.
*
* Note: list_empty on entry does not return true after this,
* the entry is in an undefined state. It is useful for RCU based
* lockfree traversal.
*
* In particular, it means that we can not poison the forward
* pointers that may still be used for walking the list.
*/
static inline void list_del_rcu(struct list_head *entry)
{
__list_del(entry->prev, entry->next);
entry->next = LIST_POISON1;
entry->prev = LIST_POISON2;
}
......@@ -431,7 +434,22 @@ static __inline__ void hlist_del(struct hlist_node *n)
n->pprev = LIST_POISON2;
}
#define hlist_del_rcu hlist_del /* list_del_rcu is identical too? */
/**
* hlist_del_rcu - deletes entry from hash list without re-initialization
* @entry: the element to delete from the hash list.
*
* Note: list_unhashed() on entry does not return true after this,
* the entry is in an undefined state. It is useful for RCU based
* lockfree traversal.
*
* In particular, it means that we can not poison the forward
* pointers that may still be used for walking the hash list.
*/
static inline void hlist_del_rcu(struct hlist_node *n)
{
__hlist_del(n);
n->pprev = LIST_POISON2;
}
static __inline__ void hlist_del_init(struct hlist_node *n)
{
......
include/linux/pci_ids.h
View file @ d125dc40
......@@ -1399,6 +1399,8 @@
#define PCI_DEVICE_ID_RP8OCTA 0x0005
#define PCI_DEVICE_ID_RP8J 0x0006
#define PCI_DEVICE_ID_RP4J 0x0007
#define PCI_DEVICE_ID_RP8SNI 0x0008
#define PCI_DEVICE_ID_RP16SNI 0x0009
#define PCI_DEVICE_ID_RPP4 0x000A
#define PCI_DEVICE_ID_RPP8 0x000B
#define PCI_DEVICE_ID_RP8M 0x000C
......
include/linux/security.h
View file @ d125dc40
......@@ -46,7 +46,6 @@ extern void cap_capset_set (struct task_struct *target, kernel_cap_t *effective,
extern int cap_bprm_set_security (struct linux_binprm *bprm);
extern void cap_bprm_compute_creds (struct linux_binprm *bprm);
extern int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
extern void cap_task_kmod_set_label (void);
extern void cap_task_reparent_to_init (struct task_struct *p);
extern int cap_syslog (int type);
......@@ -328,16 +327,6 @@ struct swap_info_struct;
* @inode contains the inode structure to check.
* @mask contains the permission mask.
* Return 0 if permission is granted.
* @inode_permission_lite:
* Check permission before accessing an inode. This hook is
* currently only called when checking MAY_EXEC access during
* pathname resolution. The dcache lock is held and thus modules
* that could sleep or contend the lock should return -EAGAIN to
* inform the kernel to drop the lock and try again calling the
* full permission hook.
* @inode contains the inode structure to check.
* @mask contains the permission mask.
* Return 0 if permission is granted.
* @inode_setattr:
* Check permission before setting file attributes. Note that the kernel
* call to notify_change is performed from several locations, whenever
......@@ -607,10 +596,6 @@ struct swap_info_struct;
* @arg4 contains a argument.
* @arg5 contains a argument.
* Return 0 if permission is granted.
* @task_kmod_set_label:
* Set the security attributes in current->security for the kernel module
* loader thread, so that it has the permissions needed to perform its
* function.
* @task_reparent_to_init:
* Set the security attributes in @p->security for a kernel thread that
* is being reparented to the init task.
......@@ -1057,7 +1042,6 @@ struct security_operations {
int (*inode_readlink) (struct dentry *dentry);
int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd);
int (*inode_permission) (struct inode *inode, int mask);
int (*inode_permission_lite) (struct inode *inode, int mask);
int (*inode_setattr) (struct dentry *dentry, struct iattr *attr);
int (*inode_getattr) (struct vfsmount *mnt, struct dentry *dentry);
void (*inode_delete) (struct inode *inode);
......@@ -1111,7 +1095,6 @@ struct security_operations {
int (*task_prctl) (int option, unsigned long arg2,
unsigned long arg3, unsigned long arg4,
unsigned long arg5);
void (*task_kmod_set_label) (void);
void (*task_reparent_to_init) (struct task_struct * p);
void (*task_to_inode)(struct task_struct *p, struct inode *inode);
......@@ -1471,12 +1454,6 @@ static inline int security_inode_permission (struct inode *inode, int mask)
return security_ops->inode_permission (inode, mask);
}
static inline int security_inode_permission_lite (struct inode *inode,
int mask)
{
return security_ops->inode_permission_lite (inode, mask);
}
static inline int security_inode_setattr (struct dentry *dentry,
struct iattr *attr)
{
......@@ -1692,11 +1669,6 @@ static inline int security_task_prctl (int option, unsigned long arg2,
return security_ops->task_prctl (option, arg2, arg3, arg4, arg5);
}
static inline void security_task_kmod_set_label (void)
{
security_ops->task_kmod_set_label ();
}
static inline void security_task_reparent_to_init (struct task_struct *p)
{
security_ops->task_reparent_to_init (p);
......@@ -2108,12 +2080,6 @@ static inline int security_inode_permission (struct inode *inode, int mask)
return 0;
}
static inline int security_inode_permission_lite (struct inode *inode,
int mask)
{
return 0;
}
static inline int security_inode_setattr (struct dentry *dentry,
struct iattr *attr)
{
......@@ -2321,11 +2287,6 @@ static inline int security_task_prctl (int option, unsigned long arg2,
return 0;
}
static inline void security_task_kmod_set_label (void)
{
cap_task_kmod_set_label ();
}
static inline void security_task_reparent_to_init (struct task_struct *p)
{
cap_task_reparent_to_init (p);
......
init/main.c
View file @ d125dc40
......@@ -439,8 +439,8 @@ asmlinkage void __init start_kernel(void)
pte_chain_init();
fork_init(num_physpages);
proc_caches_init();
security_scaffolding_startup();
buffer_init();
security_scaffolding_startup();
vfs_caches_init(num_physpages);
radix_tree_init();
signals_init();
......
kernel/sys.c
View file @ d125dc40
......@@ -831,13 +831,11 @@ asmlinkage long sys_getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid)
asmlinkage long sys_setfsuid(uid_t uid)
{
int old_fsuid;
int retval;
retval = security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS);
if (retval)
return retval;
old_fsuid = current->fsuid;
if (security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS))
return old_fsuid;
if (uid == current->uid || uid == current->euid ||
uid == current->suid || uid == current->fsuid ||
capable(CAP_SETUID))
......@@ -850,9 +848,7 @@ asmlinkage long sys_setfsuid(uid_t uid)
current->fsuid = uid;
}
retval = security_task_post_setuid(old_fsuid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS);
if (retval)
return retval;
security_task_post_setuid(old_fsuid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS);
return old_fsuid;
}
......@@ -863,13 +859,11 @@ asmlinkage long sys_setfsuid(uid_t uid)
asmlinkage long sys_setfsgid(gid_t gid)
{
int old_fsgid;
int retval;
retval = security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_FS);
if (retval)
return retval;
old_fsgid = current->fsgid;
if (security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_FS))
return old_fsgid;
if (gid == current->gid || gid == current->egid ||
gid == current->sgid || gid == current->fsgid ||
capable(CAP_SETGID))
......
mm/memory.c
View file @ d125dc40
......@@ -689,15 +689,16 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
vma = find_extend_vma(mm, start);
#ifdef FIXADDR_START
if (!vma && start >= FIXADDR_START && start < FIXADDR_TOP) {
#ifdef FIXADDR_USER_START
if (!vma &&
start >= FIXADDR_USER_START && start < FIXADDR_USER_END) {
static struct vm_area_struct fixmap_vma = {
/* Catch users - if there are any valid
ones, we can make this be "&init_mm" or
something. */
.vm_mm = NULL,
.vm_start = FIXADDR_START,
.vm_end = FIXADDR_TOP,
.vm_start = FIXADDR_USER_START,
.vm_end = FIXADDR_USER_END,
.vm_page_prot = PAGE_READONLY,
.vm_flags = VM_READ | VM_EXEC,
};
......@@ -705,6 +706,8 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
if (write) /* user fixmap pages are read-only */
return i ? : -EFAULT;
pgd = pgd_offset_k(pg);
if (!pgd)
return i ? : -EFAULT;
......@@ -712,8 +715,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
if (!pmd)
return i ? : -EFAULT;
pte = pte_offset_kernel(pmd, pg);
if (!pte || !pte_present(*pte) || !pte_user(*pte) ||
!(write ? pte_write(*pte) : pte_read(*pte)))
if (!pte || !pte_present(*pte))
return i ? : -EFAULT;
if (pages) {
pages[i] = pte_page(*pte);
......
security/capability.c
View file @ d125dc40
......@@ -248,12 +248,6 @@ int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
return 0;
}
void cap_task_kmod_set_label (void)
{
cap_set_full (current->cap_effective);
return;
}
void cap_task_reparent_to_init (struct task_struct *p)
{
p->cap_effective = CAP_INIT_EFF_SET;
......@@ -278,7 +272,6 @@ EXPORT_SYMBOL(cap_capset_set);
EXPORT_SYMBOL(cap_bprm_set_security);
EXPORT_SYMBOL(cap_bprm_compute_creds);
EXPORT_SYMBOL(cap_task_post_setuid);
EXPORT_SYMBOL(cap_task_kmod_set_label);
EXPORT_SYMBOL(cap_task_reparent_to_init);
EXPORT_SYMBOL(cap_syslog);
......@@ -298,7 +291,6 @@ static struct security_operations capability_ops = {
.bprm_set_security = cap_bprm_set_security,
.task_post_setuid = cap_task_post_setuid,
.task_kmod_set_label = cap_task_kmod_set_label,
.task_reparent_to_init = cap_task_reparent_to_init,
.syslog = cap_syslog,
......@@ -348,7 +340,7 @@ static void __exit capability_exit (void)
}
}
module_init (capability_init);
security_initcall (capability_init);
module_exit (capability_exit);
MODULE_DESCRIPTION("Standard Linux Capabilities Security Module");
......
security/dummy.c
View file @ d125dc40
......@@ -308,11 +308,6 @@ static int dummy_inode_permission (struct inode *inode, int mask)
return 0;
}
static int dummy_inode_permission_lite (struct inode *inode, int mask)
{
return 0;
}
static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr)
{
return 0;
......@@ -517,11 +512,6 @@ static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,
return 0;
}
static void dummy_task_kmod_set_label (void)
{
return;
}
static void dummy_task_reparent_to_init (struct task_struct *p)
{
p->euid = p->fsuid = 0;
......@@ -831,7 +821,6 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, inode_readlink);
set_to_dummy_if_null(ops, inode_follow_link);
set_to_dummy_if_null(ops, inode_permission);
set_to_dummy_if_null(ops, inode_permission_lite);
set_to_dummy_if_null(ops, inode_setattr);
set_to_dummy_if_null(ops, inode_getattr);
set_to_dummy_if_null(ops, inode_delete);
......@@ -871,7 +860,6 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, task_wait);
set_to_dummy_if_null(ops, task_kill);
set_to_dummy_if_null(ops, task_prctl);
set_to_dummy_if_null(ops, task_kmod_set_label);
set_to_dummy_if_null(ops, task_reparent_to_init);
set_to_dummy_if_null(ops, task_to_inode);
set_to_dummy_if_null(ops, ipc_permission);
......
security/root_plug.c
View file @ d125dc40
......@@ -94,7 +94,6 @@ static struct security_operations rootplug_security_ops = {
.bprm_set_security = cap_bprm_set_security,
.task_post_setuid = cap_task_post_setuid,
.task_kmod_set_label = cap_task_kmod_set_label,
.task_reparent_to_init = cap_task_reparent_to_init,
.bprm_check_security = rootplug_bprm_check_security,
......@@ -135,7 +134,7 @@ static void __exit rootplug_exit (void)
printk (KERN_INFO "Root Plug module removed\n");
}
module_init (rootplug_init);
security_initcall (rootplug_init);
module_exit (rootplug_exit);
MODULE_DESCRIPTION("Root Plug sample LSM module, written for Linux Journal article");
......
security/security.c
View file @ d125dc40
......@@ -38,12 +38,22 @@ static inline int verify (struct security_operations *ops)
return 0;
}
static void __init do_security_initcalls(void)
{
initcall_t *call;
call = &__security_initcall_start;
while (call < &__security_initcall_end) {
(*call)();
call++;
}
}
/**
* security_scaffolding_startup - initialzes the security scaffolding framework
*
* This should be called early in the kernel initialization sequence.
*/
int security_scaffolding_startup (void)
int __init security_scaffolding_startup (void)
{
printk (KERN_INFO "Security Scaffold v" SECURITY_SCAFFOLD_VERSION
" initialized\n");
......@@ -55,6 +65,7 @@ int security_scaffolding_startup (void)
}
security_ops = &dummy_security_ops;
do_security_initcalls();
return 0;
}
......
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