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Merge branches 'x86/tracehook', 'x86/xsave' and 'x86/prototypes' into x86/signal 

Conflicts:
	arch/x86/kernel/signal_64.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-09-06 14:53:01 +02:00
parent 70bb08962e 4ab4ba32aa fe47784ba5 8d7ccaa545
commit 046fd53773
375 changed files with 5668 additions and 1968 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/kernel-parameters.txt
View File

@ -1425,6 +1425,12 @@ and is between 256 and 4096 characters. It is defined in the file
nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
nox2apic [X86-64,APIC] Do not enable x2APIC mode.
x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
default x2apic cluster mode on platforms
supporting x2apic.
noltlbs [PPC] Do not use large page/tlb entries for kernel
lowmem mapping on PPC40x.

9
arch/x86/Kconfig
View File

@ -29,6 +29,7 @@ config X86
select HAVE_FTRACE
select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
select HAVE_ARCH_KGDB if !X86_VOYAGER
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_DMA_COHERENT if X86_32
select HAVE_EFFICIENT_UNALIGNED_ACCESS
@ -1643,6 +1644,14 @@ config DMAR_FLOPPY_WA
workaround will setup a 1:1 mapping for the first
16M to make floppy (an ISA device) work.
config INTR_REMAP
bool "Support for Interrupt Remapping (EXPERIMENTAL)"
depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
help
Supports Interrupt remapping for IO-APIC and MSI devices.
To use x2apic mode in the CPU's which support x2APIC enhancements or
to support platforms with CPU's having > 8 bit APIC ID, say Y.
source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"

70
arch/x86/Kconfig.cpu
View File

@ -415,3 +415,73 @@ config X86_MINIMUM_CPU_FAMILY
config X86_DEBUGCTLMSR
def_bool y
depends on !(MK6 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
menuconfig PROCESSOR_SELECT
default y
bool "Supported processor vendors" if EMBEDDED
help
This lets you choose what x86 vendor support code your kernel
will include.
config CPU_SUP_INTEL_32
default y
bool "Support Intel processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Intel processors
config CPU_SUP_INTEL_64
default y
bool "Support Intel processors" if PROCESSOR_SELECT
depends on 64BIT
help
This enables extended support for Intel processors
config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Cyrix processors
config CPU_SUP_AMD_32
default y
bool "Support AMD processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for AMD processors
config CPU_SUP_AMD_64
default y
bool "Support AMD processors" if PROCESSOR_SELECT
depends on 64BIT
help
This enables extended support for AMD processors
config CPU_SUP_CENTAUR_32
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Centaur processors
config CPU_SUP_CENTAUR_64
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on 64BIT
help
This enables extended support for Centaur processors
config CPU_SUP_TRANSMETA_32
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for Transmeta processors
config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on !64BIT
help
This enables extended support for UMC processors

2
arch/x86/boot/compressed/misc.c
View File

@ -16,7 +16,7 @@
*/
#undef CONFIG_PARAVIRT
#ifdef CONFIG_X86_32
#define _ASM_DESC_H_ 1
#define ASM_X86__DESC_H 1
#endif
#ifdef CONFIG_X86_64

8
arch/x86/boot/cpucheck.c
View File

@ -38,12 +38,12 @@ static const u32 req_flags[NCAPINTS] =
{
REQUIRED_MASK0,
REQUIRED_MASK1,
REQUIRED_MASK2,
REQUIRED_MASK3,
0, /* REQUIRED_MASK2 not implemented in this file */
0, /* REQUIRED_MASK3 not implemented in this file */
REQUIRED_MASK4,
REQUIRED_MASK5,
0, /* REQUIRED_MASK5 not implemented in this file */
REQUIRED_MASK6,
REQUIRED_MASK7,
0, /* REQUIRED_MASK7 not implemented in this file */
};
#define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))

2
arch/x86/boot/mkcpustr.c
View File

@ -15,7 +15,7 @@
#include <stdio.h>
#include "../kernel/cpu/feature_names.c"
#include "../kernel/cpu/capflags.c"
#if NCAPFLAGS > 8
# error "Need to adjust the boot code handling of CPUID strings"

0
arch/x86/mach-es7000/Makefile → arch/x86/es7000/Makefile
View File

18
arch/x86/mach-es7000/es7000.h → arch/x86/es7000/es7000.h
View File

@ -1,7 +1,7 @@
/*
* Written by: Garry Forsgren, Unisys Corporation
* Natalie Protasevich, Unisys Corporation
* This file contains the code to configure and interface
* This file contains the code to configure and interface
* with Unisys ES7000 series hardware system manager.
*
* Copyright (c) 2003 Unisys Corporation. All Rights Reserved.
@ -18,7 +18,7 @@
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Unisys Corporation, Township Line & Union Meeting
* Contact information: Unisys Corporation, Township Line & Union Meeting
* Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
*
* http://www.unisys.com
@ -41,7 +41,7 @@
#define MIP_VALID 0x0100000000000000ULL
#define MIP_PORT(VALUE) ((VALUE >> 32) & 0xffff)
#define MIP_RD_LO(VALUE) (VALUE & 0xffffffff)
#define MIP_RD_LO(VALUE) (VALUE & 0xffffffff)
struct mip_reg_info {
unsigned long long mip_info;
@ -51,11 +51,11 @@ struct mip_reg_info {
};
struct part_info {
unsigned char type;
unsigned char type;
unsigned char length;
unsigned char part_id;
unsigned char apic_mode;
unsigned long snum;
unsigned long snum;
char ptype[16];
char sname[64];
char pname[64];
@ -68,11 +68,11 @@ struct psai {
};
struct es7000_mem_info {
unsigned char type;
unsigned char type;
unsigned char length;
unsigned char resv[6];
unsigned long long start;
unsigned long long size;
unsigned long long start;
unsigned long long size;
};
struct es7000_oem_table {
@ -106,7 +106,7 @@ struct mip_reg {
};
#define MIP_SW_APIC 0x1020b
#define MIP_FUNC(VALUE) (VALUE & 0xff)
#define MIP_FUNC(VALUE) (VALUE & 0xff)
extern int parse_unisys_oem (char *oemptr);
extern void setup_unisys(void);

2
arch/x86/mach-es7000/es7000plat.c → arch/x86/es7000/es7000plat.c
View File

@ -72,7 +72,7 @@ es7000_rename_gsi(int ioapic, int gsi)
base += nr_ioapic_registers[i];
}
if (!ioapic && (gsi < 16))
if (!ioapic && (gsi < 16))
gsi += base;
return gsi;
}

51
arch/x86/ia32/ia32_signal.c
View File

@ -179,9 +179,10 @@ struct sigframe
u32 pretcode;
int sig;
struct sigcontext_ia32 sc;
struct _fpstate_ia32 fpstate;
struct _fpstate_ia32 fpstate_unused; /* look at kernel/sigframe.h */
unsigned int extramask[_COMPAT_NSIG_WORDS-1];
char retcode[8];
/* fp state follows here */
};
struct rt_sigframe
@ -192,8 +193,8 @@ struct rt_sigframe
u32 puc;
compat_siginfo_t info;
struct ucontext_ia32 uc;
struct _fpstate_ia32 fpstate;
char retcode[8];
/* fp state follows here */
};
#define COPY(x) { \
@ -215,7 +216,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
unsigned int *peax)
{
unsigned int tmpflags, gs, oldgs, err = 0;
struct _fpstate_ia32 __user *buf;
void __user *buf;
u32 tmp;
/* Always make any pending restarted system calls return -EINTR */
@ -259,26 +260,12 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
err |= __get_user(tmp, &sc->fpstate);
buf = compat_ptr(tmp);
if (buf) {
if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
goto badframe;
err |= restore_i387_ia32(buf);
} else {
struct task_struct *me = current;
if (used_math()) {
clear_fpu(me);
clear_used_math();
}
}
err |= restore_i387_xstate_ia32(buf);
err |= __get_user(tmp, &sc->ax);
*peax = tmp;
return err;
badframe:
return 1;
}
asmlinkage long sys32_sigreturn(struct pt_regs *regs)
@ -350,7 +337,7 @@ badframe:
*/
static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
struct _fpstate_ia32 __user *fpstate,
void __user *fpstate,
struct pt_regs *regs, unsigned int mask)
{
int tmp, err = 0;
@ -381,7 +368,7 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
err |= __put_user((u32)regs->flags, &sc->flags);
err |= __put_user((u32)regs->sp, &sc->sp_at_signal);
tmp = save_i387_ia32(fpstate);
tmp = save_i387_xstate_ia32(fpstate);
if (tmp < 0)
err = -EFAULT;
else {
@ -402,7 +389,8 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
* Determine which stack to use..
*/
static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size)
size_t frame_size,
void **fpstate)
{
unsigned long sp;
@ -421,6 +409,11 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
ka->sa.sa_restorer)
sp = (unsigned long) ka->sa.sa_restorer;
if (used_math()) {
sp = sp - sig_xstate_ia32_size;
*fpstate = (struct _fpstate_ia32 *) sp;
}
sp -= frame_size;
/* Align the stack pointer according to the i386 ABI,
* i.e. so that on function entry ((sp + 4) & 15) == 0. */
@ -434,6 +427,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
struct sigframe __user *frame;
void __user *restorer;
int err = 0;
void __user *fpstate = NULL;
/* copy_to_user optimizes that into a single 8 byte store */
static const struct {
@ -448,7 +442,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
0,
};
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -457,8 +451,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
if (err)
goto give_sigsegv;
err |= ia32_setup_sigcontext(&frame->sc, &frame->fpstate, regs,
set->sig[0]);
err |= ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
if (err)
goto give_sigsegv;
@ -522,6 +515,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
struct rt_sigframe __user *frame;
void __user *restorer;
int err = 0;
void __user *fpstate = NULL;
/* __copy_to_user optimizes that into a single 8 byte store */
static const struct {
@ -537,7 +531,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
0,
};
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -550,13 +544,16 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
goto give_sigsegv;
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
if (cpu_has_xsave)
err |= __put_user(UC_FP_XSTATE, &frame->uc.uc_flags);
else
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->sp),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, fpstate,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)

4
arch/x86/kernel/Makefile
View File

@ -38,7 +38,7 @@ obj-y += tsc.o io_delay.o rtc.o
obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o
obj-y += process.o
obj-y += i387.o
obj-y += i387.o xsave.o
obj-y += ptrace.o
obj-y += ds.o
obj-$(CONFIG_X86_32) += tls.o
@ -104,6 +104,8 @@ obj-$(CONFIG_OLPC) += olpc.o
ifeq ($(CONFIG_X86_64),y)
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
obj-y += bios_uv.o
obj-y += genx2apic_cluster.o
obj-y += genx2apic_phys.o
obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o
obj-$(CONFIG_AUDIT) += audit_64.o

4
arch/x86/kernel/acpi/boot.c
View File

@ -775,7 +775,7 @@ static void __init acpi_register_lapic_address(unsigned long address)
set_fixmap_nocache(FIX_APIC_BASE, address);
if (boot_cpu_physical_apicid == -1U) {
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
boot_cpu_physical_apicid = read_apic_id();
#ifdef CONFIG_X86_32
apic_version[boot_cpu_physical_apicid] =
GET_APIC_VERSION(apic_read(APIC_LVR));
@ -1351,7 +1351,9 @@ static void __init acpi_process_madt(void)
acpi_ioapic = 1;
smp_found_config = 1;
#ifdef CONFIG_X86_32
setup_apic_routing();
#endif
}
}
if (error == -EINVAL) {

36
arch/x86/kernel/alternative.c
View File

@ -145,35 +145,25 @@ static const unsigned char *const p6_nops[ASM_NOP_MAX+1] = {
extern char __vsyscall_0;
const unsigned char *const *find_nop_table(void)
{
return boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ||
boot_cpu_data.x86 < 6 ? k8_nops : p6_nops;
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
boot_cpu_has(X86_FEATURE_NOPL))
return p6_nops;
else
return k8_nops;
}
#else /* CONFIG_X86_64 */
static const struct nop {
int cpuid;
const unsigned char *const *noptable;
} noptypes[] = {
{ X86_FEATURE_K8, k8_nops },
{ X86_FEATURE_K7, k7_nops },
{ X86_FEATURE_P4, p6_nops },
{ X86_FEATURE_P3, p6_nops },
{ -1, NULL }
};
const unsigned char *const *find_nop_table(void)
{
const unsigned char *const *noptable = intel_nops;
int i;
for (i = 0; noptypes[i].cpuid >= 0; i++) {
if (boot_cpu_has(noptypes[i].cpuid)) {
noptable = noptypes[i].noptable;
break;
}
}
return noptable;
if (boot_cpu_has(X86_FEATURE_K8))
return k8_nops;
else if (boot_cpu_has(X86_FEATURE_K7))
return k7_nops;
else if (boot_cpu_has(X86_FEATURE_NOPL))
return p6_nops;
else
return intel_nops;
}
#endif /* CONFIG_X86_64 */

41
arch/x86/kernel/apic_32.c
View File

@ -145,13 +145,18 @@ static int modern_apic(void)
return lapic_get_version() >= 0x14;
}
void apic_wait_icr_idle(void)
/*
* Paravirt kernels also might be using these below ops. So we still
* use generic apic_read()/apic_write(), which might be pointing to different
* ops in PARAVIRT case.
*/
void xapic_wait_icr_idle(void)
{
while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_relax();
}
u32 safe_apic_wait_icr_idle(void)
u32 safe_xapic_wait_icr_idle(void)
{
u32 send_status;
int timeout;
@ -167,6 +172,34 @@ u32 safe_apic_wait_icr_idle(void)
return send_status;
}
void xapic_icr_write(u32 low, u32 id)
{
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(id));
apic_write(APIC_ICR, low);
}
u64 xapic_icr_read(void)
{
u32 icr1, icr2;
icr2 = apic_read(APIC_ICR2);
icr1 = apic_read(APIC_ICR);
return icr1 | ((u64)icr2 << 32);
}
static struct apic_ops xapic_ops = {
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.icr_read = xapic_icr_read,
.icr_write = xapic_icr_write,
.wait_icr_idle = xapic_wait_icr_idle,
.safe_wait_icr_idle = safe_xapic_wait_icr_idle,
};
struct apic_ops __read_mostly *apic_ops = &xapic_ops;
EXPORT_SYMBOL_GPL(apic_ops);
/**
* enable_NMI_through_LVT0 - enable NMI through local vector table 0
*/
@ -1205,7 +1238,7 @@ void __init init_apic_mappings(void)
* default configuration (or the MP table is broken).
*/
if (boot_cpu_physical_apicid == -1U)
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
boot_cpu_physical_apicid = read_apic_id();
}
@ -1242,7 +1275,7 @@ int __init APIC_init_uniprocessor(void)
* might be zero if read from MP tables. Get it from LAPIC.
*/
#ifdef CONFIG_CRASH_DUMP
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
boot_cpu_physical_apicid = read_apic_id();
#endif
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);

237
arch/x86/kernel/apic_64.c
View File

@ -27,6 +27,7 @@
#include <linux/clockchips.h>
#include <linux/acpi_pmtmr.h>
#include <linux/module.h>
#include <linux/dmar.h>
#include <asm/atomic.h>
#include <asm/smp.h>
@ -39,6 +40,7 @@
#include <asm/proto.h>
#include <asm/timex.h>
#include <asm/apic.h>
#include <asm/i8259.h>
#include <mach_ipi.h>
#include <mach_apic.h>
@ -46,6 +48,11 @@
static int disable_apic_timer __cpuinitdata;
static int apic_calibrate_pmtmr __initdata;
int disable_apic;
int disable_x2apic;
int x2apic;
/* x2apic enabled before OS handover */
int x2apic_preenabled;
/* Local APIC timer works in C2 */
int local_apic_timer_c2_ok;
@ -118,13 +125,13 @@ static int modern_apic(void)
return lapic_get_version() >= 0x14;
}
void apic_wait_icr_idle(void)
void xapic_wait_icr_idle(void)
{
while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_relax();
}
u32 safe_apic_wait_icr_idle(void)
u32 safe_xapic_wait_icr_idle(void)
{
u32 send_status;
int timeout;
@ -140,6 +147,69 @@ u32 safe_apic_wait_icr_idle(void)
return send_status;
}
void xapic_icr_write(u32 low, u32 id)
{
apic_write(APIC_ICR2, id << 24);
apic_write(APIC_ICR, low);
}
u64 xapic_icr_read(void)
{
u32 icr1, icr2;
icr2 = apic_read(APIC_ICR2);
icr1 = apic_read(APIC_ICR);
return (icr1 | ((u64)icr2 << 32));
}
static struct apic_ops xapic_ops = {
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.icr_read = xapic_icr_read,
.icr_write = xapic_icr_write,
.wait_icr_idle = xapic_wait_icr_idle,
.safe_wait_icr_idle = safe_xapic_wait_icr_idle,
};
struct apic_ops __read_mostly *apic_ops = &xapic_ops;
EXPORT_SYMBOL_GPL(apic_ops);
static void x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return;
}
static u32 safe_x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return 0;
}
void x2apic_icr_write(u32 low, u32 id)
{
wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low);
}
u64 x2apic_icr_read(void)
{
unsigned long val;
rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val);
return val;
}
static struct apic_ops x2apic_ops = {
.read = native_apic_msr_read,
.write = native_apic_msr_write,
.icr_read = x2apic_icr_read,
.icr_write = x2apic_icr_write,
.wait_icr_idle = x2apic_wait_icr_idle,
.safe_wait_icr_idle = safe_x2apic_wait_icr_idle,
};
/**
* enable_NMI_through_LVT0 - enable NMI through local vector table 0
*/
@ -629,10 +699,10 @@ int __init verify_local_APIC(void)
/*
* The ID register is read/write in a real APIC.
*/
reg0 = read_apic_id();
reg0 = apic_read(APIC_ID);
apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
reg1 = read_apic_id();
reg1 = apic_read(APIC_ID);
apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
apic_write(APIC_ID, reg0);
if (reg1 != (reg0 ^ APIC_ID_MASK))
@ -833,6 +903,125 @@ void __cpuinit end_local_APIC_setup(void)
apic_pm_activate();
}
void check_x2apic(void)
{
int msr, msr2;
rdmsr(MSR_IA32_APICBASE, msr, msr2);
if (msr & X2APIC_ENABLE) {
printk("x2apic enabled by BIOS, switching to x2apic ops\n");
x2apic_preenabled = x2apic = 1;
apic_ops = &x2apic_ops;
}
}
void enable_x2apic(void)
{
int msr, msr2;
rdmsr(MSR_IA32_APICBASE, msr, msr2);
if (!(msr & X2APIC_ENABLE)) {
printk("Enabling x2apic\n");
wrmsr(MSR_IA32_APICBASE, msr | X2APIC_ENABLE, 0);
}
}
void enable_IR_x2apic(void)
{
#ifdef CONFIG_INTR_REMAP
int ret;
unsigned long flags;
if (!cpu_has_x2apic)
return;
if (!x2apic_preenabled && disable_x2apic) {
printk(KERN_INFO
"Skipped enabling x2apic and Interrupt-remapping "
"because of nox2apic\n");
return;
}
if (x2apic_preenabled && disable_x2apic)
panic("Bios already enabled x2apic, can't enforce nox2apic");
if (!x2apic_preenabled && skip_ioapic_setup) {
printk(KERN_INFO
"Skipped enabling x2apic and Interrupt-remapping "
"because of skipping io-apic setup\n");
return;
}
ret = dmar_table_init();
if (ret) {
printk(KERN_INFO
"dmar_table_init() failed with %d:\n", ret);
if (x2apic_preenabled)
panic("x2apic enabled by bios. But IR enabling failed");
else
printk(KERN_INFO
"Not enabling x2apic,Intr-remapping\n");
return;
}
local_irq_save(flags);
mask_8259A();
save_mask_IO_APIC_setup();
ret = enable_intr_remapping(1);
if (ret && x2apic_preenabled) {
local_irq_restore(flags);
panic("x2apic enabled by bios. But IR enabling failed");
}
if (ret)
goto end;
if (!x2apic) {
x2apic = 1;
apic_ops = &x2apic_ops;
enable_x2apic();
}
end:
if (ret)
/*
* IR enabling failed
*/
restore_IO_APIC_setup();
else
reinit_intr_remapped_IO_APIC(x2apic_preenabled);
unmask_8259A();
local_irq_restore(flags);
if (!ret) {
if (!x2apic_preenabled)
printk(KERN_INFO
"Enabled x2apic and interrupt-remapping\n");
else
printk(KERN_INFO
"Enabled Interrupt-remapping\n");
} else
printk(KERN_ERR
"Failed to enable Interrupt-remapping and x2apic\n");
#else
if (!cpu_has_x2apic)
return;
if (x2apic_preenabled)
panic("x2apic enabled prior OS handover,"
" enable CONFIG_INTR_REMAP");
printk(KERN_INFO "Enable CONFIG_INTR_REMAP for enabling intr-remapping "
" and x2apic\n");
#endif
return;
}
/*
* Detect and enable local APICs on non-SMP boards.
* Original code written by Keir Fraser.
@ -872,7 +1061,7 @@ void __init early_init_lapic_mapping(void)
* Fetch the APIC ID of the BSP in case we have a
* default configuration (or the MP table is broken).
*/
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
boot_cpu_physical_apicid = read_apic_id();
}
/**
@ -880,6 +1069,11 @@ void __init early_init_lapic_mapping(void)
*/
void __init init_apic_mappings(void)
{
if (x2apic) {
boot_cpu_physical_apicid = read_apic_id();
return;
}
/*
* If no local APIC can be found then set up a fake all
* zeroes page to simulate the local APIC and another
@ -899,7 +1093,7 @@ void __init init_apic_mappings(void)
* Fetch the APIC ID of the BSP in case we have a
* default configuration (or the MP table is broken).
*/
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
boot_cpu_physical_apicid = read_apic_id();
}
/*
@ -918,6 +1112,9 @@ int __init APIC_init_uniprocessor(void)
return -1;
}
enable_IR_x2apic();
setup_apic_routing();
verify_local_APIC();
connect_bsp_APIC();
@ -1093,6 +1290,11 @@ void __cpuinit generic_processor_info(int apicid, int version)
cpu_set(cpu, cpu_present_map);
}
int hard_smp_processor_id(void)
{
return read_apic_id();
}
/*
* Power management
*/
@ -1129,7 +1331,7 @@ static int lapic_suspend(struct sys_device *dev, pm_message_t state)
maxlvt = lapic_get_maxlvt();
apic_pm_state.apic_id = read_apic_id();
apic_pm_state.apic_id = apic_read(APIC_ID);
apic_pm_state.apic_taskpri = apic_read(APIC_TASKPRI);
apic_pm_state.apic_ldr = apic_read(APIC_LDR);
apic_pm_state.apic_dfr = apic_read(APIC_DFR);
@ -1164,10 +1366,14 @@ static int lapic_resume(struct sys_device *dev)
maxlvt = lapic_get_maxlvt();
local_irq_save(flags);
rdmsr(MSR_IA32_APICBASE, l, h);
l &= ~MSR_IA32_APICBASE_BASE;
l |= MSR_IA32_APICBASE_ENABLE | mp_lapic_addr;
wrmsr(MSR_IA32_APICBASE, l, h);
if (!x2apic) {
rdmsr(MSR_IA32_APICBASE, l, h);
l &= ~MSR_IA32_APICBASE_BASE;
l |= MSR_IA32_APICBASE_ENABLE | mp_lapic_addr;
wrmsr(MSR_IA32_APICBASE, l, h);
} else
enable_x2apic();
apic_write(APIC_LVTERR, ERROR_APIC_VECTOR | APIC_LVT_MASKED);
apic_write(APIC_ID, apic_pm_state.apic_id);
apic_write(APIC_DFR, apic_pm_state.apic_dfr);
@ -1307,6 +1513,15 @@ __cpuinit int apic_is_clustered_box(void)
return (clusters > 2);
}
static __init int setup_nox2apic(char *str)
{
disable_x2apic = 1;
clear_cpu_cap(&boot_cpu_data, X86_FEATURE_X2APIC);
return 0;
}
early_param("nox2apic", setup_nox2apic);
/*
* APIC command line parameters
*/

2
arch/x86/kernel/asm-offsets_64.c
View File

@ -22,7 +22,7 @@
#define __NO_STUBS 1
#undef __SYSCALL
#undef _ASM_X86_64_UNISTD_H_
#undef ASM_X86__UNISTD_64_H
#define __SYSCALL(nr, sym) [nr] = 1,
static char syscalls[] = {
#include <asm/unistd.h>

32
arch/x86/kernel/cpu/Makefile
View File

@ -3,22 +3,32 @@
#
obj-y := intel_cacheinfo.o addon_cpuid_features.o
obj-y += proc.o feature_names.o
obj-y += proc.o capflags.o powerflags.o
obj-$(CONFIG_X86_32) += common.o bugs.o
obj-$(CONFIG_X86_32) += common.o bugs.o cmpxchg.o
obj-$(CONFIG_X86_64) += common_64.o bugs_64.o
obj-$(CONFIG_X86_32) += amd.o
obj-$(CONFIG_X86_64) += amd_64.o
obj-$(CONFIG_X86_32) += cyrix.o
obj-$(CONFIG_X86_32) += centaur.o
obj-$(CONFIG_X86_64) += centaur_64.o
obj-$(CONFIG_X86_32) += transmeta.o
obj-$(CONFIG_X86_32) += intel.o
obj-$(CONFIG_X86_64) += intel_64.o
obj-$(CONFIG_X86_32) += umc.o
obj-$(CONFIG_CPU_SUP_AMD_32) += amd.o
obj-$(CONFIG_CPU_SUP_AMD_64) += amd_64.o
obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o
obj-$(CONFIG_CPU_SUP_CENTAUR_32) += centaur.o
obj-$(CONFIG_CPU_SUP_CENTAUR_64) += centaur_64.o
obj-$(CONFIG_CPU_SUP_TRANSMETA_32) += transmeta.o
obj-$(CONFIG_CPU_SUP_INTEL_32) += intel.o
obj-$(CONFIG_CPU_SUP_INTEL_64) += intel_64.o
obj-$(CONFIG_CPU_SUP_UMC_32) += umc.o
obj-$(CONFIG_X86_MCE) += mcheck/
obj-$(CONFIG_MTRR) += mtrr/
obj-$(CONFIG_CPU_FREQ) += cpufreq/
obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
quiet_cmd_mkcapflags = MKCAP $@
cmd_mkcapflags = $(PERL) $(srctree)/$(src)/mkcapflags.pl $< $@
cpufeature = $(src)/../../../../include/asm-x86/cpufeature.h
targets += capflags.c
$(obj)/capflags.c: $(cpufeature) $(src)/mkcapflags.pl FORCE
$(call if_changed,mkcapflags)

72
arch/x86/kernel/cpu/cmpxchg.c Normal file
View File

@ -0,0 +1,72 @@
/*
* cmpxchg*() fallbacks for CPU not supporting these instructions
*/
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/module.h>
#ifndef CONFIG_X86_CMPXCHG
unsigned long cmpxchg_386_u8(volatile void *ptr, u8 old, u8 new)
{
u8 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u8 *)ptr;
if (prev == old)
*(u8 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u8);
unsigned long cmpxchg_386_u16(volatile void *ptr, u16 old, u16 new)
{
u16 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u16 *)ptr;
if (prev == old)
*(u16 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u16);
unsigned long cmpxchg_386_u32(volatile void *ptr, u32 old, u32 new)
{
u32 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u32 *)ptr;
if (prev == old)
*(u32 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u32);
#endif
#ifndef CONFIG_X86_CMPXCHG64
unsigned long long cmpxchg_486_u64(volatile void *ptr, u64 old, u64 new)
{
u64 prev;
unsigned long flags;
/* Poor man's cmpxchg8b for 386 and 486. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u64 *)ptr;
if (prev == old)
*(u64 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_486_u64);
#endif

45
arch/x86/kernel/cpu/common.c
View File

@ -13,6 +13,7 @@
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/pat.h>
#include <asm/asm.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/mpspec.h>
#include <asm/apic.h>
@ -341,6 +342,35 @@ static void __init early_cpu_detect(void)
early_get_cap(c);
}
/*
* The NOPL instruction is supposed to exist on all CPUs with
* family >= 6, unfortunately, that's not true in practice because
* of early VIA chips and (more importantly) broken virtualizers that
* are not easy to detect. Hence, probe for it based on first
* principles.
*/
static void __cpuinit detect_nopl(struct cpuinfo_x86 *c)
{
const u32 nopl_signature = 0x888c53b1; /* Random number */
u32 has_nopl = nopl_signature;
clear_cpu_cap(c, X86_FEATURE_NOPL);
if (c->x86 >= 6) {
asm volatile("\n"
"1: .byte 0x0f,0x1f,0xc0\n" /* nopl %eax */
"2:\n"
" .section .fixup,\"ax\"\n"
"3: xor %0,%0\n"
" jmp 2b\n"
" .previous\n"
_ASM_EXTABLE(1b,3b)
: "+a" (has_nopl));
if (has_nopl == nopl_signature)
set_cpu_cap(c, X86_FEATURE_NOPL);
}
}
static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
{
u32 tfms, xlvl;
@ -395,8 +425,8 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
}
init_scattered_cpuid_features(c);
detect_nopl(c);
}
}
static void __cpuinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c)
@ -709,9 +739,20 @@ void __cpuinit cpu_init(void)
/*
* Force FPU initialization:
*/
current_thread_info()->status = 0;
if (cpu_has_xsave)
current_thread_info()->status = TS_XSAVE;
else
current_thread_info()->status = 0;
clear_used_math();
mxcsr_feature_mask_init();
/*
* Boot processor to setup the FP and extended state context info.
*/
if (!smp_processor_id())
init_thread_xstate();
xsave_init();
}
#ifdef CONFIG_HOTPLUG_CPU

38
arch/x86/kernel/cpu/common_64.c
View File

@ -18,6 +18,7 @@
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/pat.h>
#include <asm/asm.h>
#include <asm/numa.h>
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/mpspec.h>
@ -215,6 +216,39 @@ static void __init early_cpu_support_print(void)
}
}
/*
* The NOPL instruction is supposed to exist on all CPUs with
* family >= 6, unfortunately, that's not true in practice because
* of early VIA chips and (more importantly) broken virtualizers that
* are not easy to detect. Hence, probe for it based on first
* principles.
*
* Note: no 64-bit chip is known to lack these, but put the code here
* for consistency with 32 bits, and to make it utterly trivial to
* diagnose the problem should it ever surface.
*/
static void __cpuinit detect_nopl(struct cpuinfo_x86 *c)
{
const u32 nopl_signature = 0x888c53b1; /* Random number */
u32 has_nopl = nopl_signature;
clear_cpu_cap(c, X86_FEATURE_NOPL);
if (c->x86 >= 6) {
asm volatile("\n"
"1: .byte 0x0f,0x1f,0xc0\n" /* nopl %eax */
"2:\n"
" .section .fixup,\"ax\"\n"
"3: xor %0,%0\n"
" jmp 2b\n"
" .previous\n"
_ASM_EXTABLE(1b,3b)
: "+a" (has_nopl));
if (has_nopl == nopl_signature)
set_cpu_cap(c, X86_FEATURE_NOPL);
}
}
static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c);
void __init early_cpu_init(void)
@ -313,6 +347,8 @@ static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
c->x86_phys_bits = eax & 0xff;
}
detect_nopl(c);
if (c->x86_vendor != X86_VENDOR_UNKNOWN &&
cpu_devs[c->x86_vendor]->c_early_init)
cpu_devs[c->x86_vendor]->c_early_init(c);
@ -597,6 +633,8 @@ void __cpuinit cpu_init(void)
barrier();
check_efer();
if (cpu != 0 && x2apic)
enable_x2apic();
/*
* set up and load the per-CPU TSS

16
arch/x86/kernel/cpu/cyrix.c
View File

@ -116,7 +116,7 @@ static void __cpuinit set_cx86_reorder(void)
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
/* Load/Store Serialize to mem access disable (=reorder it) */
setCx86(CX86_PCR0, getCx86(CX86_PCR0) & ~0x80);
setCx86_old(CX86_PCR0, getCx86_old(CX86_PCR0) & ~0x80);
/* set load/store serialize from 1GB to 4GB */
ccr3 |= 0xe0;
setCx86(CX86_CCR3, ccr3);
@ -127,11 +127,11 @@ static void __cpuinit set_cx86_memwb(void)
printk(KERN_INFO "Enable Memory-Write-back mode on Cyrix/NSC processor.\n");
/* CCR2 bit 2: unlock NW bit */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) & ~0x04);
setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) & ~0x04);
/* set 'Not Write-through' */
write_cr0(read_cr0() | X86_CR0_NW);
/* CCR2 bit 2: lock NW bit and set WT1 */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x14);
setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) | 0x14);
}
/*
@ -145,14 +145,14 @@ static void __cpuinit geode_configure(void)
local_irq_save(flags);
/* Suspend on halt power saving and enable #SUSP pin */
setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88);
setCx86_old(CX86_CCR2, getCx86_old(CX86_CCR2) | 0x88);
ccr3 = getCx86(CX86_CCR3);
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
/* FPU fast, DTE cache, Mem bypass */
setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x38);
setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x38);
setCx86(CX86_CCR3, ccr3); /* disable MAPEN */
set_cx86_memwb();
@ -268,7 +268,7 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
/* GXm supports extended cpuid levels 'ala' AMD */
if (c->cpuid_level == 2) {
/* Enable cxMMX extensions (GX1 Datasheet 54) */
setCx86(CX86_CCR7, getCx86(CX86_CCR7) | 1);
setCx86_old(CX86_CCR7, getCx86_old(CX86_CCR7) | 1);
/*
* GXm : 0x30 ... 0x5f GXm datasheet 51
@ -291,7 +291,7 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
if (dir1 > 7) {
dir0_msn++; /* M II */
/* Enable MMX extensions (App note 108) */
setCx86(CX86_CCR7, getCx86(CX86_CCR7)|1);
setCx86_old(CX86_CCR7, getCx86_old(CX86_CCR7)|1);
} else {
c->coma_bug = 1; /* 6x86MX, it has the bug. */
}
@ -406,7 +406,7 @@ static void __cpuinit cyrix_identify(struct cpuinfo_x86 *c)
local_irq_save(flags);
ccr3 = getCx86(CX86_CCR3);
setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10); /* enable MAPEN */
setCx86(CX86_CCR4, getCx86(CX86_CCR4) | 0x80); /* enable cpuid */
setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x80); /* enable cpuid */
setCx86(CX86_CCR3, ccr3); /* disable MAPEN */
local_irq_restore(flags);
}

83
arch/x86/kernel/cpu/feature_names.c
View File

@ -1,83 +0,0 @@
/*
* Strings for the various x86 capability flags.
*
* This file must not contain any executable code.
*/
#include <asm/cpufeature.h>
/*
* These flag bits must match the definitions in <asm/cpufeature.h>.
* NULL means this bit is undefined or reserved; either way it doesn't
* have meaning as far as Linux is concerned. Note that it's important
* to realize there is a difference between this table and CPUID -- if
* applications want to get the raw CPUID data, they should access
* /dev/cpu/<cpu_nr>/cpuid instead.
*/
const char * const x86_cap_flags[NCAPINTS*32] = {
/* Intel-defined */
"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
"fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
/* AMD-defined */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL,
NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
"3dnowext", "3dnow",
/* Transmeta-defined */
"recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Other (Linux-defined) */
"cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
NULL, NULL, NULL, NULL,
"constant_tsc", "up", NULL, "arch_perfmon",
"pebs", "bts", NULL, NULL,
"rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
"ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
"lahf_lm", "cmp_legacy", "svm", "extapic",
"cr8_legacy", "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "sse5",
"skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* Auxiliary (Linux-defined) */
"ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
const char *const x86_power_flags[32] = {
"ts", /* temperature sensor */
"fid", /* frequency id control */
"vid", /* voltage id control */
"ttp", /* thermal trip */
"tm",
"stc",
"100mhzsteps",
"hwpstate",
"", /* tsc invariant mapped to constant_tsc */
/* nothing */
};

71
arch/x86/kernel/cpu/intel.c
View File

@ -23,13 +23,6 @@
#include <mach_apic.h>
#endif
#ifdef CONFIG_X86_INTEL_USERCOPY
/*
* Alignment at which movsl is preferred for bulk memory copies.
*/
struct movsl_mask movsl_mask __read_mostly;
#endif
static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
{
/* Netburst reports 64 bytes clflush size, but does IO in 128 bytes */
@ -314,69 +307,5 @@ static struct cpu_dev intel_cpu_dev __cpuinitdata = {
cpu_vendor_dev_register(X86_VENDOR_INTEL, &intel_cpu_dev);
#ifndef CONFIG_X86_CMPXCHG
unsigned long cmpxchg_386_u8(volatile void *ptr, u8 old, u8 new)
{
u8 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u8 *)ptr;
if (prev == old)
*(u8 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u8);
unsigned long cmpxchg_386_u16(volatile void *ptr, u16 old, u16 new)
{
u16 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u16 *)ptr;
if (prev == old)
*(u16 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u16);
unsigned long cmpxchg_386_u32(volatile void *ptr, u32 old, u32 new)
{
u32 prev;
unsigned long flags;
/* Poor man's cmpxchg for 386. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u32 *)ptr;
if (prev == old)
*(u32 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_386_u32);
#endif
#ifndef CONFIG_X86_CMPXCHG64
unsigned long long cmpxchg_486_u64(volatile void *ptr, u64 old, u64 new)
{
u64 prev;
unsigned long flags;
/* Poor man's cmpxchg8b for 386 and 486. Unsuitable for SMP */
local_irq_save(flags);
prev = *(u64 *)ptr;
if (prev == old)
*(u64 *)ptr = new;
local_irq_restore(flags);
return prev;
}
EXPORT_SYMBOL(cmpxchg_486_u64);
#endif
/* arch_initcall(intel_cpu_init); */

169
arch/x86/kernel/cpu/intel_cacheinfo.c
View File

@ -1,8 +1,8 @@
/*
* Routines to indentify caches on Intel CPU.
* Routines to indentify caches on Intel CPU.
*
* Changes:
* Venkatesh Pallipadi : Adding cache identification through cpuid(4)
* Changes:
* Venkatesh Pallipadi : Adding cache identification through cpuid(4)
* Ashok Raj <ashok.raj@intel.com>: Work with CPU hotplug infrastructure.
* Andi Kleen / Andreas Herrmann : CPUID4 emulation on AMD.
*/
@ -13,6 +13,7 @@
#include <linux/compiler.h>
#include <linux/cpu.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <asm/processor.h>
#include <asm/smp.h>
@ -130,9 +131,18 @@ struct _cpuid4_info {
union _cpuid4_leaf_ebx ebx;
union _cpuid4_leaf_ecx ecx;
unsigned long size;
unsigned long can_disable;
cpumask_t shared_cpu_map; /* future?: only cpus/node is needed */
};
#ifdef CONFIG_PCI
static struct pci_device_id k8_nb_id[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1103) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1203) },
{}
};
#endif
unsigned short num_cache_leaves;
/* AMD doesn't have CPUID4. Emulate it here to report the same
@ -182,9 +192,10 @@ static unsigned short assocs[] __cpuinitdata = {
static unsigned char levels[] __cpuinitdata = { 1, 1, 2, 3 };
static unsigned char types[] __cpuinitdata = { 1, 2, 3, 3 };
static void __cpuinit amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
union _cpuid4_leaf_ebx *ebx,
union _cpuid4_leaf_ecx *ecx)
static void __cpuinit
amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
union _cpuid4_leaf_ebx *ebx,
union _cpuid4_leaf_ecx *ecx)
{
unsigned dummy;
unsigned line_size, lines_per_tag, assoc, size_in_kb;
@ -251,27 +262,40 @@ static void __cpuinit amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
(ebx->split.ways_of_associativity + 1) - 1;
}
static int __cpuinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_leaf)
static void __cpuinit
amd_check_l3_disable(int index, struct _cpuid4_info *this_leaf)
{
if (index < 3)
return;
this_leaf->can_disable = 1;
}
static int
__cpuinit cpuid4_cache_lookup(int index, struct _cpuid4_info *this_leaf)
{
union _cpuid4_leaf_eax eax;
union _cpuid4_leaf_ebx ebx;
union _cpuid4_leaf_ecx ecx;
unsigned edx;
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
amd_cpuid4(index, &eax, &ebx, &ecx);
else
cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
if (boot_cpu_data.x86 >= 0x10)
amd_check_l3_disable(index, this_leaf);
} else {
cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
}
if (eax.split.type == CACHE_TYPE_NULL)
return -EIO; /* better error ? */
this_leaf->eax = eax;
this_leaf->ebx = ebx;
this_leaf->ecx = ecx;
this_leaf->size = (ecx.split.number_of_sets + 1) *
(ebx.split.coherency_line_size + 1) *
(ebx.split.physical_line_partition + 1) *
(ebx.split.ways_of_associativity + 1);
this_leaf->size = (ecx.split.number_of_sets + 1) *
(ebx.split.coherency_line_size + 1) *
(ebx.split.physical_line_partition + 1) *
(ebx.split.ways_of_associativity + 1);
return 0;
}
@ -453,7 +477,7 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
/* pointer to _cpuid4_info array (for each cache leaf) */
static DEFINE_PER_CPU(struct _cpuid4_info *, cpuid4_info);
#define CPUID4_INFO_IDX(x, y) (&((per_cpu(cpuid4_info, x))[y]))
#define CPUID4_INFO_IDX(x, y) (&((per_cpu(cpuid4_info, x))[y]))
#ifdef CONFIG_SMP
static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
@ -490,7 +514,7 @@ static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index)
this_leaf = CPUID4_INFO_IDX(cpu, index);
for_each_cpu_mask_nr(sibling, this_leaf->shared_cpu_map) {
sibling_leaf = CPUID4_INFO_IDX(sibling, index);
sibling_leaf = CPUID4_INFO_IDX(sibling, index);
cpu_clear(cpu, sibling_leaf->shared_cpu_map);
}
}
@ -572,7 +596,7 @@ struct _index_kobject {
/* pointer to array of kobjects for cpuX/cache/indexY */
static DEFINE_PER_CPU(struct _index_kobject *, index_kobject);
#define INDEX_KOBJECT_PTR(x, y) (&((per_cpu(index_kobject, x))[y]))
#define INDEX_KOBJECT_PTR(x, y) (&((per_cpu(index_kobject, x))[y]))
#define show_one_plus(file_name, object, val) \
static ssize_t show_##file_name \
@ -637,6 +661,99 @@ static ssize_t show_type(struct _cpuid4_info *this_leaf, char *buf) {
}
}
#define to_object(k) container_of(k, struct _index_kobject, kobj)
#define to_attr(a) container_of(a, struct _cache_attr, attr)
#ifdef CONFIG_PCI
static struct pci_dev *get_k8_northbridge(int node)
{
struct pci_dev *dev = NULL;
int i;
for (i = 0; i <= node; i++) {
do {
dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
if (!dev)
break;
} while (!pci_match_id(&k8_nb_id[0], dev));
if (!dev)
break;
}
return dev;
}
#else
static struct pci_dev *get_k8_northbridge(int node)
{
return NULL;
}
#endif
static ssize_t show_cache_disable(struct _cpuid4_info *this_leaf, char *buf)
{
int node = cpu_to_node(first_cpu(this_leaf->shared_cpu_map));
struct pci_dev *dev = NULL;
ssize_t ret = 0;
int i;
if (!this_leaf->can_disable)
return sprintf(buf, "Feature not enabled\n");
dev = get_k8_northbridge(node);
if (!dev) {
printk(KERN_ERR "Attempting AMD northbridge operation on a system with no northbridge\n");
return -EINVAL;
}
for (i = 0; i < 2; i++) {
unsigned int reg;
pci_read_config_dword(dev, 0x1BC + i * 4, &reg);
ret += sprintf(buf, "%sEntry: %d\n", buf, i);
ret += sprintf(buf, "%sReads: %s\tNew Entries: %s\n",
buf,
reg & 0x80000000 ? "Disabled" : "Allowed",
reg & 0x40000000 ? "Disabled" : "Allowed");
ret += sprintf(buf, "%sSubCache: %x\tIndex: %x\n",
buf, (reg & 0x30000) >> 16, reg & 0xfff);
}
return ret;
}
static ssize_t
store_cache_disable(struct _cpuid4_info *this_leaf, const char *buf,
size_t count)
{
int node = cpu_to_node(first_cpu(this_leaf->shared_cpu_map));
struct pci_dev *dev = NULL;
unsigned int ret, index, val;
if (!this_leaf->can_disable)
return 0;
if (strlen(buf) > 15)
return -EINVAL;
ret = sscanf(buf, "%x %x", &index, &val);
if (ret != 2)
return -EINVAL;
if (index > 1)
return -EINVAL;
val |= 0xc0000000;
dev = get_k8_northbridge(node);
if (!dev) {
printk(KERN_ERR "Attempting AMD northbridge operation on a system with no northbridge\n");
return -EINVAL;
}
pci_write_config_dword(dev, 0x1BC + index * 4, val & ~0x40000000);
wbinvd();
pci_write_config_dword(dev, 0x1BC + index * 4, val);
return 1;
}
struct _cache_attr {
struct attribute attr;
ssize_t (*show)(struct _cpuid4_info *, char *);
@ -657,6 +774,8 @@ define_one_ro(size);
define_one_ro(shared_cpu_map);
define_one_ro(shared_cpu_list);
static struct _cache_attr cache_disable = __ATTR(cache_disable, 0644, show_cache_disable, store_cache_disable);
static struct attribute * default_attrs[] = {
&type.attr,
&level.attr,
@ -667,12 +786,10 @@ static struct attribute * default_attrs[] = {
&size.attr,
&shared_cpu_map.attr,
&shared_cpu_list.attr,
&cache_disable.attr,
NULL
};
#define to_object(k) container_of(k, struct _index_kobject, kobj)
#define to_attr(a) container_of(a, struct _cache_attr, attr)
static ssize_t show(struct kobject * kobj, struct attribute * attr, char * buf)
{
struct _cache_attr *fattr = to_attr(attr);
@ -682,14 +799,22 @@ static ssize_t show(struct kobject * kobj, struct attribute * attr, char * buf)
ret = fattr->show ?
fattr->show(CPUID4_INFO_IDX(this_leaf->cpu, this_leaf->index),
buf) :
0;
0;
return ret;
}
static ssize_t store(struct kobject * kobj, struct attribute * attr,
const char * buf, size_t count)
{
return 0;
struct _cache_attr *fattr = to_attr(attr);
struct _index_kobject *this_leaf = to_object(kobj);
ssize_t ret;
ret = fattr->store ?
fattr->store(CPUID4_INFO_IDX(this_leaf->cpu, this_leaf->index),
buf, count) :
0;
return ret;
}
static struct sysfs_ops sysfs_ops = {

32
arch/x86/kernel/cpu/mkcapflags.pl Normal file
View File

@ -0,0 +1,32 @@
#!/usr/bin/perl
#
# Generate the x86_cap_flags[] array from include/asm-x86/cpufeature.h
#
($in, $out) = @ARGV;
open(IN, "< $in\0") or die "$0: cannot open: $in: $!\n";
open(OUT, "> $out\0") or die "$0: cannot create: $out: $!\n";
print OUT "#include <asm/cpufeature.h>\n\n";
print OUT "const char * const x86_cap_flags[NCAPINTS*32] = {\n";
while (defined($line = <IN>)) {
if ($line =~ /^\s*\#\s*define\s+(X86_FEATURE_(\S+))\s+(.*)$/) {
$macro = $1;
$feature = $2;
$tail = $3;
if ($tail =~ /\/\*\s*\"([^"]*)\".*\*\//) {
$feature = $1;
}
if ($feature ne '') {
printf OUT "\t%-32s = \"%s\",\n",
"[$macro]", "\L$feature";
}
}
}
print OUT "};\n";
close(IN);
close(OUT);

2
arch/x86/kernel/cpu/mtrr/main.c
View File

@ -729,7 +729,7 @@ struct var_mtrr_range_state {
mtrr_type type;
};
struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
static struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
static int __initdata debug_print;
static int __init

20
arch/x86/kernel/cpu/powerflags.c Normal file
View File

@ -0,0 +1,20 @@
/*
* Strings for the various x86 power flags
*
* This file must not contain any executable code.
*/
#include <asm/cpufeature.h>
const char *const x86_power_flags[32] = {
"ts", /* temperature sensor */
"fid", /* frequency id control */
"vid", /* voltage id control */
"ttp", /* thermal trip */
"tm",
"stc",
"100mhzsteps",
"hwpstate",
"", /* tsc invariant mapped to constant_tsc */
/* nothing */
};

88
arch/x86/kernel/genapic_64.c
View File

@ -16,87 +16,63 @@
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/hardirq.h>
#include <linux/dmar.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
#ifdef CONFIG_ACPI
#include <acpi/acpi_bus.h>
#endif
DEFINE_PER_CPU(int, x2apic_extra_bits);
extern struct genapic apic_flat;
extern struct genapic apic_physflat;
extern struct genapic apic_x2xpic_uv_x;
extern struct genapic apic_x2apic_phys;
extern struct genapic apic_x2apic_cluster;
struct genapic __read_mostly *genapic = &apic_flat;
static enum uv_system_type uv_system_type;
static struct genapic *apic_probe[] __initdata = {
&apic_x2apic_uv_x,
&apic_x2apic_phys,
&apic_x2apic_cluster,
&apic_physflat,
NULL,
};
/*
* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
*/
void __init setup_apic_routing(void)
{
if (uv_system_type == UV_NON_UNIQUE_APIC)
genapic = &apic_x2apic_uv_x;
else
#ifdef CONFIG_ACPI
/*
* Quirk: some x86_64 machines can only use physical APIC mode
* regardless of how many processors are present (x86_64 ES7000
* is an example).
*/
if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL))
genapic = &apic_physflat;
else
#endif
if (genapic == &apic_x2apic_phys || genapic == &apic_x2apic_cluster) {
if (!intr_remapping_enabled)
genapic = &apic_flat;
}
if (max_physical_apicid < 8)
genapic = &apic_flat;
else
genapic = &apic_physflat;
printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
if (genapic == &apic_flat) {
if (max_physical_apicid >= 8)
genapic = &apic_physflat;
printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
}
}
/* Same for both flat and physical. */
void send_IPI_self(int vector)
void apic_send_IPI_self(int vector)
{
__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
}
int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (!strcmp(oem_id, "SGI")) {
if (!strcmp(oem_table_id, "UVL"))
uv_system_type = UV_LEGACY_APIC;
else if (!strcmp(oem_table_id, "UVX"))
uv_system_type = UV_X2APIC;
else if (!strcmp(oem_table_id, "UVH"))
uv_system_type = UV_NON_UNIQUE_APIC;
int i;
for (i = 0; apic_probe[i]; ++i) {
if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) {
genapic = apic_probe[i];
printk(KERN_INFO "Setting APIC routing to %s.\n",
genapic->name);
return 1;
}
}
return 0;
}
unsigned int read_apic_id(void)
{
unsigned int id;
WARN_ON(preemptible() && num_online_cpus() > 1);
id = apic_read(APIC_ID);
if (uv_system_type >= UV_X2APIC)
id |= __get_cpu_var(x2apic_extra_bits);
return id;
}
enum uv_system_type get_uv_system_type(void)
{
return uv_system_type;
}
int is_uv_system(void)
{
return uv_system_type != UV_NONE;
}
EXPORT_SYMBOL_GPL(is_uv_system);

62
arch/x86/kernel/genapic_flat_64.c
View File

@ -15,9 +15,20 @@
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/hardirq.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
#include <mach_apicdef.h>
#ifdef CONFIG_ACPI
#include <acpi/acpi_bus.h>
#endif
static int __init flat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
return 1;
}
static cpumask_t flat_target_cpus(void)
{
@ -95,9 +106,33 @@ static void flat_send_IPI_all(int vector)
__send_IPI_shortcut(APIC_DEST_ALLINC, vector, APIC_DEST_LOGICAL);
}
static unsigned int get_apic_id(unsigned long x)
{
unsigned int id;
id = (((x)>>24) & 0xFFu);
return id;
}
static unsigned long set_apic_id(unsigned int id)
{
unsigned long x;
x = ((id & 0xFFu)<<24);
return x;
}
static unsigned int read_xapic_id(void)
{
unsigned int id;
id = get_apic_id(apic_read(APIC_ID));
return id;
}
static int flat_apic_id_registered(void)
{
return physid_isset(GET_APIC_ID(read_apic_id()), phys_cpu_present_map);
return physid_isset(read_xapic_id(), phys_cpu_present_map);
}
static unsigned int flat_cpu_mask_to_apicid(cpumask_t cpumask)
@ -112,6 +147,7 @@ static unsigned int phys_pkg_id(int index_msb)
struct genapic apic_flat = {
.name = "flat",
.acpi_madt_oem_check = flat_acpi_madt_oem_check,
.int_delivery_mode = dest_LowestPrio,
.int_dest_mode = (APIC_DEST_LOGICAL != 0),
.target_cpus = flat_target_cpus,
@ -121,8 +157,12 @@ struct genapic apic_flat = {
.send_IPI_all = flat_send_IPI_all,
.send_IPI_allbutself = flat_send_IPI_allbutself,
.send_IPI_mask = flat_send_IPI_mask,
.send_IPI_self = apic_send_IPI_self,
.cpu_mask_to_apicid = flat_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
.get_apic_id = get_apic_id,
.set_apic_id = set_apic_id,
.apic_id_mask = (0xFFu<<24),
};
/*
@ -130,6 +170,21 @@ struct genapic apic_flat = {
* We cannot use logical delivery in this case because the mask
* overflows, so use physical mode.
*/
static int __init physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
#ifdef CONFIG_ACPI
/*
* Quirk: some x86_64 machines can only use physical APIC mode
* regardless of how many processors are present (x86_64 ES7000
* is an example).
*/
if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL))
return 1;
#endif
return 0;
}
static cpumask_t physflat_target_cpus(void)
{
@ -176,6 +231,7 @@ static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask)
struct genapic apic_physflat = {
.name = "physical flat",
.acpi_madt_oem_check = physflat_acpi_madt_oem_check,
.int_delivery_mode = dest_Fixed,
.int_dest_mode = (APIC_DEST_PHYSICAL != 0),
.target_cpus = physflat_target_cpus,
@ -185,6 +241,10 @@ struct genapic apic_physflat = {
.send_IPI_all = physflat_send_IPI_all,
.send_IPI_allbutself = physflat_send_IPI_allbutself,
.send_IPI_mask = physflat_send_IPI_mask,
.send_IPI_self = apic_send_IPI_self,
.cpu_mask_to_apicid = physflat_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
.get_apic_id = get_apic_id,
.set_apic_id = set_apic_id,
.apic_id_mask = (0xFFu<<24),
};

164
arch/x86/kernel/genx2apic_cluster.c Normal file
View File

@ -0,0 +1,164 @@
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/dmar.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
DEFINE_PER_CPU(u32, x86_cpu_to_logical_apicid);
static int __init x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (cpu_has_x2apic)
return 1;
return 0;
}
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
static cpumask_t x2apic_target_cpus(void)
{
return cpumask_of_cpu(0);
}
/*
* for now each logical cpu is in its own vector allocation domain.
*/
static cpumask_t x2apic_vector_allocation_domain(int cpu)
{
cpumask_t domain = CPU_MASK_NONE;
cpu_set(cpu, domain);
return domain;
}
static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
unsigned int dest)
{
unsigned long cfg;
cfg = __prepare_ICR(0, vector, dest);
/*
* send the IPI.
*/
x2apic_icr_write(cfg, apicid);
}
/*
* for now, we send the IPI's one by one in the cpumask.
* TBD: Based on the cpu mask, we can send the IPI's to the cluster group
* at once. We have 16 cpu's in a cluster. This will minimize IPI register
* writes.
*/
static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
{
unsigned long flags;
unsigned long query_cpu;
local_irq_save(flags);
for_each_cpu_mask(query_cpu, mask) {
__x2apic_send_IPI_dest(per_cpu(x86_cpu_to_logical_apicid, query_cpu),
vector, APIC_DEST_LOGICAL);
}
local_irq_restore(flags);
}
static void x2apic_send_IPI_allbutself(int vector)
{
cpumask_t mask = cpu_online_map;
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
x2apic_send_IPI_mask(mask, vector);
}
static void x2apic_send_IPI_all(int vector)
{
x2apic_send_IPI_mask(cpu_online_map, vector);
}
static int x2apic_apic_id_registered(void)
{
return 1;
}
static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
{
int cpu;
/*
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
cpu = first_cpu(cpumask);
if ((unsigned)cpu < NR_CPUS)
return per_cpu(x86_cpu_to_logical_apicid, cpu);
else
return BAD_APICID;
}
static unsigned int get_apic_id(unsigned long x)
{
unsigned int id;
id = x;
return id;
}
static unsigned long set_apic_id(unsigned int id)
{
unsigned long x;
x = id;
return x;
}
static unsigned int x2apic_read_id(void)
{
return apic_read(APIC_ID);
}
static unsigned int phys_pkg_id(int index_msb)
{
return x2apic_read_id() >> index_msb;
}
static void x2apic_send_IPI_self(int vector)
{
apic_write(APIC_SELF_IPI, vector);
}
static void init_x2apic_ldr(void)
{
int cpu = smp_processor_id();
per_cpu(x86_cpu_to_logical_apicid, cpu) = apic_read(APIC_LDR);
return;
}
struct genapic apic_x2apic_cluster = {
.name = "cluster x2apic",
.acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
.int_delivery_mode = dest_LowestPrio,
.int_dest_mode = (APIC_DEST_LOGICAL != 0),
.target_cpus = x2apic_target_cpus,
.vector_allocation_domain = x2apic_vector_allocation_domain,
.apic_id_registered = x2apic_apic_id_registered,
.init_apic_ldr = init_x2apic_ldr,
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
.send_IPI_mask = x2apic_send_IPI_mask,
.send_IPI_self = x2apic_send_IPI_self,
.cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
.get_apic_id = get_apic_id,
.set_apic_id = set_apic_id,
.apic_id_mask = (0xFFFFFFFFu),
};

159
arch/x86/kernel/genx2apic_phys.c Normal file
View File

@ -0,0 +1,159 @@
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/dmar.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
static int x2apic_phys;
static int set_x2apic_phys_mode(char *arg)
{
x2apic_phys = 1;
return 0;
}
early_param("x2apic_phys", set_x2apic_phys_mode);
static int __init x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (cpu_has_x2apic && x2apic_phys)
return 1;
return 0;
}
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
static cpumask_t x2apic_target_cpus(void)
{
return cpumask_of_cpu(0);
}
static cpumask_t x2apic_vector_allocation_domain(int cpu)
{
cpumask_t domain = CPU_MASK_NONE;
cpu_set(cpu, domain);
return domain;
}
static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
unsigned int dest)
{
unsigned long cfg;
cfg = __prepare_ICR(0, vector, dest);
/*
* send the IPI.
*/
x2apic_icr_write(cfg, apicid);
}
static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
{
unsigned long flags;
unsigned long query_cpu;
local_irq_save(flags);
for_each_cpu_mask(query_cpu, mask) {
__x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
vector, APIC_DEST_PHYSICAL);
}
local_irq_restore(flags);
}
static void x2apic_send_IPI_allbutself(int vector)
{
cpumask_t mask = cpu_online_map;
cpu_clear(smp_processor_id(), mask);
if (!cpus_empty(mask))
x2apic_send_IPI_mask(mask, vector);
}
static void x2apic_send_IPI_all(int vector)
{
x2apic_send_IPI_mask(cpu_online_map, vector);
}
static int x2apic_apic_id_registered(void)
{
return 1;
}
static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
{
int cpu;
/*
* We're using fixed IRQ delivery, can only return one phys APIC ID.
* May as well be the first.
*/
cpu = first_cpu(cpumask);
if ((unsigned)cpu < NR_CPUS)
return per_cpu(x86_cpu_to_apicid, cpu);
else
return BAD_APICID;
}
static unsigned int get_apic_id(unsigned long x)
{
unsigned int id;
id = x;
return id;
}
static unsigned long set_apic_id(unsigned int id)
{
unsigned long x;
x = id;
return x;
}
static unsigned int x2apic_read_id(void)
{
return apic_read(APIC_ID);
}
static unsigned int phys_pkg_id(int index_msb)
{
return x2apic_read_id() >> index_msb;
}
void x2apic_send_IPI_self(int vector)
{
apic_write(APIC_SELF_IPI, vector);
}
void init_x2apic_ldr(void)
{
return;
}
struct genapic apic_x2apic_phys = {
.name = "physical x2apic",
.acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
.int_delivery_mode = dest_Fixed,
.int_dest_mode = (APIC_DEST_PHYSICAL != 0),
.target_cpus = x2apic_target_cpus,
.vector_allocation_domain = x2apic_vector_allocation_domain,
.apic_id_registered = x2apic_apic_id_registered,
.init_apic_ldr = init_x2apic_ldr,
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
.send_IPI_mask = x2apic_send_IPI_mask,
.send_IPI_self = x2apic_send_IPI_self,
.cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id,
.get_apic_id = get_apic_id,
.set_apic_id = set_apic_id,
.apic_id_mask = (0xFFFFFFFFu),
};

69
arch/x86/kernel/genx2apic_uv_x.c
View File

@ -12,12 +12,12 @@
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <linux/module.h>
#include <linux/hardirq.h>
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
@ -26,6 +26,35 @@
#include <asm/uv/uv_hub.h>
#include <asm/uv/bios.h>
DEFINE_PER_CPU(int, x2apic_extra_bits);
static enum uv_system_type uv_system_type;
static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (!strcmp(oem_id, "SGI")) {
if (!strcmp(oem_table_id, "UVL"))
uv_system_type = UV_LEGACY_APIC;
else if (!strcmp(oem_table_id, "UVX"))
uv_system_type = UV_X2APIC;
else if (!strcmp(oem_table_id, "UVH")) {
uv_system_type = UV_NON_UNIQUE_APIC;
return 1;
}
}
return 0;
}
enum uv_system_type get_uv_system_type(void)
{
return uv_system_type;
}
int is_uv_system(void)
{
return uv_system_type != UV_NONE;
}
DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
@ -123,6 +152,10 @@ static int uv_apic_id_registered(void)
return 1;
}
static void uv_init_apic_ldr(void)
{
}
static unsigned int uv_cpu_mask_to_apicid(cpumask_t cpumask)
{
int cpu;
@ -138,9 +171,34 @@ static unsigned int uv_cpu_mask_to_apicid(cpumask_t cpumask)
return BAD_APICID;
}
static unsigned int get_apic_id(unsigned long x)
{
unsigned int id;
WARN_ON(preemptible() && num_online_cpus() > 1);
id = x | __get_cpu_var(x2apic_extra_bits);
return id;
}
static unsigned long set_apic_id(unsigned int id)
{
unsigned long x;
/* maskout x2apic_extra_bits ? */
x = id;
return x;
}
static unsigned int uv_read_apic_id(void)
{
return get_apic_id(apic_read(APIC_ID));
}
static unsigned int phys_pkg_id(int index_msb)
{
return GET_APIC_ID(read_apic_id()) >> index_msb;
return uv_read_apic_id() >> index_msb;
}
#ifdef ZZZ /* Needs x2apic patch */
@ -152,17 +210,22 @@ static void uv_send_IPI_self(int vector)
struct genapic apic_x2apic_uv_x = {
.name = "UV large system",
.acpi_madt_oem_check = uv_acpi_madt_oem_check,
.int_delivery_mode = dest_Fixed,
.int_dest_mode = (APIC_DEST_PHYSICAL != 0),
.target_cpus = uv_target_cpus,
.vector_allocation_domain = uv_vector_allocation_domain,/* Fixme ZZZ */
.apic_id_registered = uv_apic_id_registered,
.init_apic_ldr = uv_init_apic_ldr,
.send_IPI_all = uv_send_IPI_all,
.send_IPI_allbutself = uv_send_IPI_allbutself,
.send_IPI_mask = uv_send_IPI_mask,
/* ZZZ.send_IPI_self = uv_send_IPI_self, */
.cpu_mask_to_apicid = uv_cpu_mask_to_apicid,
.phys_pkg_id = phys_pkg_id, /* Fixme ZZZ */
.get_apic_id = get_apic_id,
.set_apic_id = set_apic_id,
.apic_id_mask = (0xFFFFFFFFu),
};
static __cpuinit void set_x2apic_extra_bits(int pnode)
@ -401,3 +464,5 @@ void __cpuinit uv_cpu_init(void)
if (get_uv_system_type() == UV_NON_UNIQUE_APIC)
set_x2apic_extra_bits(uv_hub_info->pnode);
}

154
arch/x86/kernel/i387.c
View File

@ -21,9 +21,12 @@
# include <asm/sigcontext32.h>
# include <asm/user32.h>
#else
# define save_i387_ia32 save_i387
# define restore_i387_ia32 restore_i387
# define save_i387_xstate_ia32 save_i387_xstate
# define restore_i387_xstate_ia32 restore_i387_xstate
# define _fpstate_ia32 _fpstate
# define _xstate_ia32 _xstate
# define sig_xstate_ia32_size sig_xstate_size
# define fx_sw_reserved_ia32 fx_sw_reserved
# define user_i387_ia32_struct user_i387_struct
# define user32_fxsr_struct user_fxsr_struct
#endif
@ -36,6 +39,7 @@
static unsigned int mxcsr_feature_mask __read_mostly = 0xffffffffu;
unsigned int xstate_size;
unsigned int sig_xstate_ia32_size = sizeof(struct _fpstate_ia32);
static struct i387_fxsave_struct fx_scratch __cpuinitdata;
void __cpuinit mxcsr_feature_mask_init(void)
@ -61,6 +65,11 @@ void __init init_thread_xstate(void)
return;
}
if (cpu_has_xsave) {
xsave_cntxt_init();
return;
}
if (cpu_has_fxsr)
xstate_size = sizeof(struct i387_fxsave_struct);
#ifdef CONFIG_X86_32
@ -83,9 +92,19 @@ void __cpuinit fpu_init(void)
write_cr0(oldcr0 & ~(X86_CR0_TS|X86_CR0_EM)); /* clear TS and EM */
/*
* Boot processor to setup the FP and extended state context info.
*/
if (!smp_processor_id())
init_thread_xstate();
xsave_init();
mxcsr_feature_mask_init();
/* clean state in init */
current_thread_info()->status = 0;
if (cpu_has_xsave)
current_thread_info()->status = TS_XSAVE;
else
current_thread_info()->status = 0;
clear_used_math();
}
#endif /* CONFIG_X86_64 */
@ -195,6 +214,13 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset,
*/
target->thread.xstate->fxsave.mxcsr &= mxcsr_feature_mask;
/*
* update the header bits in the xsave header, indicating the
* presence of FP and SSE state.
*/
if (cpu_has_xsave)
target->thread.xstate->xsave.xsave_hdr.xstate_bv |= XSTATE_FPSSE;
return ret;
}
@ -395,6 +421,12 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset,
if (!ret)
convert_to_fxsr(target, &env);
/*
* update the header bit in the xsave header, indicating the
* presence of FP.
*/
if (cpu_has_xsave)
target->thread.xstate->xsave.xsave_hdr.xstate_bv |= XSTATE_FP;
return ret;
}
@ -407,7 +439,6 @@ static inline int save_i387_fsave(struct _fpstate_ia32 __user *buf)
struct task_struct *tsk = current;
struct i387_fsave_struct *fp = &tsk->thread.xstate->fsave;
unlazy_fpu(tsk);
fp->status = fp->swd;
if (__copy_to_user(buf, fp, sizeof(struct i387_fsave_struct)))
return -1;
@ -421,8 +452,6 @@ static int save_i387_fxsave(struct _fpstate_ia32 __user *buf)
struct user_i387_ia32_struct env;
int err = 0;
unlazy_fpu(tsk);
convert_from_fxsr(&env, tsk);
if (__copy_to_user(buf, &env, sizeof(env)))
return -1;
@ -432,16 +461,40 @@ static int save_i387_fxsave(struct _fpstate_ia32 __user *buf)
if (err)
return -1;
if (__copy_to_user(&buf->_fxsr_env[0], fx,
sizeof(struct i387_fxsave_struct)))
if (__copy_to_user(&buf->_fxsr_env[0], fx, xstate_size))
return -1;
return 1;
}
int save_i387_ia32(struct _fpstate_ia32 __user *buf)
static int save_i387_xsave(void __user *buf)
{
struct _fpstate_ia32 __user *fx = buf;
int err = 0;
if (save_i387_fxsave(fx) < 0)
return -1;
err = __copy_to_user(&fx->sw_reserved, &fx_sw_reserved_ia32,
sizeof(struct _fpx_sw_bytes));
err |= __put_user(FP_XSTATE_MAGIC2,
(__u32 __user *) (buf + sig_xstate_ia32_size
- FP_XSTATE_MAGIC2_SIZE));
if (err)
return -1;
return 1;
}
int save_i387_xstate_ia32(void __user *buf)
{
struct _fpstate_ia32 __user *fp = (struct _fpstate_ia32 __user *) buf;
struct task_struct *tsk = current;
if (!used_math())
return 0;
if (!access_ok(VERIFY_WRITE, buf, sig_xstate_ia32_size))
return -EACCES;
/*
* This will cause a "finit" to be triggered by the next
* attempted FPU operation by the 'current' process.
@ -451,13 +504,17 @@ int save_i387_ia32(struct _fpstate_ia32 __user *buf)
if (!HAVE_HWFP) {
return fpregs_soft_get(current, NULL,
0, sizeof(struct user_i387_ia32_struct),
NULL, buf) ? -1 : 1;
NULL, fp) ? -1 : 1;
}
unlazy_fpu(tsk);
if (cpu_has_xsave)
return save_i387_xsave(fp);
if (cpu_has_fxsr)
return save_i387_fxsave(buf);
return save_i387_fxsave(fp);
else
return save_i387_fsave(buf);
return save_i387_fsave(fp);
}
static inline int restore_i387_fsave(struct _fpstate_ia32 __user *buf)
@ -468,14 +525,15 @@ static inline int restore_i387_fsave(struct _fpstate_ia32 __user *buf)
sizeof(struct i387_fsave_struct));
}
static int restore_i387_fxsave(struct _fpstate_ia32 __user *buf)
static int restore_i387_fxsave(struct _fpstate_ia32 __user *buf,
unsigned int size)
{
struct task_struct *tsk = current;
struct user_i387_ia32_struct env;
int err;
err = __copy_from_user(&tsk->thread.xstate->fxsave, &buf->_fxsr_env[0],
sizeof(struct i387_fxsave_struct));
size);
/* mxcsr reserved bits must be masked to zero for security reasons */
tsk->thread.xstate->fxsave.mxcsr &= mxcsr_feature_mask;
if (err || __copy_from_user(&env, buf, sizeof(env)))
@ -485,14 +543,69 @@ static int restore_i387_fxsave(struct _fpstate_ia32 __user *buf)
return 0;
}
int restore_i387_ia32(struct _fpstate_ia32 __user *buf)
static int restore_i387_xsave(void __user *buf)
{
struct _fpx_sw_bytes fx_sw_user;
struct _fpstate_ia32 __user *fx_user =
((struct _fpstate_ia32 __user *) buf);
struct i387_fxsave_struct __user *fx =
(struct i387_fxsave_struct __user *) &fx_user->_fxsr_env[0];
struct xsave_hdr_struct *xsave_hdr =
&current->thread.xstate->xsave.xsave_hdr;
u64 mask;
int err;
if (check_for_xstate(fx, buf, &fx_sw_user))
goto fx_only;
mask = fx_sw_user.xstate_bv;
err = restore_i387_fxsave(buf, fx_sw_user.xstate_size);
xsave_hdr->xstate_bv &= pcntxt_mask;
/*
* These bits must be zero.
*/
xsave_hdr->reserved1[0] = xsave_hdr->reserved1[1] = 0;
/*
* Init the state that is not present in the memory layout
* and enabled by the OS.
*/
mask = ~(pcntxt_mask & ~mask);
xsave_hdr->xstate_bv &= mask;
return err;
fx_only:
/*
* Couldn't find the extended state information in the memory
* layout. Restore the FP/SSE and init the other extended state
* enabled by the OS.
*/
xsave_hdr->xstate_bv = XSTATE_FPSSE;
return restore_i387_fxsave(buf, sizeof(struct i387_fxsave_struct));
}
int restore_i387_xstate_ia32(void __user *buf)
{
int err;
struct task_struct *tsk = current;
struct _fpstate_ia32 __user *fp = (struct _fpstate_ia32 __user *) buf;
if (HAVE_HWFP)
clear_fpu(tsk);
if (!buf) {
if (used_math()) {
clear_fpu(tsk);
clear_used_math();
}
return 0;
} else
if (!access_ok(VERIFY_READ, buf, sig_xstate_ia32_size))
return -EACCES;
if (!used_math()) {
err = init_fpu(tsk);
if (err)
@ -500,14 +613,17 @@ int restore_i387_ia32(struct _fpstate_ia32 __user *buf)
}
if (HAVE_HWFP) {
if (cpu_has_fxsr)
err = restore_i387_fxsave(buf);
if (cpu_has_xsave)
err = restore_i387_xsave(buf);
else if (cpu_has_fxsr)
err = restore_i387_fxsave(fp, sizeof(struct
i387_fxsave_struct));
else
err = restore_i387_fsave(buf);
err = restore_i387_fsave(fp);
} else {
err = fpregs_soft_set(current, NULL,
0, sizeof(struct user_i387_ia32_struct),
NULL, buf) != 0;
NULL, fp) != 0;
}
set_used_math();

24
arch/x86/kernel/i8259.c
View File

@ -282,6 +282,30 @@ static int __init i8259A_init_sysfs(void)
device_initcall(i8259A_init_sysfs);
void mask_8259A(void)
{
unsigned long flags;
spin_lock_irqsave(&i8259A_lock, flags);
outb(0xff, PIC_MASTER_IMR); /* mask all of 8259A-1 */
outb(0xff, PIC_SLAVE_IMR); /* mask all of 8259A-2 */
spin_unlock_irqrestore(&i8259A_lock, flags);
}
void unmask_8259A(void)
{
unsigned long flags;
spin_lock_irqsave(&i8259A_lock, flags);
outb(cached_master_mask, PIC_MASTER_IMR); /* restore master IRQ mask */
outb(cached_slave_mask, PIC_SLAVE_IMR); /* restore slave IRQ mask */
spin_unlock_irqrestore(&i8259A_lock, flags);
}
void init_8259A(int auto_eoi)
{
unsigned long flags;

10
arch/x86/kernel/io_apic_32.c
View File

@ -46,6 +46,7 @@
#include <asm/nmi.h>
#include <asm/msidef.h>
#include <asm/hypertransport.h>
#include <asm/setup.h>
#include <mach_apic.h>
#include <mach_apicdef.h>
@ -1490,7 +1491,7 @@ void /*__init*/ print_local_APIC(void *dummy)
smp_processor_id(), hard_smp_processor_id());
v = apic_read(APIC_ID);
printk(KERN_INFO "... APIC ID: %08x (%01x)\n", v,
GET_APIC_ID(read_apic_id()));
GET_APIC_ID(v));
v = apic_read(APIC_LVR);
printk(KERN_INFO "... APIC VERSION: %08x\n", v);
ver = GET_APIC_VERSION(v);
@ -1698,8 +1699,7 @@ void disable_IO_APIC(void)
entry.dest_mode = 0; /* Physical */
entry.delivery_mode = dest_ExtINT; /* ExtInt */
entry.vector = 0;
entry.dest.physical.physical_dest =
GET_APIC_ID(read_apic_id());
entry.dest.physical.physical_dest = read_apic_id();
/*
* Add it to the IO-APIC irq-routing table:
@ -1725,10 +1725,8 @@ static void __init setup_ioapic_ids_from_mpc(void)
unsigned char old_id;
unsigned long flags;
#ifdef CONFIG_X86_NUMAQ
if (found_numaq)
if (x86_quirks->setup_ioapic_ids && x86_quirks->setup_ioapic_ids())
return;
#endif
/*
* Don't check I/O APIC IDs for xAPIC systems. They have

616
arch/x86/kernel/io_apic_64.c
View File

@ -37,6 +37,7 @@
#include <acpi/acpi_bus.h>
#endif
#include <linux/bootmem.h>
#include <linux/dmar.h>
#include <asm/idle.h>
#include <asm/io.h>
@ -49,6 +50,7 @@
#include <asm/nmi.h>
#include <asm/msidef.h>
#include <asm/hypertransport.h>
#include <asm/irq_remapping.h>
#include <mach_ipi.h>
#include <mach_apic.h>
@ -108,6 +110,9 @@ static DEFINE_SPINLOCK(vector_lock);
*/
int nr_ioapic_registers[MAX_IO_APICS];
/* I/O APIC RTE contents at the OS boot up */
struct IO_APIC_route_entry *early_ioapic_entries[MAX_IO_APICS];
/* I/O APIC entries */
struct mp_config_ioapic mp_ioapics[MAX_IO_APICS];
int nr_ioapics;
@ -303,7 +308,12 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, u8 vector)
pin = entry->pin;
if (pin == -1)
break;
io_apic_write(apic, 0x11 + pin*2, dest);
/*
* With interrupt-remapping, destination information comes
* from interrupt-remapping table entry.
*/
if (!irq_remapped(irq))
io_apic_write(apic, 0x11 + pin*2, dest);
reg = io_apic_read(apic, 0x10 + pin*2);
reg &= ~IO_APIC_REDIR_VECTOR_MASK;
reg |= vector;
@ -440,6 +450,69 @@ static void clear_IO_APIC (void)
clear_IO_APIC_pin(apic, pin);
}
/*
* Saves and masks all the unmasked IO-APIC RTE's
*/
int save_mask_IO_APIC_setup(void)
{
union IO_APIC_reg_01 reg_01;
unsigned long flags;
int apic, pin;
/*
* The number of IO-APIC IRQ registers (== #pins):
*/
for (apic = 0; apic < nr_ioapics; apic++) {
spin_lock_irqsave(&ioapic_lock, flags);
reg_01.raw = io_apic_read(apic, 1);
spin_unlock_irqrestore(&ioapic_lock, flags);
nr_ioapic_registers[apic] = reg_01.bits.entries+1;
}
for (apic = 0; apic < nr_ioapics; apic++) {
early_ioapic_entries[apic] =
kzalloc(sizeof(struct IO_APIC_route_entry) *
nr_ioapic_registers[apic], GFP_KERNEL);
if (!early_ioapic_entries[apic])
return -ENOMEM;
}
for (apic = 0; apic < nr_ioapics; apic++)
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) {
struct IO_APIC_route_entry entry;
entry = early_ioapic_entries[apic][pin] =
ioapic_read_entry(apic, pin);
if (!entry.mask) {
entry.mask = 1;
ioapic_write_entry(apic, pin, entry);
}
}
return 0;
}
void restore_IO_APIC_setup(void)
{
int apic, pin;
for (apic = 0; apic < nr_ioapics; apic++)
for (pin = 0; pin < nr_ioapic_registers[apic]; pin++)
ioapic_write_entry(apic, pin,
early_ioapic_entries[apic][pin]);
}
void reinit_intr_remapped_IO_APIC(int intr_remapping)
{
/*
* for now plain restore of previous settings.
* TBD: In the case of OS enabling interrupt-remapping,
* IO-APIC RTE's need to be setup to point to interrupt-remapping
* table entries. for now, do a plain restore, and wait for
* the setup_IO_APIC_irqs() to do proper initialization.
*/
restore_IO_APIC_setup();
}
int skip_ioapic_setup;
int ioapic_force;
@ -839,18 +912,98 @@ void __setup_vector_irq(int cpu)
}
static struct irq_chip ioapic_chip;
#ifdef CONFIG_INTR_REMAP
static struct irq_chip ir_ioapic_chip;
#endif
static void ioapic_register_intr(int irq, unsigned long trigger)
{
if (trigger) {
if (trigger)
irq_desc[irq].status |= IRQ_LEVEL;
set_irq_chip_and_handler_name(irq, &ioapic_chip,
handle_fasteoi_irq, "fasteoi");
} else {
else
irq_desc[irq].status &= ~IRQ_LEVEL;
#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
irq_desc[irq].status |= IRQ_MOVE_PCNTXT;
if (trigger)
set_irq_chip_and_handler_name(irq, &ir_ioapic_chip,
handle_fasteoi_irq,
"fasteoi");
else
set_irq_chip_and_handler_name(irq, &ir_ioapic_chip,
handle_edge_irq, "edge");
return;
}
#endif
if (trigger)
set_irq_chip_and_handler_name(irq, &ioapic_chip,
handle_fasteoi_irq,
"fasteoi");
else
set_irq_chip_and_handler_name(irq, &ioapic_chip,
handle_edge_irq, "edge");
}
static int setup_ioapic_entry(int apic, int irq,
struct IO_APIC_route_entry *entry,
unsigned int destination, int trigger,
int polarity, int vector)
{
/*
* add it to the IO-APIC irq-routing table:
*/
memset(entry,0,sizeof(*entry));
#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled) {
struct intel_iommu *iommu = map_ioapic_to_ir(apic);
struct irte irte;
struct IR_IO_APIC_route_entry *ir_entry =
(struct IR_IO_APIC_route_entry *) entry;
int index;
if (!iommu)
panic("No mapping iommu for ioapic %d\n", apic);
index = alloc_irte(iommu, irq, 1);
if (index < 0)
panic("Failed to allocate IRTE for ioapic %d\n", apic);
memset(&irte, 0, sizeof(irte));
irte.present = 1;
irte.dst_mode = INT_DEST_MODE;
irte.trigger_mode = trigger;
irte.dlvry_mode = INT_DELIVERY_MODE;
irte.vector = vector;
irte.dest_id = IRTE_DEST(destination);
modify_irte(irq, &irte);
ir_entry->index2 = (index >> 15) & 0x1;
ir_entry->zero = 0;
ir_entry->format = 1;
ir_entry->index = (index & 0x7fff);
} else
#endif
{
entry->delivery_mode = INT_DELIVERY_MODE;
entry->dest_mode = INT_DEST_MODE;
entry->dest = destination;
}
entry->mask = 0; /* enable IRQ */
entry->trigger = trigger;
entry->polarity = polarity;
entry->vector = vector;
/* Mask level triggered irqs.
* Use IRQ_DELAYED_DISABLE for edge triggered irqs.
*/
if (trigger)
entry->mask = 1;
return 0;
}
static void setup_IO_APIC_irq(int apic, int pin, unsigned int irq,
@ -875,24 +1028,15 @@ static void setup_IO_APIC_irq(int apic, int pin, unsigned int irq,
apic, mp_ioapics[apic].mp_apicid, pin, cfg->vector,
irq, trigger, polarity);
/*
* add it to the IO-APIC irq-routing table:
*/
memset(&entry,0,sizeof(entry));
entry.delivery_mode = INT_DELIVERY_MODE;
entry.dest_mode = INT_DEST_MODE;
entry.dest = cpu_mask_to_apicid(mask);
entry.mask = 0; /* enable IRQ */
entry.trigger = trigger;
entry.polarity = polarity;
entry.vector = cfg->vector;
/* Mask level triggered irqs.
* Use IRQ_DELAYED_DISABLE for edge triggered irqs.
*/
if (trigger)
entry.mask = 1;
if (setup_ioapic_entry(mp_ioapics[apic].mp_apicid, irq, &entry,
cpu_mask_to_apicid(mask), trigger, polarity,
cfg->vector)) {
printk("Failed to setup ioapic entry for ioapic %d, pin %d\n",
mp_ioapics[apic].mp_apicid, pin);
__clear_irq_vector(irq);
return;
}
ioapic_register_intr(irq, trigger);
if (irq < 16)
@ -944,6 +1088,9 @@ static void __init setup_timer_IRQ0_pin(unsigned int apic, unsigned int pin,
{
struct IO_APIC_route_entry entry;
if (intr_remapping_enabled)
return;
memset(&entry, 0, sizeof(entry));
/*
@ -1090,6 +1237,7 @@ static __apicdebuginit void print_APIC_bitfield (int base)
void __apicdebuginit print_local_APIC(void * dummy)
{
unsigned int v, ver, maxlvt;
unsigned long icr;
if (apic_verbosity == APIC_QUIET)
return;
@ -1097,7 +1245,7 @@ void __apicdebuginit print_local_APIC(void * dummy)
printk("\n" KERN_DEBUG "printing local APIC contents on CPU#%d/%d:\n",
smp_processor_id(), hard_smp_processor_id());
v = apic_read(APIC_ID);
printk(KERN_INFO "... APIC ID: %08x (%01x)\n", v, GET_APIC_ID(read_apic_id()));
printk(KERN_INFO "... APIC ID: %08x (%01x)\n", v, read_apic_id());
v = apic_read(APIC_LVR);
printk(KERN_INFO "... APIC VERSION: %08x\n", v);
ver = GET_APIC_VERSION(v);
@ -1133,10 +1281,9 @@ void __apicdebuginit print_local_APIC(void * dummy)
v = apic_read(APIC_ESR);
printk(KERN_DEBUG "... APIC ESR: %08x\n", v);
v = apic_read(APIC_ICR);
printk(KERN_DEBUG "... APIC ICR: %08x\n", v);
v = apic_read(APIC_ICR2);
printk(KERN_DEBUG "... APIC ICR2: %08x\n", v);
icr = apic_icr_read();
printk(KERN_DEBUG "... APIC ICR: %08x\n", icr);
printk(KERN_DEBUG "... APIC ICR2: %08x\n", icr >> 32);
v = apic_read(APIC_LVTT);
printk(KERN_DEBUG "... APIC LVTT: %08x\n", v);
@ -1291,7 +1438,7 @@ void disable_IO_APIC(void)
entry.dest_mode = 0; /* Physical */
entry.delivery_mode = dest_ExtINT; /* ExtInt */
entry.vector = 0;
entry.dest = GET_APIC_ID(read_apic_id());
entry.dest = read_apic_id();
/*
* Add it to the IO-APIC irq-routing table:
@ -1397,6 +1544,147 @@ static int ioapic_retrigger_irq(unsigned int irq)
*/
#ifdef CONFIG_SMP
#ifdef CONFIG_INTR_REMAP
static void ir_irq_migration(struct work_struct *work);
static DECLARE_DELAYED_WORK(ir_migration_work, ir_irq_migration);
/*
* Migrate the IO-APIC irq in the presence of intr-remapping.
*
* For edge triggered, irq migration is a simple atomic update(of vector
* and cpu destination) of IRTE and flush the hardware cache.
*
* For level triggered, we need to modify the io-apic RTE aswell with the update
* vector information, along with modifying IRTE with vector and destination.
* So irq migration for level triggered is little bit more complex compared to
* edge triggered migration. But the good news is, we use the same algorithm
* for level triggered migration as we have today, only difference being,
* we now initiate the irq migration from process context instead of the
* interrupt context.
*
* In future, when we do a directed EOI (combined with cpu EOI broadcast
* suppression) to the IO-APIC, level triggered irq migration will also be
* as simple as edge triggered migration and we can do the irq migration
* with a simple atomic update to IO-APIC RTE.
*/
static void migrate_ioapic_irq(int irq, cpumask_t mask)
{
struct irq_cfg *cfg = irq_cfg + irq;
struct irq_desc *desc = irq_desc + irq;
cpumask_t tmp, cleanup_mask;
struct irte irte;
int modify_ioapic_rte = desc->status & IRQ_LEVEL;
unsigned int dest;
unsigned long flags;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
return;
if (get_irte(irq, &irte))
return;
if (assign_irq_vector(irq, mask))
return;
cpus_and(tmp, cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
if (modify_ioapic_rte) {
spin_lock_irqsave(&ioapic_lock, flags);
__target_IO_APIC_irq(irq, dest, cfg->vector);
spin_unlock_irqrestore(&ioapic_lock, flags);
}
irte.vector = cfg->vector;
irte.dest_id = IRTE_DEST(dest);
/*
* Modified the IRTE and flushes the Interrupt entry cache.
*/
modify_irte(irq, &irte);
if (cfg->move_in_progress) {
cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
cfg->move_cleanup_count = cpus_weight(cleanup_mask);
send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
cfg->move_in_progress = 0;
}
irq_desc[irq].affinity = mask;
}
static int migrate_irq_remapped_level(int irq)
{
int ret = -1;
mask_IO_APIC_irq(irq);
if (io_apic_level_ack_pending(irq)) {
/*
* Interrupt in progress. Migrating irq now will change the
* vector information in the IO-APIC RTE and that will confuse
* the EOI broadcast performed by cpu.
* So, delay the irq migration to the next instance.
*/
schedule_delayed_work(&ir_migration_work, 1);
goto unmask;
}
/* everthing is clear. we have right of way */
migrate_ioapic_irq(irq, irq_desc[irq].pending_mask);
ret = 0;
irq_desc[irq].status &= ~IRQ_MOVE_PENDING;
cpus_clear(irq_desc[irq].pending_mask);
unmask:
unmask_IO_APIC_irq(irq);
return ret;
}
static void ir_irq_migration(struct work_struct *work)
{
int irq;
for (irq = 0; irq < NR_IRQS; irq++) {
struct irq_desc *desc = irq_desc + irq;
if (desc->status & IRQ_MOVE_PENDING) {
unsigned long flags;
spin_lock_irqsave(&desc->lock, flags);
if (!desc->chip->set_affinity ||
!(desc->status & IRQ_MOVE_PENDING)) {
desc->status &= ~IRQ_MOVE_PENDING;
spin_unlock_irqrestore(&desc->lock, flags);
continue;
}
desc->chip->set_affinity(irq,
irq_desc[irq].pending_mask);
spin_unlock_irqrestore(&desc->lock, flags);
}
}
}
/*
* Migrates the IRQ destination in the process context.
*/
static void set_ir_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
{
if (irq_desc[irq].status & IRQ_LEVEL) {
irq_desc[irq].status |= IRQ_MOVE_PENDING;
irq_desc[irq].pending_mask = mask;
migrate_irq_remapped_level(irq);
return;
}
migrate_ioapic_irq(irq, mask);
}
#endif
asmlinkage void smp_irq_move_cleanup_interrupt(void)
{
unsigned vector, me;
@ -1453,6 +1741,17 @@ static void irq_complete_move(unsigned int irq)
#else
static inline void irq_complete_move(unsigned int irq) {}
#endif
#ifdef CONFIG_INTR_REMAP
static void ack_x2apic_level(unsigned int irq)
{
ack_x2APIC_irq();
}
static void ack_x2apic_edge(unsigned int irq)
{
ack_x2APIC_irq();
}
#endif
static void ack_apic_edge(unsigned int irq)
{
@ -1527,6 +1826,21 @@ static struct irq_chip ioapic_chip __read_mostly = {
.retrigger = ioapic_retrigger_irq,
};
#ifdef CONFIG_INTR_REMAP
static struct irq_chip ir_ioapic_chip __read_mostly = {
.name = "IR-IO-APIC",
.startup = startup_ioapic_irq,
.mask = mask_IO_APIC_irq,
.unmask = unmask_IO_APIC_irq,
.ack = ack_x2apic_edge,
.eoi = ack_x2apic_level,
#ifdef CONFIG_SMP
.set_affinity = set_ir_ioapic_affinity_irq,
#endif
.retrigger = ioapic_retrigger_irq,
};
#endif
static inline void init_IO_APIC_traps(void)
{
int irq;
@ -1712,6 +2026,8 @@ static inline void __init check_timer(void)
* 8259A.
*/
if (pin1 == -1) {
if (intr_remapping_enabled)
panic("BIOS bug: timer not connected to IO-APIC");
pin1 = pin2;
apic1 = apic2;
no_pin1 = 1;
@ -1738,6 +2054,8 @@ static inline void __init check_timer(void)
clear_IO_APIC_pin(0, pin1);
goto out;
}
if (intr_remapping_enabled)
panic("timer doesn't work through Interrupt-remapped IO-APIC");
clear_IO_APIC_pin(apic1, pin1);
if (!no_pin1)
apic_printk(APIC_QUIET, KERN_ERR "..MP-BIOS bug: "
@ -1977,6 +2295,9 @@ void destroy_irq(unsigned int irq)
dynamic_irq_cleanup(irq);
#ifdef CONFIG_INTR_REMAP
free_irte(irq);
#endif
spin_lock_irqsave(&vector_lock, flags);
__clear_irq_vector(irq);
spin_unlock_irqrestore(&vector_lock, flags);
@ -1995,10 +2316,41 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
tmp = TARGET_CPUS;
err = assign_irq_vector(irq, tmp);
if (!err) {
cpus_and(tmp, cfg->domain, tmp);
dest = cpu_mask_to_apicid(tmp);
if (err)
return err;
cpus_and(tmp, cfg->domain, tmp);
dest = cpu_mask_to_apicid(tmp);
#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
struct irte irte;
int ir_index;
u16 sub_handle;
ir_index = map_irq_to_irte_handle(irq, &sub_handle);
BUG_ON(ir_index == -1);
memset (&irte, 0, sizeof(irte));
irte.present = 1;
irte.dst_mode = INT_DEST_MODE;
irte.trigger_mode = 0; /* edge */
irte.dlvry_mode = INT_DELIVERY_MODE;
irte.vector = cfg->vector;
irte.dest_id = IRTE_DEST(dest);
modify_irte(irq, &irte);
msg->address_hi = MSI_ADDR_BASE_HI;
msg->data = sub_handle;
msg->address_lo = MSI_ADDR_BASE_LO | MSI_ADDR_IR_EXT_INT |
MSI_ADDR_IR_SHV |
MSI_ADDR_IR_INDEX1(ir_index) |
MSI_ADDR_IR_INDEX2(ir_index);
} else
#endif
{
msg->address_hi = MSI_ADDR_BASE_HI;
msg->address_lo =
MSI_ADDR_BASE_LO |
@ -2049,6 +2401,55 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
write_msi_msg(irq, &msg);
irq_desc[irq].affinity = mask;
}
#ifdef CONFIG_INTR_REMAP
/*
* Migrate the MSI irq to another cpumask. This migration is
* done in the process context using interrupt-remapping hardware.
*/
static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
{
struct irq_cfg *cfg = irq_cfg + irq;
unsigned int dest;
cpumask_t tmp, cleanup_mask;
struct irte irte;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
return;
if (get_irte(irq, &irte))
return;
if (assign_irq_vector(irq, mask))
return;
cpus_and(tmp, cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
irte.vector = cfg->vector;
irte.dest_id = IRTE_DEST(dest);
/*
* atomically update the IRTE with the new destination and vector.
*/
modify_irte(irq, &irte);
/*
* After this point, all the interrupts will start arriving
* at the new destination. So, time to cleanup the previous
* vector allocation.
*/
if (cfg->move_in_progress) {
cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
cfg->move_cleanup_count = cpus_weight(cleanup_mask);
send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
cfg->move_in_progress = 0;
}
irq_desc[irq].affinity = mask;
}
#endif
#endif /* CONFIG_SMP */
/*
@ -2066,28 +2467,159 @@ static struct irq_chip msi_chip = {
.retrigger = ioapic_retrigger_irq,
};
int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
#ifdef CONFIG_INTR_REMAP
static struct irq_chip msi_ir_chip = {
.name = "IR-PCI-MSI",
.unmask = unmask_msi_irq,
.mask = mask_msi_irq,
.ack = ack_x2apic_edge,
#ifdef CONFIG_SMP
.set_affinity = ir_set_msi_irq_affinity,
#endif
.retrigger = ioapic_retrigger_irq,
};
/*
* Map the PCI dev to the corresponding remapping hardware unit
* and allocate 'nvec' consecutive interrupt-remapping table entries
* in it.
*/
static int msi_alloc_irte(struct pci_dev *dev, int irq, int nvec)
{
struct intel_iommu *iommu;
int index;
iommu = map_dev_to_ir(dev);
if (!iommu) {
printk(KERN_ERR
"Unable to map PCI %s to iommu\n", pci_name(dev));
return -ENOENT;
}
index = alloc_irte(iommu, irq, nvec);
if (index < 0) {
printk(KERN_ERR
"Unable to allocate %d IRTE for PCI %s\n", nvec,
pci_name(dev));
return -ENOSPC;
}
return index;
}
#endif
static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc, int irq)
{
int ret;
struct msi_msg msg;
int irq, ret;
irq = create_irq();
if (irq < 0)
return irq;
ret = msi_compose_msg(dev, irq, &msg);
if (ret < 0) {
destroy_irq(irq);
if (ret < 0)
return ret;
}
set_irq_msi(irq, desc);
write_msi_msg(irq, &msg);
set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge");
#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
struct irq_desc *desc = irq_desc + irq;
/*
* irq migration in process context
*/
desc->status |= IRQ_MOVE_PCNTXT;
set_irq_chip_and_handler_name(irq, &msi_ir_chip, handle_edge_irq, "edge");
} else
#endif
set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge");
return 0;
}
int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
{
int irq, ret;
irq = create_irq();
if (irq < 0)
return irq;
#ifdef CONFIG_INTR_REMAP
if (!intr_remapping_enabled)
goto no_ir;
ret = msi_alloc_irte(dev, irq, 1);
if (ret < 0)
goto error;
no_ir:
#endif
ret = setup_msi_irq(dev, desc, irq);
if (ret < 0) {
destroy_irq(irq);
return ret;
}
return 0;
#ifdef CONFIG_INTR_REMAP
error:
destroy_irq(irq);
return ret;
#endif
}
int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
int irq, ret, sub_handle;
struct msi_desc *desc;
#ifdef CONFIG_INTR_REMAP
struct intel_iommu *iommu = 0;
int index = 0;
#endif
sub_handle = 0;
list_for_each_entry(desc, &dev->msi_list, list) {
irq = create_irq();
if (irq < 0)
return irq;
#ifdef CONFIG_INTR_REMAP
if (!intr_remapping_enabled)
goto no_ir;
if (!sub_handle) {
/*
* allocate the consecutive block of IRTE's
* for 'nvec'
*/
index = msi_alloc_irte(dev, irq, nvec);
if (index < 0) {
ret = index;
goto error;
}
} else {
iommu = map_dev_to_ir(dev);
if (!iommu) {
ret = -ENOENT;
goto error;
}
/*
* setup the mapping between the irq and the IRTE
* base index, the sub_handle pointing to the
* appropriate interrupt remap table entry.
*/
set_irte_irq(irq, iommu, index, sub_handle);
}
no_ir:
#endif
ret = setup_msi_irq(dev, desc, irq);
if (ret < 0)
goto error;
sub_handle++;
}
return 0;
error:
destroy_irq(irq);
return ret;
}
void arch_teardown_msi_irq(unsigned int irq)
{
destroy_irq(irq);
@ -2333,6 +2865,10 @@ void __init setup_ioapic_dest(void)
setup_IO_APIC_irq(ioapic, pin, irq,
irq_trigger(irq_entry),
irq_polarity(irq_entry));
#ifdef CONFIG_INTR_REMAP
else if (intr_remapping_enabled)
set_ir_ioapic_affinity_irq(irq, TARGET_CPUS);
#endif
else
set_ioapic_affinity_irq(irq, TARGET_CPUS);
}

1
arch/x86/kernel/ioport.c
View File

@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/thread_info.h>
#include <linux/syscalls.h>
#include <asm/syscalls.h>
/* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
static void set_bitmap(unsigned long *bitmap, unsigned int base,

3
arch/x86/kernel/ipi.c
View File

@ -20,6 +20,8 @@
#ifdef CONFIG_X86_32
#include <mach_apic.h>
#include <mach_ipi.h>
/*
* the following functions deal with sending IPIs between CPUs.
*
@ -147,7 +149,6 @@ void send_IPI_mask_sequence(cpumask_t mask, int vector)
}
/* must come after the send_IPI functions above for inlining */
#include <mach_ipi.h>
static int convert_apicid_to_cpu(int apic_id)
{
int i;

1
arch/x86/kernel/ldt.c
View File

@ -18,6 +18,7 @@
#include <asm/ldt.h>
#include <asm/desc.h>
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
#ifdef CONFIG_SMP
static void flush_ldt(void *current_mm)

2
arch/x86/kernel/mpparse.c
View File

@ -397,7 +397,9 @@ static int __init smp_read_mpc(struct mp_config_table *mpc, unsigned early)
generic_bigsmp_probe();
#endif
#ifdef CONFIG_X86_32
setup_apic_routing();
#endif
if (!num_processors)
printk(KERN_ERR "MPTABLE: no processors registered!\n");
return num_processors;

7
arch/x86/kernel/numaq_32.c
View File

@ -229,6 +229,12 @@ static void __init smp_read_mpc_oem(struct mp_config_oemtable *oemtable,
}
}
static int __init numaq_setup_ioapic_ids(void)
{
/* so can skip it */
return 1;
}
static struct x86_quirks numaq_x86_quirks __initdata = {
.arch_pre_time_init = numaq_pre_time_init,
.arch_time_init = NULL,
@ -243,6 +249,7 @@ static struct x86_quirks numaq_x86_quirks __initdata = {
.mpc_oem_bus_info = mpc_oem_bus_info,
.mpc_oem_pci_bus = mpc_oem_pci_bus,
.smp_read_mpc_oem = smp_read_mpc_oem,
.setup_ioapic_ids = numaq_setup_ioapic_ids,
};
void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,

2
arch/x86/kernel/paravirt.c
View File

@ -373,8 +373,6 @@ struct pv_cpu_ops pv_cpu_ops = {
struct pv_apic_ops pv_apic_ops = {
#ifdef CONFIG_X86_LOCAL_APIC
.apic_write = native_apic_write,
.apic_read = native_apic_read,
.setup_boot_clock = setup_boot_APIC_clock,
.setup_secondary_clock = setup_secondary_APIC_clock,
.startup_ipi_hook = paravirt_nop,

2
arch/x86/kernel/process_32.c
View File

@ -55,6 +55,8 @@
#include <asm/tlbflush.h>
#include <asm/cpu.h>
#include <asm/kdebug.h>
#include <asm/syscalls.h>
#include <asm/smp.h>
asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");

1
arch/x86/kernel/process_64.c
View File

@ -51,6 +51,7 @@
#include <asm/proto.h>
#include <asm/ia32.h>
#include <asm/idle.h>
#include <asm/syscalls.h>
asmlinkage extern void ret_from_fork(void);

36
arch/x86/kernel/ptrace.c
View File

@ -14,6 +14,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/regset.h>
#include <linux/tracehook.h>
#include <linux/user.h>
#include <linux/elf.h>
#include <linux/security.h>
@ -69,7 +70,7 @@ static inline bool invalid_selector(u16 value)
#define FLAG_MASK FLAG_MASK_32
static long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
static unsigned long *pt_regs_access(struct pt_regs *regs, unsigned long regno)
{
BUILD_BUG_ON(offsetof(struct pt_regs, bx) != 0);
regno >>= 2;
@ -1375,30 +1376,6 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
force_sig_info(SIGTRAP, &info, tsk);
}
static void syscall_trace(struct pt_regs *regs)
{
if (!(current->ptrace & PT_PTRACED))
return;
#if 0
printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n",
current->comm,
regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0),
current_thread_info()->flags, current->ptrace);
#endif
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
* stopping signal is not SIGTRAP. -brl
*/
if (current->exit_code) {
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
}
#ifdef CONFIG_X86_32
# define IS_IA32 1
@ -1432,8 +1409,9 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs)
if (unlikely(test_thread_flag(TIF_SYSCALL_EMU)))
ret = -1L;
if (ret || test_thread_flag(TIF_SYSCALL_TRACE))
syscall_trace(regs);
if ((ret || test_thread_flag(TIF_SYSCALL_TRACE)) &&
tracehook_report_syscall_entry(regs))
ret = -1L;
if (unlikely(current->audit_context)) {
if (IS_IA32)
@ -1459,7 +1437,7 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
if (test_thread_flag(TIF_SYSCALL_TRACE))
syscall_trace(regs);
tracehook_report_syscall_exit(regs, 0);
/*
* If TIF_SYSCALL_EMU is set, we only get here because of
@ -1475,6 +1453,6 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
* system call instruction.
*/
if (test_thread_flag(TIF_SINGLESTEP) &&
(current->ptrace & PT_PTRACED))
tracehook_consider_fatal_signal(current, SIGTRAP, SIG_DFL))
send_sigtrap(current, regs, 0);
}

2
arch/x86/kernel/setup.c
View File

@ -739,6 +739,8 @@ void __init setup_arch(char **cmdline_p)
num_physpages = max_pfn;
check_efer();
if (cpu_has_x2apic)
check_x2apic();
/* How many end-of-memory variables you have, grandma! */
/* need this before calling reserve_initrd */

14
arch/x86/kernel/sigframe.h
View File

@ -3,9 +3,18 @@ struct sigframe {
char __user *pretcode;
int sig;
struct sigcontext sc;
struct _fpstate fpstate;
/*
* fpstate is unused. fpstate is moved/allocated after
* retcode[] below. This movement allows to have the FP state and the
* future state extensions (xsave) stay together.
* And at the same time retaining the unused fpstate, prevents changing
* the offset of extramask[] in the sigframe and thus prevent any
* legacy application accessing/modifying it.
*/
struct _fpstate fpstate_unused;
unsigned long extramask[_NSIG_WORDS-1];
char retcode[8];
/* fp state follows here */
};
struct rt_sigframe {
@ -15,13 +24,14 @@ struct rt_sigframe {
void __user *puc;
struct siginfo info;
struct ucontext uc;
struct _fpstate fpstate;
char retcode[8];
/* fp state follows here */
};
#else
struct rt_sigframe {
char __user *pretcode;
struct ucontext uc;
struct siginfo info;
/* fp state follows here */
};
#endif

57
arch/x86/kernel/signal_32.c
View File

@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/tracehook.h>
#include <linux/elf.h>
#include <linux/smp.h>
#include <linux/mm.h>
@ -26,6 +27,7 @@
#include <asm/uaccess.h>
#include <asm/i387.h>
#include <asm/vdso.h>
#include <asm/syscalls.h>
#include "sigframe.h"
@ -159,28 +161,14 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
}
{
struct _fpstate __user *buf;
void __user *buf;
err |= __get_user(buf, &sc->fpstate);
if (buf) {
if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
goto badframe;
err |= restore_i387(buf);
} else {
struct task_struct *me = current;
if (used_math()) {
clear_fpu(me);
clear_used_math();
}
}
err |= restore_i387_xstate(buf);
}
err |= __get_user(*pax, &sc->ax);
return err;
badframe:
return 1;
}
asmlinkage unsigned long sys_sigreturn(unsigned long __unused)
@ -262,7 +250,7 @@ badframe:
* Set up a signal frame.
*/
static int
setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate,
setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
struct pt_regs *regs, unsigned long mask)
{
int tmp, err = 0;
@ -289,7 +277,7 @@ setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate,
err |= __put_user(regs->sp, &sc->sp_at_signal);
err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss);
tmp = save_i387(fpstate);
tmp = save_i387_xstate(fpstate);
if (tmp < 0)
err = 1;
else
@ -306,7 +294,8 @@ setup_sigcontext(struct sigcontext __user *sc, struct _fpstate __user *fpstate,
* Determine which stack to use..
*/
static inline void __user *
get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
void **fpstate)
{
unsigned long sp;
@ -332,6 +321,11 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
sp = (unsigned long) ka->sa.sa_restorer;
}
if (used_math()) {
sp = sp - sig_xstate_size;
*fpstate = (struct _fpstate *) sp;
}
sp -= frame_size;
/*
* Align the stack pointer according to the i386 ABI,
@ -350,8 +344,9 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
void __user *restorer;
int err = 0;
int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -366,7 +361,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
if (err)
goto give_sigsegv;
err = setup_sigcontext(&frame->sc, &frame->fpstate, regs, set->sig[0]);
err = setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]);
if (err)
goto give_sigsegv;
@ -427,8 +422,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
void __user *restorer;
int err = 0;
int usig;
void __user *fpstate = NULL;
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate);
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -447,13 +443,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
goto give_sigsegv;
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
if (cpu_has_xsave)
err |= __put_user(UC_FP_XSTATE, &frame->uc.uc_flags);
else
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->sp),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
err |= setup_sigcontext(&frame->uc.uc_mcontext, fpstate,
regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
@ -558,8 +557,6 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
* handler too.
*/
regs->flags &= ~X86_EFLAGS_TF;
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
@ -568,6 +565,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
return 0;
}
@ -661,5 +661,10 @@ do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
clear_thread_flag(TIF_IRET);
}

145
arch/x86/kernel/signal_64.c
View File

@ -15,6 +15,7 @@
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
#include <linux/tracehook.h>
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/personality.h>
@ -26,6 +27,8 @@
#include <asm/proto.h>
#include <asm/ia32_unistd.h>
#include <asm/mce.h>
#include <asm/syscall.h>
#include <asm/syscalls.h>
#include "sigframe.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@ -53,69 +56,6 @@ sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
return do_sigaltstack(uss, uoss, regs->sp);
}
/*
* Signal frame handlers.
*/
static inline int save_i387(struct _fpstate __user *buf)
{
struct task_struct *tsk = current;
int err = 0;
BUILD_BUG_ON(sizeof(struct user_i387_struct) !=
sizeof(tsk->thread.xstate->fxsave));
if ((unsigned long)buf % 16)
printk("save_i387: bad fpstate %p\n", buf);
if (!used_math())
return 0;
clear_used_math(); /* trigger finit */
if (task_thread_info(tsk)->status & TS_USEDFPU) {
err = save_i387_checking((struct i387_fxsave_struct __user *)
buf);
if (err)
return err;
task_thread_info(tsk)->status &= ~TS_USEDFPU;
stts();
} else {
if (__copy_to_user(buf, &tsk->thread.xstate->fxsave,
sizeof(struct i387_fxsave_struct)))
return -1;
}
return 1;
}
/*
* This restores directly out of user space. Exceptions are handled.
*/
static inline int restore_i387(struct _fpstate __user *buf)
{
struct task_struct *tsk = current;
int err;
if (!used_math()) {
err = init_fpu(tsk);
if (err)
return err;
}
if (!(task_thread_info(current)->status & TS_USEDFPU)) {
clts();
task_thread_info(current)->status |= TS_USEDFPU;
}
err = restore_fpu_checking((__force struct i387_fxsave_struct *)buf);
if (unlikely(err)) {
/*
* Encountered an error while doing the restore from the
* user buffer, clear the fpu state.
*/
clear_fpu(tsk);
clear_used_math();
}
return err;
}
/*
* Do a signal return; undo the signal stack.
*/
@ -160,25 +100,11 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
{
struct _fpstate __user * buf;
err |= __get_user(buf, &sc->fpstate);
if (buf) {
if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
goto badframe;
err |= restore_i387(buf);
} else {
struct task_struct *me = current;
if (used_math()) {
clear_fpu(me);
clear_used_math();
}
}
err |= restore_i387_xstate(buf);
}
err |= __get_user(*pax, &sc->ax);
return err;
badframe:
return 1;
}
asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
@ -269,26 +195,23 @@ get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
sp = current->sas_ss_sp + current->sas_ss_size;
}
return (void __user *)round_down(sp - size, 16);
return (void __user *)round_down(sp - size, 64);
}
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs * regs)
{
struct rt_sigframe __user *frame;
struct _fpstate __user *fp = NULL;
void __user *fp = NULL;
int err = 0;
struct task_struct *me = current;
if (used_math()) {
fp = get_stack(ka, regs, sizeof(struct _fpstate));
fp = get_stack(ka, regs, sig_xstate_size);
frame = (void __user *)round_down(
(unsigned long)fp - sizeof(struct rt_sigframe), 16) - 8;
if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate)))
goto give_sigsegv;
if (save_i387(fp) < 0)
if (save_i387_xstate(fp) < 0)
err |= -1;
} else
frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
@ -303,7 +226,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
}
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
if (cpu_has_xsave)
err |= __put_user(UC_FP_XSTATE, &frame->uc.uc_flags);
else
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(me->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->sp),
@ -354,35 +280,6 @@ give_sigsegv:
return -EFAULT;
}
/*
* Return -1L or the syscall number that @regs is executing.
*/
static long current_syscall(struct pt_regs *regs)
{
/*
* We always sign-extend a -1 value being set here,
* so this is always either -1L or a syscall number.
*/
return regs->orig_ax;
}
/*
* Return a value that is -EFOO if the system call in @regs->orig_ax
* returned an error. This only works for @regs from @current.
*/
static long current_syscall_ret(struct pt_regs *regs)
{
#ifdef CONFIG_IA32_EMULATION
if (test_thread_flag(TIF_IA32))
/*
* Sign-extend the value so (int)-EFOO becomes (long)-EFOO
* and will match correctly in comparisons.
*/
return (int) regs->ax;
#endif
return regs->ax;
}
/*
* OK, we're invoking a handler
*/
@ -394,9 +291,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
int ret;
/* Are we from a system call? */
if (current_syscall(regs) >= 0) {
if (syscall_get_nr(current, regs) >= 0) {
/* If so, check system call restarting.. */
switch (current_syscall_ret(regs)) {
switch (syscall_get_error(current, regs)) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->ax = -EINTR;
@ -453,8 +350,6 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
* handler too.
*/
regs->flags &= ~X86_EFLAGS_TF;
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
@ -462,6 +357,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigaddset(&current->blocked,sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
tracehook_signal_handler(sig, info, ka, regs,
test_thread_flag(TIF_SINGLESTEP));
}
return ret;
@ -518,9 +416,9 @@ static void do_signal(struct pt_regs *regs)
}
/* Did we come from a system call? */
if (current_syscall(regs) >= 0) {
if (syscall_get_nr(current, regs) >= 0) {
/* Restart the system call - no handlers present */
switch (current_syscall_ret(regs)) {
switch (syscall_get_error(current, regs)) {
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
@ -558,6 +456,11 @@ void do_notify_resume(struct pt_regs *regs, void *unused,
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
}
void signal_fault(struct pt_regs *regs, void __user *frame, char *where)

42
arch/x86/kernel/smpboot.c
View File

@ -88,7 +88,7 @@ static DEFINE_PER_CPU(struct task_struct *, idle_thread_array);
#define get_idle_for_cpu(x) (per_cpu(idle_thread_array, x))
#define set_idle_for_cpu(x, p) (per_cpu(idle_thread_array, x) = (p))
#else
struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ;
static struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ;
#define get_idle_for_cpu(x) (idle_thread_array[(x)])
#define set_idle_for_cpu(x, p) (idle_thread_array[(x)] = (p))
#endif
@ -123,13 +123,12 @@ EXPORT_PER_CPU_SYMBOL(cpu_info);
static atomic_t init_deasserted;
static int boot_cpu_logical_apicid;
/* representing cpus for which sibling maps can be computed */
static cpumask_t cpu_sibling_setup_map;
/* Set if we find a B stepping CPU */
int __cpuinitdata smp_b_stepping;
static int __cpuinitdata smp_b_stepping;
#if defined(CONFIG_NUMA) && defined(CONFIG_X86_32)
@ -165,6 +164,8 @@ static void unmap_cpu_to_node(int cpu)
#endif
#ifdef CONFIG_X86_32
static int boot_cpu_logical_apicid;
u8 cpu_2_logical_apicid[NR_CPUS] __read_mostly =
{ [0 ... NR_CPUS-1] = BAD_APICID };
@ -210,7 +211,7 @@ static void __cpuinit smp_callin(void)
/*
* (This works even if the APIC is not enabled.)
*/
phys_id = GET_APIC_ID(read_apic_id());
phys_id = read_apic_id();
cpuid = smp_processor_id();
if (cpu_isset(cpuid, cpu_callin_map)) {
panic("%s: phys CPU#%d, CPU#%d already present??\n", __func__,
@ -550,8 +551,7 @@ static inline void __inquire_remote_apic(int apicid)
printk(KERN_CONT
"a previous APIC delivery may have failed\n");
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
apic_write(APIC_ICR, APIC_DM_REMRD | regs[i]);
apic_icr_write(APIC_DM_REMRD | regs[i], apicid);
timeout = 0;
do {
@ -583,11 +583,9 @@ wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip)
int maxlvt;
/* Target chip */
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(logical_apicid));
/* Boot on the stack */
/* Kick the second */
apic_write(APIC_ICR, APIC_DM_NMI | APIC_DEST_LOGICAL);
apic_icr_write(APIC_DM_NMI | APIC_DEST_LOGICAL, logical_apicid);
pr_debug("Waiting for send to finish...\n");
send_status = safe_apic_wait_icr_idle();
@ -640,13 +638,11 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
/*
* Turn INIT on target chip
*/
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/*
* Send IPI
*/
apic_write(APIC_ICR,
APIC_INT_LEVELTRIG | APIC_INT_ASSERT | APIC_DM_INIT);
apic_icr_write(APIC_INT_LEVELTRIG | APIC_INT_ASSERT | APIC_DM_INIT,
phys_apicid);
pr_debug("Waiting for send to finish...\n");
send_status = safe_apic_wait_icr_idle();
@ -656,10 +652,8 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
pr_debug("Deasserting INIT.\n");
/* Target chip */
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/* Send IPI */
apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT);
apic_icr_write(APIC_INT_LEVELTRIG | APIC_DM_INIT, phys_apicid);
pr_debug("Waiting for send to finish...\n");
send_status = safe_apic_wait_icr_idle();
@ -702,11 +696,10 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
*/
/* Target chip */
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/* Boot on the stack */
/* Kick the second */
apic_write(APIC_ICR, APIC_DM_STARTUP | (start_eip >> 12));
apic_icr_write(APIC_DM_STARTUP | (start_eip >> 12),
phys_apicid);
/*
* Give the other CPU some time to accept the IPI.
@ -1175,10 +1168,17 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
* Setup boot CPU information
*/
smp_store_cpu_info(0); /* Final full version of the data */
#ifdef CONFIG_X86_32
boot_cpu_logical_apicid = logical_smp_processor_id();
#endif
current_thread_info()->cpu = 0; /* needed? */
set_cpu_sibling_map(0);
#ifdef CONFIG_X86_64
enable_IR_x2apic();
setup_apic_routing();
#endif
if (smp_sanity_check(max_cpus) < 0) {
printk(KERN_INFO "SMP disabled\n");
disable_smp();
@ -1186,9 +1186,9 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
}
preempt_disable();
if (GET_APIC_ID(read_apic_id()) != boot_cpu_physical_apicid) {
if (read_apic_id() != boot_cpu_physical_apicid) {
panic("Boot APIC ID in local APIC unexpected (%d vs %d)",
GET_APIC_ID(read_apic_id()), boot_cpu_physical_apicid);
read_apic_id(), boot_cpu_physical_apicid);
/* Or can we switch back to PIC here? */
}
preempt_enable();

2
arch/x86/kernel/summit_32.c
View File

@ -30,7 +30,7 @@
#include <linux/init.h>
#include <asm/io.h>
#include <asm/bios_ebda.h>
#include <asm/mach-summit/mach_mpparse.h>
#include <asm/summit/mpparse.h>
static struct rio_table_hdr *rio_table_hdr __initdata;
static struct scal_detail *scal_devs[MAX_NUMNODES] __initdata;

2
arch/x86/kernel/sys_i386_32.c
View File

@ -22,6 +22,8 @@
#include <linux/uaccess.h>
#include <linux/unistd.h>
#include <asm/syscalls.h>
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)

1
arch/x86/kernel/sys_x86_64.c
View File

@ -16,6 +16,7 @@
#include <asm/uaccess.h>
#include <asm/ia32.h>
#include <asm/syscalls.h>
asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off)

4
arch/x86/kernel/syscall_64.c
View File

@ -8,12 +8,12 @@
#define __NO_STUBS
#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
#undef _ASM_X86_64_UNISTD_H_
#undef ASM_X86__UNISTD_64_H
#include <asm/unistd_64.h>
#undef __SYSCALL
#define __SYSCALL(nr, sym) [nr] = sym,
#undef _ASM_X86_64_UNISTD_H_
#undef ASM_X86__UNISTD_64_H
typedef void (*sys_call_ptr_t)(void);

1
arch/x86/kernel/time_32.c
View File

@ -36,6 +36,7 @@
#include <asm/arch_hooks.h>
#include <asm/hpet.h>
#include <asm/time.h>
#include <asm/timer.h>
#include "do_timer.h"

1
arch/x86/kernel/tls.c
View File

@ -10,6 +10,7 @@
#include <asm/ldt.h>
#include <asm/processor.h>
#include <asm/proto.h>
#include <asm/syscalls.h>
#include "tls.h"

1
arch/x86/kernel/traps_32.c
View File

@ -1228,7 +1228,6 @@ void __init trap_init(void)
set_bit(SYSCALL_VECTOR, used_vectors);
init_thread_xstate();
/*
* Should be a barrier for any external CPU state:
*/

6
arch/x86/kernel/traps_64.c
View File

@ -1134,7 +1134,7 @@ asmlinkage void math_state_restore(void)
/*
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
*/
if (unlikely(restore_fpu_checking(&me->thread.xstate->fxsave))) {
if (unlikely(restore_fpu_checking(me))) {
stts();
force_sig(SIGSEGV, me);
return;
@ -1172,10 +1172,6 @@ void __init trap_init(void)
#ifdef CONFIG_IA32_EMULATION
set_system_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
#endif
/*
* initialize the per thread extended state:
*/
init_thread_xstate();
/*
* Should be a barrier for any external CPU state:
*/

1
arch/x86/kernel/vm86_32.c
View File

@ -46,6 +46,7 @@
#include <asm/io.h>
#include <asm/tlbflush.h>
#include <asm/irq.h>
#include <asm/syscalls.h>
/*
* Known problems:

4
arch/x86/kernel/vmi_32.c
View File

@ -905,8 +905,8 @@ static inline int __init activate_vmi(void)
#endif
#ifdef CONFIG_X86_LOCAL_APIC
para_fill(pv_apic_ops.apic_read, APICRead);
para_fill(pv_apic_ops.apic_write, APICWrite);
para_fill(apic_ops->read, APICRead);
para_fill(apic_ops->write, APICWrite);
#endif
/*

316
arch/x86/kernel/xsave.c Normal file
View File

@ -0,0 +1,316 @@
/*
* xsave/xrstor support.
*
* Author: Suresh Siddha <suresh.b.siddha@intel.com>
*/
#include <linux/bootmem.h>
#include <linux/compat.h>
#include <asm/i387.h>
#ifdef CONFIG_IA32_EMULATION
#include <asm/sigcontext32.h>
#endif
#include <asm/xcr.h>
/*
* Supported feature mask by the CPU and the kernel.
*/
u64 pcntxt_mask;
struct _fpx_sw_bytes fx_sw_reserved;
#ifdef CONFIG_IA32_EMULATION
struct _fpx_sw_bytes fx_sw_reserved_ia32;
#endif
/*
* Check for the presence of extended state information in the
* user fpstate pointer in the sigcontext.
*/
int check_for_xstate(struct i387_fxsave_struct __user *buf,
void __user *fpstate,
struct _fpx_sw_bytes *fx_sw_user)
{
int min_xstate_size = sizeof(struct i387_fxsave_struct) +
sizeof(struct xsave_hdr_struct);
unsigned int magic2;
int err;
err = __copy_from_user(fx_sw_user, &buf->sw_reserved[0],
sizeof(struct _fpx_sw_bytes));
if (err)
return err;
/*
* First Magic check failed.
*/
if (fx_sw_user->magic1 != FP_XSTATE_MAGIC1)
return -1;
/*
* Check for error scenarios.
*/
if (fx_sw_user->xstate_size < min_xstate_size ||
fx_sw_user->xstate_size > xstate_size ||
fx_sw_user->xstate_size > fx_sw_user->extended_size)
return -1;
err = __get_user(magic2, (__u32 *) (((void *)fpstate) +
fx_sw_user->extended_size -
FP_XSTATE_MAGIC2_SIZE));
/*
* Check for the presence of second magic word at the end of memory
* layout. This detects the case where the user just copied the legacy
* fpstate layout with out copying the extended state information
* in the memory layout.
*/
if (err || magic2 != FP_XSTATE_MAGIC2)
return -1;
return 0;
}
#ifdef CONFIG_X86_64
/*
* Signal frame handlers.
*/
int save_i387_xstate(void __user *buf)
{
struct task_struct *tsk = current;
int err = 0;
if (!access_ok(VERIFY_WRITE, buf, sig_xstate_size))
return -EACCES;
BUG_ON(sig_xstate_size < xstate_size);
if ((unsigned long)buf % 64)
printk("save_i387_xstate: bad fpstate %p\n", buf);
if (!used_math())
return 0;
clear_used_math(); /* trigger finit */
if (task_thread_info(tsk)->status & TS_USEDFPU) {
/*
* Start with clearing the user buffer. This will present a
* clean context for the bytes not touched by the fxsave/xsave.
*/
__clear_user(buf, sig_xstate_size);
if (task_thread_info(tsk)->status & TS_XSAVE)
err = xsave_user(buf);
else
err = fxsave_user(buf);
if (err)
return err;
task_thread_info(tsk)->status &= ~TS_USEDFPU;
stts();
} else {
if (__copy_to_user(buf, &tsk->thread.xstate->fxsave,
xstate_size))
return -1;
}
if (task_thread_info(tsk)->status & TS_XSAVE) {
struct _fpstate __user *fx = buf;
err = __copy_to_user(&fx->sw_reserved, &fx_sw_reserved,
sizeof(struct _fpx_sw_bytes));
err |= __put_user(FP_XSTATE_MAGIC2,
(__u32 __user *) (buf + sig_xstate_size
- FP_XSTATE_MAGIC2_SIZE));
}
return 1;
}
/*
* Restore the extended state if present. Otherwise, restore the FP/SSE
* state.
*/
int restore_user_xstate(void __user *buf)
{
struct _fpx_sw_bytes fx_sw_user;
u64 mask;
int err;
if (((unsigned long)buf % 64) ||
check_for_xstate(buf, buf, &fx_sw_user))
goto fx_only;
mask = fx_sw_user.xstate_bv;
/*
* restore the state passed by the user.
*/
err = xrestore_user(buf, mask);
if (err)
return err;
/*
* init the state skipped by the user.
*/
mask = pcntxt_mask & ~mask;
xrstor_state(init_xstate_buf, mask);
return 0;
fx_only:
/*
* couldn't find the extended state information in the
* memory layout. Restore just the FP/SSE and init all
* the other extended state.
*/
xrstor_state(init_xstate_buf, pcntxt_mask & ~XSTATE_FPSSE);
return fxrstor_checking((__force struct i387_fxsave_struct *)buf);
}
/*
* This restores directly out of user space. Exceptions are handled.
*/
int restore_i387_xstate(void __user *buf)
{
struct task_struct *tsk = current;
int err = 0;
if (!buf) {
if (used_math())
goto clear;
return 0;
} else
if (!access_ok(VERIFY_READ, buf, sig_xstate_size))
return -EACCES;
if (!used_math()) {
err = init_fpu(tsk);
if (err)
return err;
}
if (!(task_thread_info(current)->status & TS_USEDFPU)) {
clts();
task_thread_info(current)->status |= TS_USEDFPU;
}
if (task_thread_info(tsk)->status & TS_XSAVE)
err = restore_user_xstate(buf);
else
err = fxrstor_checking((__force struct i387_fxsave_struct *)
buf);
if (unlikely(err)) {
/*
* Encountered an error while doing the restore from the
* user buffer, clear the fpu state.
*/
clear:
clear_fpu(tsk);
clear_used_math();
}
return err;
}
#endif
/*
* Prepare the SW reserved portion of the fxsave memory layout, indicating
* the presence of the extended state information in the memory layout
* pointed by the fpstate pointer in the sigcontext.
* This will be saved when ever the FP and extended state context is
* saved on the user stack during the signal handler delivery to the user.
*/
void prepare_fx_sw_frame(void)
{
int size_extended = (xstate_size - sizeof(struct i387_fxsave_struct)) +
FP_XSTATE_MAGIC2_SIZE;
sig_xstate_size = sizeof(struct _fpstate) + size_extended;
#ifdef CONFIG_IA32_EMULATION
sig_xstate_ia32_size = sizeof(struct _fpstate_ia32) + size_extended;
#endif
memset(&fx_sw_reserved, 0, sizeof(fx_sw_reserved));
fx_sw_reserved.magic1 = FP_XSTATE_MAGIC1;
fx_sw_reserved.extended_size = sig_xstate_size;
fx_sw_reserved.xstate_bv = pcntxt_mask;
fx_sw_reserved.xstate_size = xstate_size;
#ifdef CONFIG_IA32_EMULATION
memcpy(&fx_sw_reserved_ia32, &fx_sw_reserved,
sizeof(struct _fpx_sw_bytes));
fx_sw_reserved_ia32.extended_size = sig_xstate_ia32_size;
#endif
}
/*
* Represents init state for the supported extended state.
*/
struct xsave_struct *init_xstate_buf;
#ifdef CONFIG_X86_64
unsigned int sig_xstate_size = sizeof(struct _fpstate);
#endif
/*
* Enable the extended processor state save/restore feature
*/
void __cpuinit xsave_init(void)
{
if (!cpu_has_xsave)
return;
set_in_cr4(X86_CR4_OSXSAVE);
/*
* Enable all the features that the HW is capable of
* and the Linux kernel is aware of.
*/
xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
}
/*
* setup the xstate image representing the init state
*/
void setup_xstate_init(void)
{
init_xstate_buf = alloc_bootmem(xstate_size);
init_xstate_buf->i387.mxcsr = MXCSR_DEFAULT;
}
/*
* Enable and initialize the xsave feature.
*/
void __init xsave_cntxt_init(void)
{
unsigned int eax, ebx, ecx, edx;
cpuid_count(0xd, 0, &eax, &ebx, &ecx, &edx);
pcntxt_mask = eax + ((u64)edx << 32);
if ((pcntxt_mask & XSTATE_FPSSE) != XSTATE_FPSSE) {
printk(KERN_ERR "FP/SSE not shown under xsave features 0x%llx\n",
pcntxt_mask);
BUG();
}
/*
* for now OS knows only about FP/SSE
*/
pcntxt_mask = pcntxt_mask & XCNTXT_MASK;
xsave_init();
/*
* Recompute the context size for enabled features
*/
cpuid_count(0xd, 0, &eax, &ebx, &ecx, &edx);
xstate_size = ebx;
prepare_fx_sw_frame();
setup_xstate_init();
printk(KERN_INFO "xsave/xrstor: enabled xstate_bv 0x%llx, "
"cntxt size 0x%x\n",
pcntxt_mask, xstate_size);
}

38
arch/x86/lguest/boot.c
View File

@ -55,6 +55,7 @@
#include <linux/lguest_launcher.h>
#include <linux/virtio_console.h>
#include <linux/pm.h>
#include <asm/apic.h>
#include <asm/lguest.h>
#include <asm/paravirt.h>
#include <asm/param.h>
@ -783,14 +784,44 @@ static void lguest_wbinvd(void)
* code qualifies for Advanced. It will also never interrupt anything. It
* does, however, allow us to get through the Linux boot code. */
#ifdef CONFIG_X86_LOCAL_APIC
static void lguest_apic_write(unsigned long reg, u32 v)
static void lguest_apic_write(u32 reg, u32 v)
{
}
static u32 lguest_apic_read(unsigned long reg)
static u32 lguest_apic_read(u32 reg)
{
return 0;
}
static u64 lguest_apic_icr_read(void)
{
return 0;
}
static void lguest_apic_icr_write(u32 low, u32 id)
{
/* Warn to see if there's any stray references */
WARN_ON(1);
}
static void lguest_apic_wait_icr_idle(void)
{
return;
}
static u32 lguest_apic_safe_wait_icr_idle(void)
{
return 0;
}
static struct apic_ops lguest_basic_apic_ops = {
.read = lguest_apic_read,
.write = lguest_apic_write,
.icr_read = lguest_apic_icr_read,
.icr_write = lguest_apic_icr_write,
.wait_icr_idle = lguest_apic_wait_icr_idle,
.safe_wait_icr_idle = lguest_apic_safe_wait_icr_idle,
};
#endif
/* STOP! Until an interrupt comes in. */
@ -990,8 +1021,7 @@ __init void lguest_init(void)
#ifdef CONFIG_X86_LOCAL_APIC
/* apic read/write intercepts */
pv_apic_ops.apic_write = lguest_apic_write;
pv_apic_ops.apic_read = lguest_apic_read;
apic_ops = &lguest_basic_apic_ops;
#endif
/* time operations */

7
arch/x86/lib/usercopy_32.c
View File

@ -14,6 +14,13 @@
#include <asm/uaccess.h>
#include <asm/mmx.h>
#ifdef CONFIG_X86_INTEL_USERCOPY
/*
* Alignment at which movsl is preferred for bulk memory copies.
*/
struct movsl_mask movsl_mask __read_mostly;
#endif
static inline int __movsl_is_ok(unsigned long a1, unsigned long a2, unsigned long n)
{
#ifdef CONFIG_X86_INTEL_USERCOPY

4
arch/x86/mach-default/setup.c
View File

@ -10,13 +10,15 @@
#include <asm/e820.h>
#include <asm/setup.h>
#include <mach_ipi.h>
#ifdef CONFIG_HOTPLUG_CPU
#define DEFAULT_SEND_IPI (1)
#else
#define DEFAULT_SEND_IPI (0)
#endif
int no_broadcast=DEFAULT_SEND_IPI;
int no_broadcast = DEFAULT_SEND_IPI;
/**
* pre_intr_init_hook - initialisation prior to setting up interrupt vectors

2
arch/x86/mach-generic/Makefile
View File

@ -9,4 +9,4 @@ obj-$(CONFIG_X86_NUMAQ) += numaq.o
obj-$(CONFIG_X86_SUMMIT) += summit.o
obj-$(CONFIG_X86_BIGSMP) += bigsmp.o
obj-$(CONFIG_X86_ES7000) += es7000.o
obj-$(CONFIG_X86_ES7000) += ../../x86/mach-es7000/
obj-$(CONFIG_X86_ES7000) += ../../x86/es7000/

9
arch/x86/mach-generic/bigsmp.c
View File

@ -5,18 +5,17 @@
#define APIC_DEFINITION 1
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <asm/smp.h>
#include <asm/mpspec.h>
#include <asm/genapic.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <asm/mach-bigsmp/mach_apic.h>
#include <asm/mach-bigsmp/mach_apicdef.h>
#include <asm/mach-bigsmp/mach_ipi.h>
#include <asm/bigsmp/apicdef.h>
#include <linux/smp.h>
#include <asm/bigsmp/apic.h>
#include <asm/bigsmp/ipi.h>
#include <asm/mach-default/mach_mpparse.h>
static int dmi_bigsmp; /* can be set by dmi scanners */

13
arch/x86/mach-generic/es7000.c
View File

@ -4,20 +4,19 @@
#define APIC_DEFINITION 1
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <asm/smp.h>
#include <asm/mpspec.h>
#include <asm/genapic.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <asm/mach-es7000/mach_apicdef.h>
#include <asm/mach-es7000/mach_apic.h>
#include <asm/mach-es7000/mach_ipi.h>
#include <asm/mach-es7000/mach_mpparse.h>
#include <asm/mach-es7000/mach_wakecpu.h>
#include <asm/es7000/apicdef.h>
#include <linux/smp.h>
#include <asm/es7000/apic.h>
#include <asm/es7000/ipi.h>
#include <asm/es7000/mpparse.h>
#include <asm/es7000/wakecpu.h>
static int probe_es7000(void)
{

12
arch/x86/mach-generic/numaq.c
View File

@ -4,7 +4,6 @@
#define APIC_DEFINITION 1
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/smp.h>
#include <asm/mpspec.h>
#include <asm/genapic.h>
#include <asm/fixmap.h>
@ -12,11 +11,12 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/init.h>
#include <asm/mach-numaq/mach_apic.h>
#include <asm/mach-numaq/mach_apicdef.h>
#include <asm/mach-numaq/mach_ipi.h>
#include <asm/mach-numaq/mach_mpparse.h>
#include <asm/mach-numaq/mach_wakecpu.h>
#include <asm/numaq/apicdef.h>
#include <linux/smp.h>
#include <asm/numaq/apic.h>
#include <asm/numaq/ipi.h>
#include <asm/numaq/mpparse.h>
#include <asm/numaq/wakecpu.h>
#include <asm/numaq.h>
static int mps_oem_check(struct mp_config_table *mpc, char *oem,

11
arch/x86/mach-generic/summit.c
View File

@ -4,19 +4,18 @@
#define APIC_DEFINITION 1
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <asm/smp.h>
#include <asm/mpspec.h>
#include <asm/genapic.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <asm/mach-summit/mach_apic.h>
#include <asm/mach-summit/mach_apicdef.h>
#include <asm/mach-summit/mach_ipi.h>
#include <asm/mach-summit/mach_mpparse.h>
#include <asm/summit/apicdef.h>
#include <linux/smp.h>
#include <asm/summit/apic.h>
#include <asm/summit/ipi.h>
#include <asm/summit/mpparse.h>
static int probe_summit(void)
{

3
arch/x86/mm/fault.c
View File

@ -35,6 +35,7 @@
#include <asm/tlbflush.h>
#include <asm/proto.h>
#include <asm-generic/sections.h>
#include <asm/traps.h>
/*
* Page fault error code bits
@ -357,8 +358,6 @@ static int is_errata100(struct pt_regs *regs, unsigned long address)
return 0;
}
void do_invalid_op(struct pt_regs *, unsigned long);
static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
{
#ifdef CONFIG_X86_F00F_BUG

1
arch/x86/mm/init_32.c
View File

@ -47,6 +47,7 @@
#include <asm/paravirt.h>
#include <asm/setup.h>
#include <asm/cacheflush.h>
#include <asm/smp.h>
unsigned int __VMALLOC_RESERVE = 128 << 20;

4
arch/x86/mm/ioremap.c
View File

@ -421,7 +421,7 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
return;
}
int __initdata early_ioremap_debug;
static int __initdata early_ioremap_debug;
static int __init early_ioremap_debug_setup(char *str)
{
@ -547,7 +547,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
}
int __initdata early_ioremap_nested;
static int __initdata early_ioremap_nested;
static int __init check_early_ioremap_leak(void)
{

7
arch/x86/power/cpu_32.c
View File

@ -11,6 +11,7 @@
#include <linux/suspend.h>
#include <asm/mtrr.h>
#include <asm/mce.h>
#include <asm/xcr.h>
static struct saved_context saved_context;
@ -126,6 +127,12 @@ static void __restore_processor_state(struct saved_context *ctxt)
if (boot_cpu_has(X86_FEATURE_SEP))
enable_sep_cpu();
/*
* restore XCR0 for xsave capable cpu's.
*/
if (cpu_has_xsave)
xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
fix_processor_context();
do_fpu_end();
mtrr_ap_init();

7
arch/x86/power/cpu_64.c
View File

@ -14,6 +14,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/mtrr.h>
#include <asm/xcr.h>
static void fix_processor_context(void);
@ -122,6 +123,12 @@ static void __restore_processor_state(struct saved_context *ctxt)
wrmsrl(MSR_GS_BASE, ctxt->gs_base);
wrmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base);
/*
* restore XCR0 for xsave capable cpu's.
*/
if (cpu_has_xsave)
xsetbv(XCR_XFEATURE_ENABLED_MASK, pcntxt_mask);
fix_processor_context();
do_fpu_end();

45
arch/x86/xen/enlighten.c
View File

@ -36,6 +36,7 @@
#include <xen/hvc-console.h>
#include <asm/paravirt.h>
#include <asm/apic.h>
#include <asm/page.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@ -580,16 +581,47 @@ static void xen_io_delay(void)
}
#ifdef CONFIG_X86_LOCAL_APIC
static u32 xen_apic_read(unsigned long reg)
static u32 xen_apic_read(u32 reg)
{
return 0;
}
static void xen_apic_write(unsigned long reg, u32 val)
static void xen_apic_write(u32 reg, u32 val)
{
/* Warn to see if there's any stray references */
WARN_ON(1);
}
static u64 xen_apic_icr_read(void)
{
return 0;
}
static void xen_apic_icr_write(u32 low, u32 id)
{
/* Warn to see if there's any stray references */
WARN_ON(1);
}
static void xen_apic_wait_icr_idle(void)
{
return;
}
static u32 xen_safe_apic_wait_icr_idle(void)
{
return 0;
}
static struct apic_ops xen_basic_apic_ops = {
.read = xen_apic_read,
.write = xen_apic_write,
.icr_read = xen_apic_icr_read,
.icr_write = xen_apic_icr_write,
.wait_icr_idle = xen_apic_wait_icr_idle,
.safe_wait_icr_idle = xen_safe_apic_wait_icr_idle,
};
#endif
static void xen_flush_tlb(void)
@ -1273,8 +1305,6 @@ static const struct pv_irq_ops xen_irq_ops __initdata = {
static const struct pv_apic_ops xen_apic_ops __initdata = {
#ifdef CONFIG_X86_LOCAL_APIC
.apic_write = xen_apic_write,
.apic_read = xen_apic_read,
.setup_boot_clock = paravirt_nop,
.setup_secondary_clock = paravirt_nop,
.startup_ipi_hook = paravirt_nop,
@ -1677,6 +1707,13 @@ asmlinkage void __init xen_start_kernel(void)
pv_apic_ops = xen_apic_ops;
pv_mmu_ops = xen_mmu_ops;
#ifdef CONFIG_X86_LOCAL_APIC
/*
* set up the basic apic ops.
*/
apic_ops = &xen_basic_apic_ops;
#endif
if (xen_feature(XENFEAT_mmu_pt_update_preserve_ad)) {
pv_mmu_ops.ptep_modify_prot_start = xen_ptep_modify_prot_start;
pv_mmu_ops.ptep_modify_prot_commit = xen_ptep_modify_prot_commit;

2
drivers/pci/Makefile
View File

@ -26,6 +26,8 @@ obj-$(CONFIG_HT_IRQ) += htirq.o
# Build Intel IOMMU support
obj-$(CONFIG_DMAR) += dmar.o iova.o intel-iommu.o
obj-$(CONFIG_INTR_REMAP) += dmar.o intr_remapping.o
#
# Some architectures use the generic PCI setup functions
#

157
drivers/pci/dma_remapping.h Normal file
View File

@ -0,0 +1,157 @@
#ifndef _DMA_REMAPPING_H
#define _DMA_REMAPPING_H
/*
* We need a fixed PAGE_SIZE of 4K irrespective of
* arch PAGE_SIZE for IOMMU page tables.
*/
#define PAGE_SHIFT_4K (12)
#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K)
#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K)
#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K)
#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
/*
* 0: Present
* 1-11: Reserved
* 12-63: Context Ptr (12 - (haw-1))
* 64-127: Reserved
*/
struct root_entry {
u64 val;
u64 rsvd1;
};
#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
static inline bool root_present(struct root_entry *root)
{
return (root->val & 1);
}
static inline void set_root_present(struct root_entry *root)
{
root->val |= 1;
}
static inline void set_root_value(struct root_entry *root, unsigned long value)
{
root->val |= value & PAGE_MASK_4K;
}
struct context_entry;
static inline struct context_entry *
get_context_addr_from_root(struct root_entry *root)
{
return (struct context_entry *)
(root_present(root)?phys_to_virt(
root->val & PAGE_MASK_4K):
NULL);
}
/*
* low 64 bits:
* 0: present
* 1: fault processing disable
* 2-3: translation type
* 12-63: address space root
* high 64 bits:
* 0-2: address width
* 3-6: aval
* 8-23: domain id
*/
struct context_entry {
u64 lo;
u64 hi;
};
#define context_present(c) ((c).lo & 1)
#define context_fault_disable(c) (((c).lo >> 1) & 1)
#define context_translation_type(c) (((c).lo >> 2) & 3)
#define context_address_root(c) ((c).lo & PAGE_MASK_4K)
#define context_address_width(c) ((c).hi & 7)
#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
#define context_set_present(c) do {(c).lo |= 1;} while (0)
#define context_set_fault_enable(c) \
do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
#define context_set_translation_type(c, val) \
do { \
(c).lo &= (((u64)-1) << 4) | 3; \
(c).lo |= ((val) & 3) << 2; \
} while (0)
#define CONTEXT_TT_MULTI_LEVEL 0
#define context_set_address_root(c, val) \
do {(c).lo |= (val) & PAGE_MASK_4K;} while (0)
#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
#define context_set_domain_id(c, val) \
do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
/*
* 0: readable
* 1: writable
* 2-6: reserved
* 7: super page
* 8-11: available
* 12-63: Host physcial address
*/
struct dma_pte {
u64 val;
};
#define dma_clear_pte(p) do {(p).val = 0;} while (0)
#define DMA_PTE_READ (1)
#define DMA_PTE_WRITE (2)
#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0)
#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
#define dma_set_pte_prot(p, prot) \
do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
#define dma_pte_addr(p) ((p).val & PAGE_MASK_4K)
#define dma_set_pte_addr(p, addr) do {\
(p).val |= ((addr) & PAGE_MASK_4K); } while (0)
#define dma_pte_present(p) (((p).val & 3) != 0)
struct intel_iommu;
struct dmar_domain {
int id; /* domain id */
struct intel_iommu *iommu; /* back pointer to owning iommu */
struct list_head devices; /* all devices' list */
struct iova_domain iovad; /* iova's that belong to this domain */
struct dma_pte *pgd; /* virtual address */
spinlock_t mapping_lock; /* page table lock */
int gaw; /* max guest address width */
/* adjusted guest address width, 0 is level 2 30-bit */
int agaw;
#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
int flags;
};
/* PCI domain-device relationship */
struct device_domain_info {
struct list_head link; /* link to domain siblings */
struct list_head global; /* link to global list */
u8 bus; /* PCI bus numer */
u8 devfn; /* PCI devfn number */
struct pci_dev *dev; /* it's NULL for PCIE-to-PCI bridge */
struct dmar_domain *domain; /* pointer to domain */
};
extern int init_dmars(void);
extern void free_dmar_iommu(struct intel_iommu *iommu);
extern int dmar_disabled;
#ifndef CONFIG_DMAR_GFX_WA
static inline void iommu_prepare_gfx_mapping(void)
{
return;
}
#endif /* !CONFIG_DMAR_GFX_WA */
#endif

397
drivers/pci/dmar.c
View File

@ -19,13 +19,16 @@
* Author: Shaohua Li <shaohua.li@intel.com>
* Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
*
* This file implements early detection/parsing of DMA Remapping Devices
* This file implements early detection/parsing of Remapping Devices
* reported to OS through BIOS via DMA remapping reporting (DMAR) ACPI
* tables.
*
* These routines are used by both DMA-remapping and Interrupt-remapping
*/
#include <linux/pci.h>
#include <linux/dmar.h>
#include <linux/timer.h>
#include "iova.h"
#include "intel-iommu.h"
@ -37,7 +40,6 @@
* these units are not supported by the architecture.
*/
LIST_HEAD(dmar_drhd_units);
LIST_HEAD(dmar_rmrr_units);
static struct acpi_table_header * __initdata dmar_tbl;
@ -53,11 +55,6 @@ static void __init dmar_register_drhd_unit(struct dmar_drhd_unit *drhd)
list_add(&drhd->list, &dmar_drhd_units);
}
static void __init dmar_register_rmrr_unit(struct dmar_rmrr_unit *rmrr)
{
list_add(&rmrr->list, &dmar_rmrr_units);
}
static int __init dmar_parse_one_dev_scope(struct acpi_dmar_device_scope *scope,
struct pci_dev **dev, u16 segment)
{
@ -172,19 +169,37 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
struct acpi_dmar_hardware_unit *drhd;
struct dmar_drhd_unit *dmaru;
int ret = 0;
static int include_all;
dmaru = kzalloc(sizeof(*dmaru), GFP_KERNEL);
if (!dmaru)
return -ENOMEM;
dmaru->hdr = header;
drhd = (struct acpi_dmar_hardware_unit *)header;
dmaru->reg_base_addr = drhd->address;
dmaru->include_all = drhd->flags & 0x1; /* BIT0: INCLUDE_ALL */
ret = alloc_iommu(dmaru);
if (ret) {
kfree(dmaru);
return ret;
}
dmar_register_drhd_unit(dmaru);
return 0;
}
static int __init
dmar_parse_dev(struct dmar_drhd_unit *dmaru)
{
struct acpi_dmar_hardware_unit *drhd;
static int include_all;
int ret;
drhd = (struct acpi_dmar_hardware_unit *) dmaru->hdr;
if (!dmaru->include_all)
ret = dmar_parse_dev_scope((void *)(drhd + 1),
((void *)drhd) + header->length,
((void *)drhd) + drhd->header.length,
&dmaru->devices_cnt, &dmaru->devices,
drhd->segment);
else {
@ -197,37 +212,59 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
include_all = 1;
}
if (ret || (dmaru->devices_cnt == 0 && !dmaru->include_all))
if (ret || (dmaru->devices_cnt == 0 && !dmaru->include_all)) {
list_del(&dmaru->list);
kfree(dmaru);
else
dmar_register_drhd_unit(dmaru);
}
return ret;
}
#ifdef CONFIG_DMAR
LIST_HEAD(dmar_rmrr_units);
static void __init dmar_register_rmrr_unit(struct dmar_rmrr_unit *rmrr)
{
list_add(&rmrr->list, &dmar_rmrr_units);
}
static int __init
dmar_parse_one_rmrr(struct acpi_dmar_header *header)
{
struct acpi_dmar_reserved_memory *rmrr;
struct dmar_rmrr_unit *rmrru;
int ret = 0;
rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL);
if (!rmrru)
return -ENOMEM;
rmrru->hdr = header;
rmrr = (struct acpi_dmar_reserved_memory *)header;
rmrru->base_address = rmrr->base_address;
rmrru->end_address = rmrr->end_address;
dmar_register_rmrr_unit(rmrru);
return 0;
}
static int __init
rmrr_parse_dev(struct dmar_rmrr_unit *rmrru)
{
struct acpi_dmar_reserved_memory *rmrr;
int ret;
rmrr = (struct acpi_dmar_reserved_memory *) rmrru->hdr;
ret = dmar_parse_dev_scope((void *)(rmrr + 1),
((void *)rmrr) + header->length,
((void *)rmrr) + rmrr->header.length,
&rmrru->devices_cnt, &rmrru->devices, rmrr->segment);
if (ret || (rmrru->devices_cnt == 0))
if (ret || (rmrru->devices_cnt == 0)) {
list_del(&rmrru->list);
kfree(rmrru);
else
dmar_register_rmrr_unit(rmrru);
}
return ret;
}
#endif
static void __init
dmar_table_print_dmar_entry(struct acpi_dmar_header *header)
@ -252,6 +289,7 @@ dmar_table_print_dmar_entry(struct acpi_dmar_header *header)
}
}
/**
* parse_dmar_table - parses the DMA reporting table
*/
@ -284,7 +322,9 @@ parse_dmar_table(void)
ret = dmar_parse_one_drhd(entry_header);
break;
case ACPI_DMAR_TYPE_RESERVED_MEMORY:
#ifdef CONFIG_DMAR
ret = dmar_parse_one_rmrr(entry_header);
#endif
break;
default:
printk(KERN_WARNING PREFIX
@ -300,15 +340,77 @@ parse_dmar_table(void)
return ret;
}
int dmar_pci_device_match(struct pci_dev *devices[], int cnt,
struct pci_dev *dev)
{
int index;
while (dev) {
for (index = 0; index < cnt; index++)
if (dev == devices[index])
return 1;
/* Check our parent */
dev = dev->bus->self;
}
return 0;
}
struct dmar_drhd_unit *
dmar_find_matched_drhd_unit(struct pci_dev *dev)
{
struct dmar_drhd_unit *drhd = NULL;
list_for_each_entry(drhd, &dmar_drhd_units, list) {
if (drhd->include_all || dmar_pci_device_match(drhd->devices,
drhd->devices_cnt, dev))
return drhd;
}
return NULL;
}
int __init dmar_dev_scope_init(void)
{
struct dmar_drhd_unit *drhd;
int ret = -ENODEV;
for_each_drhd_unit(drhd) {
ret = dmar_parse_dev(drhd);
if (ret)
return ret;
}
#ifdef CONFIG_DMAR
{
struct dmar_rmrr_unit *rmrr;
for_each_rmrr_units(rmrr) {
ret = rmrr_parse_dev(rmrr);
if (ret)
return ret;
}
}
#endif
return ret;
}
int __init dmar_table_init(void)
{
static int dmar_table_initialized;
int ret;
if (dmar_table_initialized)
return 0;
dmar_table_initialized = 1;
ret = parse_dmar_table();
if (ret) {
printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
if (ret != -ENODEV)
printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
return ret;
}
@ -317,9 +419,14 @@ int __init dmar_table_init(void)
return -ENODEV;
}
#ifdef CONFIG_DMAR
if (list_empty(&dmar_rmrr_units))
printk(KERN_INFO PREFIX "No RMRR found\n");
#endif
#ifdef CONFIG_INTR_REMAP
parse_ioapics_under_ir();
#endif
return 0;
}
@ -341,3 +448,255 @@ int __init early_dmar_detect(void)
return (ACPI_SUCCESS(status) ? 1 : 0);
}
void __init detect_intel_iommu(void)
{
int ret;
ret = early_dmar_detect();
#ifdef CONFIG_DMAR
{
struct acpi_table_dmar *dmar;
/*
* for now we will disable dma-remapping when interrupt
* remapping is enabled.
* When support for queued invalidation for IOTLB invalidation
* is added, we will not need this any more.
*/
dmar = (struct acpi_table_dmar *) dmar_tbl;
if (ret && cpu_has_x2apic && dmar->flags & 0x1) {
printk(KERN_INFO
"Queued invalidation will be enabled to support "
"x2apic and Intr-remapping.\n");
printk(KERN_INFO
"Disabling IOMMU detection, because of missing "
"queued invalidation support for IOTLB "
"invalidation\n");
printk(KERN_INFO
"Use \"nox2apic\", if you want to use Intel "
" IOMMU for DMA-remapping and don't care about "
" x2apic support\n");
dmar_disabled = 1;
return;
}
if (ret && !no_iommu && !iommu_detected && !swiotlb &&
!dmar_disabled)
iommu_detected = 1;
}
#endif
}
int alloc_iommu(struct dmar_drhd_unit *drhd)
{
struct intel_iommu *iommu;
int map_size;
u32 ver;
static int iommu_allocated = 0;
iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (!iommu)
return -ENOMEM;
iommu->seq_id = iommu_allocated++;
iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K);
if (!iommu->reg) {
printk(KERN_ERR "IOMMU: can't map the region\n");
goto error;
}
iommu->cap = dmar_readq(iommu->reg + DMAR_CAP_REG);
iommu->ecap = dmar_readq(iommu->reg + DMAR_ECAP_REG);
/* the registers might be more than one page */
map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
cap_max_fault_reg_offset(iommu->cap));
map_size = PAGE_ALIGN_4K(map_size);
if (map_size > PAGE_SIZE_4K) {
iounmap(iommu->reg);
iommu->reg = ioremap(drhd->reg_base_addr, map_size);
if (!iommu->reg) {
printk(KERN_ERR "IOMMU: can't map the region\n");
goto error;
}
}
ver = readl(iommu->reg + DMAR_VER_REG);
pr_debug("IOMMU %llx: ver %d:%d cap %llx ecap %llx\n",
drhd->reg_base_addr, DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
iommu->cap, iommu->ecap);
spin_lock_init(&iommu->register_lock);
drhd->iommu = iommu;
return 0;
error:
kfree(iommu);
return -1;
}
void free_iommu(struct intel_iommu *iommu)
{
if (!iommu)
return;
#ifdef CONFIG_DMAR
free_dmar_iommu(iommu);
#endif
if (iommu->reg)
iounmap(iommu->reg);
kfree(iommu);
}
/*
* Reclaim all the submitted descriptors which have completed its work.
*/
static inline void reclaim_free_desc(struct q_inval *qi)
{
while (qi->desc_status[qi->free_tail] == QI_DONE) {
qi->desc_status[qi->free_tail] = QI_FREE;
qi->free_tail = (qi->free_tail + 1) % QI_LENGTH;
qi->free_cnt++;
}
}
/*
* Submit the queued invalidation descriptor to the remapping
* hardware unit and wait for its completion.
*/
void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu)
{
struct q_inval *qi = iommu->qi;
struct qi_desc *hw, wait_desc;
int wait_index, index;
unsigned long flags;
if (!qi)
return;
hw = qi->desc;
spin_lock(&qi->q_lock);
while (qi->free_cnt < 3) {
spin_unlock(&qi->q_lock);
cpu_relax();
spin_lock(&qi->q_lock);
}
index = qi->free_head;
wait_index = (index + 1) % QI_LENGTH;
qi->desc_status[index] = qi->desc_status[wait_index] = QI_IN_USE;
hw[index] = *desc;
wait_desc.low = QI_IWD_STATUS_DATA(2) | QI_IWD_STATUS_WRITE | QI_IWD_TYPE;
wait_desc.high = virt_to_phys(&qi->desc_status[wait_index]);
hw[wait_index] = wait_desc;
__iommu_flush_cache(iommu, &hw[index], sizeof(struct qi_desc));
__iommu_flush_cache(iommu, &hw[wait_index], sizeof(struct qi_desc));
qi->free_head = (qi->free_head + 2) % QI_LENGTH;
qi->free_cnt -= 2;
spin_lock_irqsave(&iommu->register_lock, flags);
/*
* update the HW tail register indicating the presence of
* new descriptors.
*/
writel(qi->free_head << 4, iommu->reg + DMAR_IQT_REG);
spin_unlock_irqrestore(&iommu->register_lock, flags);
while (qi->desc_status[wait_index] != QI_DONE) {
spin_unlock(&qi->q_lock);
cpu_relax();
spin_lock(&qi->q_lock);
}
qi->desc_status[index] = QI_DONE;
reclaim_free_desc(qi);
spin_unlock(&qi->q_lock);
}
/*
* Flush the global interrupt entry cache.
*/
void qi_global_iec(struct intel_iommu *iommu)
{
struct qi_desc desc;
desc.low = QI_IEC_TYPE;
desc.high = 0;
qi_submit_sync(&desc, iommu);
}
/*
* Enable Queued Invalidation interface. This is a must to support
* interrupt-remapping. Also used by DMA-remapping, which replaces
* register based IOTLB invalidation.
*/
int dmar_enable_qi(struct intel_iommu *iommu)
{
u32 cmd, sts;
unsigned long flags;
struct q_inval *qi;
if (!ecap_qis(iommu->ecap))
return -ENOENT;
/*
* queued invalidation is already setup and enabled.
*/
if (iommu->qi)
return 0;
iommu->qi = kmalloc(sizeof(*qi), GFP_KERNEL);
if (!iommu->qi)
return -ENOMEM;
qi = iommu->qi;
qi->desc = (void *)(get_zeroed_page(GFP_KERNEL));
if (!qi->desc) {
kfree(qi);
iommu->qi = 0;
return -ENOMEM;
}
qi->desc_status = kmalloc(QI_LENGTH * sizeof(int), GFP_KERNEL);
if (!qi->desc_status) {
free_page((unsigned long) qi->desc);
kfree(qi);
iommu->qi = 0;
return -ENOMEM;
}
qi->free_head = qi->free_tail = 0;
qi->free_cnt = QI_LENGTH;
spin_lock_init(&qi->q_lock);
spin_lock_irqsave(&iommu->register_lock, flags);
/* write zero to the tail reg */
writel(0, iommu->reg + DMAR_IQT_REG);
dmar_writeq(iommu->reg + DMAR_IQA_REG, virt_to_phys(qi->desc));
cmd = iommu->gcmd | DMA_GCMD_QIE;
iommu->gcmd |= DMA_GCMD_QIE;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
/* Make sure hardware complete it */
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_QIES), sts);
spin_unlock_irqrestore(&iommu->register_lock, flags);
return 0;
}

164
drivers/pci/intel-iommu.c
View File

@ -49,8 +49,6 @@
#define DEFAULT_DOMAIN_ADDRESS_WIDTH 48
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */
#define DOMAIN_MAX_ADDR(gaw) ((((u64)1) << gaw) - 1)
@ -58,8 +56,6 @@ static void flush_unmaps_timeout(unsigned long data);
DEFINE_TIMER(unmap_timer, flush_unmaps_timeout, 0, 0);
static struct intel_iommu *g_iommus;
#define HIGH_WATER_MARK 250
struct deferred_flush_tables {
int next;
@ -80,7 +76,7 @@ static long list_size;
static void domain_remove_dev_info(struct dmar_domain *domain);
static int dmar_disabled;
int dmar_disabled;
static int __initdata dmar_map_gfx = 1;
static int dmar_forcedac;
static int intel_iommu_strict;
@ -185,13 +181,6 @@ void free_iova_mem(struct iova *iova)
kmem_cache_free(iommu_iova_cache, iova);
}
static inline void __iommu_flush_cache(
struct intel_iommu *iommu, void *addr, int size)
{
if (!ecap_coherent(iommu->ecap))
clflush_cache_range(addr, size);
}
/* Gets context entry for a given bus and devfn */
static struct context_entry * device_to_context_entry(struct intel_iommu *iommu,
u8 bus, u8 devfn)
@ -488,19 +477,6 @@ static int iommu_alloc_root_entry(struct intel_iommu *iommu)
return 0;
}
#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
{\
cycles_t start_time = get_cycles();\
while (1) {\
sts = op (iommu->reg + offset);\
if (cond)\
break;\
if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
panic("DMAR hardware is malfunctioning\n");\
cpu_relax();\
}\
}
static void iommu_set_root_entry(struct intel_iommu *iommu)
{
void *addr;
@ -990,6 +966,8 @@ static int iommu_init_domains(struct intel_iommu *iommu)
return -ENOMEM;
}
spin_lock_init(&iommu->lock);
/*
* if Caching mode is set, then invalid translations are tagged
* with domainid 0. Hence we need to pre-allocate it.
@ -998,62 +976,15 @@ static int iommu_init_domains(struct intel_iommu *iommu)
set_bit(0, iommu->domain_ids);
return 0;
}
static struct intel_iommu *alloc_iommu(struct intel_iommu *iommu,
struct dmar_drhd_unit *drhd)
{
int ret;
int map_size;
u32 ver;
iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K);
if (!iommu->reg) {
printk(KERN_ERR "IOMMU: can't map the region\n");
goto error;
}
iommu->cap = dmar_readq(iommu->reg + DMAR_CAP_REG);
iommu->ecap = dmar_readq(iommu->reg + DMAR_ECAP_REG);
/* the registers might be more than one page */
map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
cap_max_fault_reg_offset(iommu->cap));
map_size = PAGE_ALIGN_4K(map_size);
if (map_size > PAGE_SIZE_4K) {
iounmap(iommu->reg);
iommu->reg = ioremap(drhd->reg_base_addr, map_size);
if (!iommu->reg) {
printk(KERN_ERR "IOMMU: can't map the region\n");
goto error;
}
}
ver = readl(iommu->reg + DMAR_VER_REG);
pr_debug("IOMMU %llx: ver %d:%d cap %llx ecap %llx\n",
drhd->reg_base_addr, DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
iommu->cap, iommu->ecap);
ret = iommu_init_domains(iommu);
if (ret)
goto error_unmap;
spin_lock_init(&iommu->lock);
spin_lock_init(&iommu->register_lock);
drhd->iommu = iommu;
return iommu;
error_unmap:
iounmap(iommu->reg);
error:
kfree(iommu);
return NULL;
}
static void domain_exit(struct dmar_domain *domain);
static void free_iommu(struct intel_iommu *iommu)
void free_dmar_iommu(struct intel_iommu *iommu)
{
struct dmar_domain *domain;
int i;
if (!iommu)
return;
i = find_first_bit(iommu->domain_ids, cap_ndoms(iommu->cap));
for (; i < cap_ndoms(iommu->cap); ) {
domain = iommu->domains[i];
@ -1078,10 +1009,6 @@ static void free_iommu(struct intel_iommu *iommu)
/* free context mapping */
free_context_table(iommu);
if (iommu->reg)
iounmap(iommu->reg);
kfree(iommu);
}
static struct dmar_domain * iommu_alloc_domain(struct intel_iommu *iommu)
@ -1426,37 +1353,6 @@ find_domain(struct pci_dev *pdev)
return NULL;
}
static int dmar_pci_device_match(struct pci_dev *devices[], int cnt,
struct pci_dev *dev)
{
int index;
while (dev) {
for (index = 0; index < cnt; index++)
if (dev == devices[index])
return 1;
/* Check our parent */
dev = dev->bus->self;
}
return 0;
}
static struct dmar_drhd_unit *
dmar_find_matched_drhd_unit(struct pci_dev *dev)
{
struct dmar_drhd_unit *drhd = NULL;
list_for_each_entry(drhd, &dmar_drhd_units, list) {
if (drhd->include_all || dmar_pci_device_match(drhd->devices,
drhd->devices_cnt, dev))
return drhd;
}
return NULL;
}
/* domain is initialized */
static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
{
@ -1729,8 +1625,6 @@ int __init init_dmars(void)
* endfor
*/
for_each_drhd_unit(drhd) {
if (drhd->ignored)
continue;
g_num_of_iommus++;
/*
* lock not needed as this is only incremented in the single
@ -1739,12 +1633,6 @@ int __init init_dmars(void)
*/
}
g_iommus = kzalloc(g_num_of_iommus * sizeof(*iommu), GFP_KERNEL);
if (!g_iommus) {
ret = -ENOMEM;
goto error;
}
deferred_flush = kzalloc(g_num_of_iommus *
sizeof(struct deferred_flush_tables), GFP_KERNEL);
if (!deferred_flush) {
@ -1752,16 +1640,15 @@ int __init init_dmars(void)
goto error;
}
i = 0;
for_each_drhd_unit(drhd) {
if (drhd->ignored)
continue;
iommu = alloc_iommu(&g_iommus[i], drhd);
i++;
if (!iommu) {
ret = -ENOMEM;
iommu = drhd->iommu;
ret = iommu_init_domains(iommu);
if (ret)
goto error;
}
/*
* TBD:
@ -1845,7 +1732,6 @@ error:
iommu = drhd->iommu;
free_iommu(iommu);
}
kfree(g_iommus);
return ret;
}
@ -2002,7 +1888,10 @@ static void flush_unmaps(void)
/* just flush them all */
for (i = 0; i < g_num_of_iommus; i++) {
if (deferred_flush[i].next) {
iommu_flush_iotlb_global(&g_iommus[i], 0);
struct intel_iommu *iommu =
deferred_flush[i].domain[0]->iommu;
iommu_flush_iotlb_global(iommu, 0);
for (j = 0; j < deferred_flush[i].next; j++) {
__free_iova(&deferred_flush[i].domain[j]->iovad,
deferred_flush[i].iova[j]);
@ -2032,7 +1921,8 @@ static void add_unmap(struct dmar_domain *dom, struct iova *iova)
if (list_size == HIGH_WATER_MARK)
flush_unmaps();
iommu_id = dom->iommu - g_iommus;
iommu_id = dom->iommu->seq_id;
next = deferred_flush[iommu_id].next;
deferred_flush[iommu_id].domain[next] = dom;
deferred_flush[iommu_id].iova[next] = iova;
@ -2348,15 +2238,6 @@ static void __init iommu_exit_mempool(void)
}
void __init detect_intel_iommu(void)
{
if (swiotlb || no_iommu || iommu_detected || dmar_disabled)
return;
if (early_dmar_detect()) {
iommu_detected = 1;
}
}
static void __init init_no_remapping_devices(void)
{
struct dmar_drhd_unit *drhd;
@ -2403,12 +2284,19 @@ int __init intel_iommu_init(void)
{
int ret = 0;
if (no_iommu || swiotlb || dmar_disabled)
return -ENODEV;
if (dmar_table_init())
return -ENODEV;
if (dmar_dev_scope_init())
return -ENODEV;
/*
* Check the need for DMA-remapping initialization now.
* Above initialization will also be used by Interrupt-remapping.
*/
if (no_iommu || swiotlb || dmar_disabled)
return -ENODEV;
iommu_init_mempool();
dmar_init_reserved_ranges();

245
drivers/pci/intel-iommu.h
View File

@ -27,19 +27,8 @@
#include <linux/sysdev.h>
#include "iova.h"
#include <linux/io.h>
/*
* We need a fixed PAGE_SIZE of 4K irrespective of
* arch PAGE_SIZE for IOMMU page tables.
*/
#define PAGE_SHIFT_4K (12)
#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K)
#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K)
#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K)
#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
#include <asm/cacheflush.h>
#include "dma_remapping.h"
/*
* Intel IOMMU register specification per version 1.0 public spec.
@ -63,6 +52,11 @@
#define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */
#define DMAR_PHMBASE_REG 0x70 /* pmrr high base addr */
#define DMAR_PHMLIMIT_REG 0x78 /* pmrr high limit */
#define DMAR_IQH_REG 0x80 /* Invalidation queue head register */
#define DMAR_IQT_REG 0x88 /* Invalidation queue tail register */
#define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */
#define DMAR_ICS_REG 0x98 /* Invalidation complete status register */
#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */
#define OFFSET_STRIDE (9)
/*
@ -126,6 +120,10 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define ecap_max_iotlb_offset(e) \
(ecap_iotlb_offset(e) + ecap_niotlb_iunits(e) * 16)
#define ecap_coherent(e) ((e) & 0x1)
#define ecap_qis(e) ((e) & 0x2)
#define ecap_eim_support(e) ((e >> 4) & 0x1)
#define ecap_ir_support(e) ((e >> 3) & 0x1)
#define ecap_max_handle_mask(e) ((e >> 20) & 0xf)
/* IOTLB_REG */
@ -141,6 +139,17 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define DMA_TLB_IH_NONLEAF (((u64)1) << 6)
#define DMA_TLB_MAX_SIZE (0x3f)
/* INVALID_DESC */
#define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3)
#define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 3)
#define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 3)
#define DMA_ID_TLB_READ_DRAIN (((u64)1) << 7)
#define DMA_ID_TLB_WRITE_DRAIN (((u64)1) << 6)
#define DMA_ID_TLB_DID(id) (((u64)((id & 0xffff) << 16)))
#define DMA_ID_TLB_IH_NONLEAF (((u64)1) << 6)
#define DMA_ID_TLB_ADDR(addr) (addr)
#define DMA_ID_TLB_ADDR_MASK(mask) (mask)
/* PMEN_REG */
#define DMA_PMEN_EPM (((u32)1)<<31)
#define DMA_PMEN_PRS (((u32)1)<<0)
@ -151,6 +160,9 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define DMA_GCMD_SFL (((u32)1) << 29)
#define DMA_GCMD_EAFL (((u32)1) << 28)
#define DMA_GCMD_WBF (((u32)1) << 27)
#define DMA_GCMD_QIE (((u32)1) << 26)
#define DMA_GCMD_SIRTP (((u32)1) << 24)
#define DMA_GCMD_IRE (((u32) 1) << 25)
/* GSTS_REG */
#define DMA_GSTS_TES (((u32)1) << 31)
@ -158,6 +170,9 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define DMA_GSTS_FLS (((u32)1) << 29)
#define DMA_GSTS_AFLS (((u32)1) << 28)
#define DMA_GSTS_WBFS (((u32)1) << 27)
#define DMA_GSTS_QIES (((u32)1) << 26)
#define DMA_GSTS_IRTPS (((u32)1) << 24)
#define DMA_GSTS_IRES (((u32)1) << 25)
/* CCMD_REG */
#define DMA_CCMD_ICC (((u64)1) << 63)
@ -187,158 +202,106 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
#define dma_frcd_source_id(c) (c & 0xffff)
#define dma_frcd_page_addr(d) (d & (((u64)-1) << 12)) /* low 64 bit */
/*
* 0: Present
* 1-11: Reserved
* 12-63: Context Ptr (12 - (haw-1))
* 64-127: Reserved
*/
struct root_entry {
u64 val;
u64 rsvd1;
};
#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
static inline bool root_present(struct root_entry *root)
{
return (root->val & 1);
}
static inline void set_root_present(struct root_entry *root)
{
root->val |= 1;
}
static inline void set_root_value(struct root_entry *root, unsigned long value)
{
root->val |= value & PAGE_MASK_4K;
#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */
#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
{\
cycles_t start_time = get_cycles();\
while (1) {\
sts = op (iommu->reg + offset);\
if (cond)\
break;\
if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
panic("DMAR hardware is malfunctioning\n");\
cpu_relax();\
}\
}
struct context_entry;
static inline struct context_entry *
get_context_addr_from_root(struct root_entry *root)
{
return (struct context_entry *)
(root_present(root)?phys_to_virt(
root->val & PAGE_MASK_4K):
NULL);
}
#define QI_LENGTH 256 /* queue length */
/*
* low 64 bits:
* 0: present
* 1: fault processing disable
* 2-3: translation type
* 12-63: address space root
* high 64 bits:
* 0-2: address width
* 3-6: aval
* 8-23: domain id
*/
struct context_entry {
u64 lo;
u64 hi;
};
#define context_present(c) ((c).lo & 1)
#define context_fault_disable(c) (((c).lo >> 1) & 1)
#define context_translation_type(c) (((c).lo >> 2) & 3)
#define context_address_root(c) ((c).lo & PAGE_MASK_4K)
#define context_address_width(c) ((c).hi & 7)
#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
#define context_set_present(c) do {(c).lo |= 1;} while (0)
#define context_set_fault_enable(c) \
do {(c).lo &= (((u64)-1) << 2) | 1;} while (0)
#define context_set_translation_type(c, val) \
do { \
(c).lo &= (((u64)-1) << 4) | 3; \
(c).lo |= ((val) & 3) << 2; \
} while (0)
#define CONTEXT_TT_MULTI_LEVEL 0
#define context_set_address_root(c, val) \
do {(c).lo |= (val) & PAGE_MASK_4K;} while (0)
#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
#define context_set_domain_id(c, val) \
do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
#define context_clear_entry(c) do {(c).lo = 0; (c).hi = 0;} while (0)
/*
* 0: readable
* 1: writable
* 2-6: reserved
* 7: super page
* 8-11: available
* 12-63: Host physcial address
*/
struct dma_pte {
u64 val;
};
#define dma_clear_pte(p) do {(p).val = 0;} while (0)
#define DMA_PTE_READ (1)
#define DMA_PTE_WRITE (2)
#define dma_set_pte_readable(p) do {(p).val |= DMA_PTE_READ;} while (0)
#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
#define dma_set_pte_prot(p, prot) \
do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
#define dma_pte_addr(p) ((p).val & PAGE_MASK_4K)
#define dma_set_pte_addr(p, addr) do {\
(p).val |= ((addr) & PAGE_MASK_4K); } while (0)
#define dma_pte_present(p) (((p).val & 3) != 0)
struct intel_iommu;
struct dmar_domain {
int id; /* domain id */
struct intel_iommu *iommu; /* back pointer to owning iommu */
struct list_head devices; /* all devices' list */
struct iova_domain iovad; /* iova's that belong to this domain */
struct dma_pte *pgd; /* virtual address */
spinlock_t mapping_lock; /* page table lock */
int gaw; /* max guest address width */
/* adjusted guest address width, 0 is level 2 30-bit */
int agaw;
#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
int flags;
enum {
QI_FREE,
QI_IN_USE,
QI_DONE
};
/* PCI domain-device relationship */
struct device_domain_info {
struct list_head link; /* link to domain siblings */
struct list_head global; /* link to global list */
u8 bus; /* PCI bus numer */
u8 devfn; /* PCI devfn number */
struct pci_dev *dev; /* it's NULL for PCIE-to-PCI bridge */
struct dmar_domain *domain; /* pointer to domain */
#define QI_CC_TYPE 0x1
#define QI_IOTLB_TYPE 0x2
#define QI_DIOTLB_TYPE 0x3
#define QI_IEC_TYPE 0x4
#define QI_IWD_TYPE 0x5
#define QI_IEC_SELECTIVE (((u64)1) << 4)
#define QI_IEC_IIDEX(idx) (((u64)(idx & 0xffff) << 32))
#define QI_IEC_IM(m) (((u64)(m & 0x1f) << 27))
#define QI_IWD_STATUS_DATA(d) (((u64)d) << 32)
#define QI_IWD_STATUS_WRITE (((u64)1) << 5)
struct qi_desc {
u64 low, high;
};
extern int init_dmars(void);
struct q_inval {
spinlock_t q_lock;
struct qi_desc *desc; /* invalidation queue */
int *desc_status; /* desc status */
int free_head; /* first free entry */
int free_tail; /* last free entry */
int free_cnt;
};
#ifdef CONFIG_INTR_REMAP
/* 1MB - maximum possible interrupt remapping table size */
#define INTR_REMAP_PAGE_ORDER 8
#define INTR_REMAP_TABLE_REG_SIZE 0xf
#define INTR_REMAP_TABLE_ENTRIES 65536
struct ir_table {
struct irte *base;
};
#endif
struct intel_iommu {
void __iomem *reg; /* Pointer to hardware regs, virtual addr */
u64 cap;
u64 ecap;
unsigned long *domain_ids; /* bitmap of domains */
struct dmar_domain **domains; /* ptr to domains */
int seg;
u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */
spinlock_t lock; /* protect context, domain ids */
spinlock_t register_lock; /* protect register handling */
int seq_id; /* sequence id of the iommu */
#ifdef CONFIG_DMAR
unsigned long *domain_ids; /* bitmap of domains */
struct dmar_domain **domains; /* ptr to domains */
spinlock_t lock; /* protect context, domain ids */
struct root_entry *root_entry; /* virtual address */
unsigned int irq;
unsigned char name[7]; /* Device Name */
struct msi_msg saved_msg;
struct sys_device sysdev;
#endif
struct q_inval *qi; /* Queued invalidation info */
#ifdef CONFIG_INTR_REMAP
struct ir_table *ir_table; /* Interrupt remapping info */
#endif
};
#ifndef CONFIG_DMAR_GFX_WA
static inline void iommu_prepare_gfx_mapping(void)
static inline void __iommu_flush_cache(
struct intel_iommu *iommu, void *addr, int size)
{
return;
if (!ecap_coherent(iommu->ecap))
clflush_cache_range(addr, size);
}
#endif /* !CONFIG_DMAR_GFX_WA */
extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);
extern int alloc_iommu(struct dmar_drhd_unit *drhd);
extern void free_iommu(struct intel_iommu *iommu);
extern int dmar_enable_qi(struct intel_iommu *iommu);
extern void qi_global_iec(struct intel_iommu *iommu);
extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
#endif

471
drivers/pci/intr_remapping.c Normal file
View File

@ -0,0 +1,471 @@
#include <linux/dmar.h>
#include <linux/spinlock.h>
#include <linux/jiffies.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <asm/io_apic.h>
#include "intel-iommu.h"
#include "intr_remapping.h"
static struct ioapic_scope ir_ioapic[MAX_IO_APICS];
static int ir_ioapic_num;
int intr_remapping_enabled;
static struct {
struct intel_iommu *iommu;
u16 irte_index;
u16 sub_handle;
u8 irte_mask;
} irq_2_iommu[NR_IRQS];
static DEFINE_SPINLOCK(irq_2_ir_lock);
int irq_remapped(int irq)
{
if (irq > NR_IRQS)
return 0;
if (!irq_2_iommu[irq].iommu)
return 0;
return 1;
}
int get_irte(int irq, struct irte *entry)
{
int index;
if (!entry || irq > NR_IRQS)
return -1;
spin_lock(&irq_2_ir_lock);
if (!irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
index = irq_2_iommu[irq].irte_index + irq_2_iommu[irq].sub_handle;
*entry = *(irq_2_iommu[irq].iommu->ir_table->base + index);
spin_unlock(&irq_2_ir_lock);
return 0;
}
int alloc_irte(struct intel_iommu *iommu, int irq, u16 count)
{
struct ir_table *table = iommu->ir_table;
u16 index, start_index;
unsigned int mask = 0;
int i;
if (!count)
return -1;
/*
* start the IRTE search from index 0.
*/
index = start_index = 0;
if (count > 1) {
count = __roundup_pow_of_two(count);
mask = ilog2(count);
}
if (mask > ecap_max_handle_mask(iommu->ecap)) {
printk(KERN_ERR
"Requested mask %x exceeds the max invalidation handle"
" mask value %Lx\n", mask,
ecap_max_handle_mask(iommu->ecap));
return -1;
}
spin_lock(&irq_2_ir_lock);
do {
for (i = index; i < index + count; i++)
if (table->base[i].present)
break;
/* empty index found */
if (i == index + count)
break;
index = (index + count) % INTR_REMAP_TABLE_ENTRIES;
if (index == start_index) {
spin_unlock(&irq_2_ir_lock);
printk(KERN_ERR "can't allocate an IRTE\n");
return -1;
}
} while (1);
for (i = index; i < index + count; i++)
table->base[i].present = 1;
irq_2_iommu[irq].iommu = iommu;
irq_2_iommu[irq].irte_index = index;
irq_2_iommu[irq].sub_handle = 0;
irq_2_iommu[irq].irte_mask = mask;
spin_unlock(&irq_2_ir_lock);
return index;
}
static void qi_flush_iec(struct intel_iommu *iommu, int index, int mask)
{
struct qi_desc desc;
desc.low = QI_IEC_IIDEX(index) | QI_IEC_TYPE | QI_IEC_IM(mask)
| QI_IEC_SELECTIVE;
desc.high = 0;
qi_submit_sync(&desc, iommu);
}
int map_irq_to_irte_handle(int irq, u16 *sub_handle)
{
int index;
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || !irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
*sub_handle = irq_2_iommu[irq].sub_handle;
index = irq_2_iommu[irq].irte_index;
spin_unlock(&irq_2_ir_lock);
return index;
}
int set_irte_irq(int irq, struct intel_iommu *iommu, u16 index, u16 subhandle)
{
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
irq_2_iommu[irq].iommu = iommu;
irq_2_iommu[irq].irte_index = index;
irq_2_iommu[irq].sub_handle = subhandle;
irq_2_iommu[irq].irte_mask = 0;
spin_unlock(&irq_2_ir_lock);
return 0;
}
int clear_irte_irq(int irq, struct intel_iommu *iommu, u16 index)
{
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || !irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
irq_2_iommu[irq].iommu = NULL;
irq_2_iommu[irq].irte_index = 0;
irq_2_iommu[irq].sub_handle = 0;
irq_2_iommu[irq].irte_mask = 0;
spin_unlock(&irq_2_ir_lock);
return 0;
}
int modify_irte(int irq, struct irte *irte_modified)
{
int index;
struct irte *irte;
struct intel_iommu *iommu;
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || !irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
iommu = irq_2_iommu[irq].iommu;
index = irq_2_iommu[irq].irte_index + irq_2_iommu[irq].sub_handle;
irte = &iommu->ir_table->base[index];
set_64bit((unsigned long *)irte, irte_modified->low | (1 << 1));
__iommu_flush_cache(iommu, irte, sizeof(*irte));
qi_flush_iec(iommu, index, 0);
spin_unlock(&irq_2_ir_lock);
return 0;
}
int flush_irte(int irq)
{
int index;
struct intel_iommu *iommu;
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || !irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
iommu = irq_2_iommu[irq].iommu;
index = irq_2_iommu[irq].irte_index + irq_2_iommu[irq].sub_handle;
qi_flush_iec(iommu, index, irq_2_iommu[irq].irte_mask);
spin_unlock(&irq_2_ir_lock);
return 0;
}
struct intel_iommu *map_ioapic_to_ir(int apic)
{
int i;
for (i = 0; i < MAX_IO_APICS; i++)
if (ir_ioapic[i].id == apic)
return ir_ioapic[i].iommu;
return NULL;
}
struct intel_iommu *map_dev_to_ir(struct pci_dev *dev)
{
struct dmar_drhd_unit *drhd;
drhd = dmar_find_matched_drhd_unit(dev);
if (!drhd)
return NULL;
return drhd->iommu;
}
int free_irte(int irq)
{
int index, i;
struct irte *irte;
struct intel_iommu *iommu;
spin_lock(&irq_2_ir_lock);
if (irq >= NR_IRQS || !irq_2_iommu[irq].iommu) {
spin_unlock(&irq_2_ir_lock);
return -1;
}
iommu = irq_2_iommu[irq].iommu;
index = irq_2_iommu[irq].irte_index + irq_2_iommu[irq].sub_handle;
irte = &iommu->ir_table->base[index];
if (!irq_2_iommu[irq].sub_handle) {
for (i = 0; i < (1 << irq_2_iommu[irq].irte_mask); i++)
set_64bit((unsigned long *)irte, 0);
qi_flush_iec(iommu, index, irq_2_iommu[irq].irte_mask);
}
irq_2_iommu[irq].iommu = NULL;
irq_2_iommu[irq].irte_index = 0;
irq_2_iommu[irq].sub_handle = 0;
irq_2_iommu[irq].irte_mask = 0;
spin_unlock(&irq_2_ir_lock);
return 0;
}
static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode)
{
u64 addr;
u32 cmd, sts;
unsigned long flags;
addr = virt_to_phys((void *)iommu->ir_table->base);
spin_lock_irqsave(&iommu->register_lock, flags);
dmar_writeq(iommu->reg + DMAR_IRTA_REG,
(addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE);
/* Set interrupt-remapping table pointer */
cmd = iommu->gcmd | DMA_GCMD_SIRTP;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_IRTPS), sts);
spin_unlock_irqrestore(&iommu->register_lock, flags);
/*
* global invalidation of interrupt entry cache before enabling
* interrupt-remapping.
*/
qi_global_iec(iommu);
spin_lock_irqsave(&iommu->register_lock, flags);
/* Enable interrupt-remapping */
cmd = iommu->gcmd | DMA_GCMD_IRE;
iommu->gcmd |= DMA_GCMD_IRE;
writel(cmd, iommu->reg + DMAR_GCMD_REG);
IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG,
readl, (sts & DMA_GSTS_IRES), sts);
spin_unlock_irqrestore(&iommu->register_lock, flags);
}
static int setup_intr_remapping(struct intel_iommu *iommu, int mode)
{
struct ir_table *ir_table;
struct page *pages;
ir_table = iommu->ir_table = kzalloc(sizeof(struct ir_table),
GFP_KERNEL);
if (!iommu->ir_table)
return -ENOMEM;
pages = alloc_pages(GFP_KERNEL | __GFP_ZERO, INTR_REMAP_PAGE_ORDER);
if (!pages) {
printk(KERN_ERR "failed to allocate pages of order %d\n",
INTR_REMAP_PAGE_ORDER);
kfree(iommu->ir_table);
return -ENOMEM;
}
ir_table->base = page_address(pages);
iommu_set_intr_remapping(iommu, mode);
return 0;
}
int __init enable_intr_remapping(int eim)
{
struct dmar_drhd_unit *drhd;
int setup = 0;
/*
* check for the Interrupt-remapping support
*/
for_each_drhd_unit(drhd) {
struct intel_iommu *iommu = drhd->iommu;
if (!ecap_ir_support(iommu->ecap))
continue;
if (eim && !ecap_eim_support(iommu->ecap)) {
printk(KERN_INFO "DRHD %Lx: EIM not supported by DRHD, "
" ecap %Lx\n", drhd->reg_base_addr, iommu->ecap);
return -1;
}
}
/*
* Enable queued invalidation for all the DRHD's.
*/
for_each_drhd_unit(drhd) {
int ret;
struct intel_iommu *iommu = drhd->iommu;
ret = dmar_enable_qi(iommu);
if (ret) {
printk(KERN_ERR "DRHD %Lx: failed to enable queued, "
" invalidation, ecap %Lx, ret %d\n",
drhd->reg_base_addr, iommu->ecap, ret);
return -1;
}
}
/*
* Setup Interrupt-remapping for all the DRHD's now.
*/
for_each_drhd_unit(drhd) {
struct intel_iommu *iommu = drhd->iommu;
if (!ecap_ir_support(iommu->ecap))
continue;
if (setup_intr_remapping(iommu, eim))
goto error;
setup = 1;
}
if (!setup)
goto error;
intr_remapping_enabled = 1;
return 0;
error:
/*
* handle error condition gracefully here!
*/
return -1;
}
static int ir_parse_ioapic_scope(struct acpi_dmar_header *header,
struct intel_iommu *iommu)
{
struct acpi_dmar_hardware_unit *drhd;
struct acpi_dmar_device_scope *scope;
void *start, *end;
drhd = (struct acpi_dmar_hardware_unit *)header;
start = (void *)(drhd + 1);
end = ((void *)drhd) + header->length;
while (start < end) {
scope = start;
if (scope->entry_type == ACPI_DMAR_SCOPE_TYPE_IOAPIC) {
if (ir_ioapic_num == MAX_IO_APICS) {
printk(KERN_WARNING "Exceeded Max IO APICS\n");
return -1;
}
printk(KERN_INFO "IOAPIC id %d under DRHD base"
" 0x%Lx\n", scope->enumeration_id,
drhd->address);
ir_ioapic[ir_ioapic_num].iommu = iommu;
ir_ioapic[ir_ioapic_num].id = scope->enumeration_id;
ir_ioapic_num++;
}
start += scope->length;
}
return 0;
}
/*
* Finds the assocaition between IOAPIC's and its Interrupt-remapping
* hardware unit.
*/
int __init parse_ioapics_under_ir(void)
{
struct dmar_drhd_unit *drhd;
int ir_supported = 0;
for_each_drhd_unit(drhd) {
struct intel_iommu *iommu = drhd->iommu;
if (ecap_ir_support(iommu->ecap)) {
if (ir_parse_ioapic_scope(drhd->hdr, iommu))
return -1;
ir_supported = 1;
}
}
if (ir_supported && ir_ioapic_num != nr_ioapics) {
printk(KERN_WARNING
"Not all IO-APIC's listed under remapping hardware\n");
return -1;
}
return ir_supported;
}

8
drivers/pci/intr_remapping.h Normal file
View File

@ -0,0 +1,8 @@
#include "intel-iommu.h"
struct ioapic_scope {
struct intel_iommu *iommu;
unsigned int id;
};
#define IR_X2APIC_MODE(mode) (mode ? (1 << 11) : 0)

6
include/asm-x86/a.out-core.h
View File

@ -9,8 +9,8 @@
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_A_OUT_CORE_H
#define _ASM_A_OUT_CORE_H
#ifndef ASM_X86__A_OUT_CORE_H
#define ASM_X86__A_OUT_CORE_H
#ifdef __KERNEL__
#ifdef CONFIG_X86_32
@ -70,4 +70,4 @@ static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
#endif /* CONFIG_X86_32 */
#endif /* __KERNEL__ */
#endif /* _ASM_A_OUT_CORE_H */
#endif /* ASM_X86__A_OUT_CORE_H */

6
include/asm-x86/a.out.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_A_OUT_H
#define _ASM_X86_A_OUT_H
#ifndef ASM_X86__A_OUT_H
#define ASM_X86__A_OUT_H
struct exec
{
@ -17,4 +17,4 @@ struct exec
#define N_DRSIZE(a) ((a).a_drsize)
#define N_SYMSIZE(a) ((a).a_syms)
#endif /* _ASM_X86_A_OUT_H */
#endif /* ASM_X86__A_OUT_H */

6
include/asm-x86/acpi.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_ACPI_H
#define _ASM_X86_ACPI_H
#ifndef ASM_X86__ACPI_H
#define ASM_X86__ACPI_H
/*
* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
@ -173,4 +173,4 @@ static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
#define acpi_unlazy_tlb(x) leave_mm(x)
#endif /*__X86_ASM_ACPI_H*/
#endif /* ASM_X86__ACPI_H */

6
include/asm-x86/agp.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_AGP_H
#define _ASM_X86_AGP_H
#ifndef ASM_X86__AGP_H
#define ASM_X86__AGP_H
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
@ -32,4 +32,4 @@
#define free_gatt_pages(table, order) \
free_pages((unsigned long)(table), (order))
#endif
#endif /* ASM_X86__AGP_H */

6
include/asm-x86/alternative.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_ALTERNATIVE_H
#define _ASM_X86_ALTERNATIVE_H
#ifndef ASM_X86__ALTERNATIVE_H
#define ASM_X86__ALTERNATIVE_H
#include <linux/types.h>
#include <linux/stddef.h>
@ -180,4 +180,4 @@ extern void add_nops(void *insns, unsigned int len);
extern void *text_poke(void *addr, const void *opcode, size_t len);
extern void *text_poke_early(void *addr, const void *opcode, size_t len);
#endif /* _ASM_X86_ALTERNATIVE_H */
#endif /* ASM_X86__ALTERNATIVE_H */

6
include/asm-x86/amd_iommu.h
View File

@ -17,8 +17,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _ASM_X86_AMD_IOMMU_H
#define _ASM_X86_AMD_IOMMU_H
#ifndef ASM_X86__AMD_IOMMU_H
#define ASM_X86__AMD_IOMMU_H
#ifdef CONFIG_AMD_IOMMU
extern int amd_iommu_init(void);
@ -29,4 +29,4 @@ static inline int amd_iommu_init(void) { return -ENODEV; }
static inline void amd_iommu_detect(void) { }
#endif
#endif
#endif /* ASM_X86__AMD_IOMMU_H */

6
include/asm-x86/amd_iommu_types.h
View File

@ -17,8 +17,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __AMD_IOMMU_TYPES_H__
#define __AMD_IOMMU_TYPES_H__
#ifndef ASM_X86__AMD_IOMMU_TYPES_H
#define ASM_X86__AMD_IOMMU_TYPES_H
#include <linux/types.h>
#include <linux/list.h>
@ -341,4 +341,4 @@ static inline u16 calc_devid(u8 bus, u8 devfn)
return (((u16)bus) << 8) | devfn;
}
#endif
#endif /* ASM_X86__AMD_IOMMU_TYPES_H */

76
include/asm-x86/apic.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_APIC_H
#define _ASM_X86_APIC_H
#ifndef ASM_X86__APIC_H
#define ASM_X86__APIC_H
#include <linux/pm.h>
#include <linux/delay.h>
@ -9,6 +9,8 @@
#include <asm/apicdef.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/cpufeature.h>
#include <asm/msr.h>
#define ARCH_APICTIMER_STOPS_ON_C3 1
@ -47,15 +49,18 @@ extern int disable_apic;
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
#define apic_write native_apic_write
#define apic_read native_apic_read
#define setup_boot_clock setup_boot_APIC_clock
#define setup_secondary_clock setup_secondary_APIC_clock
#endif
extern int is_vsmp_box(void);
extern void xapic_wait_icr_idle(void);
extern u32 safe_xapic_wait_icr_idle(void);
extern u64 xapic_icr_read(void);
extern void xapic_icr_write(u32, u32);
extern int setup_profiling_timer(unsigned int);
static inline void native_apic_write(unsigned long reg, u32 v)
static inline void native_apic_mem_write(u32 reg, u32 v)
{
volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
@ -64,15 +69,68 @@ static inline void native_apic_write(unsigned long reg, u32 v)
ASM_OUTPUT2("0" (v), "m" (*addr)));
}
static inline u32 native_apic_read(unsigned long reg)
static inline u32 native_apic_mem_read(u32 reg)
{
return *((volatile u32 *)(APIC_BASE + reg));
}
extern void apic_wait_icr_idle(void);
extern u32 safe_apic_wait_icr_idle(void);
static inline void native_apic_msr_write(u32 reg, u32 v)
{
if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
reg == APIC_LVR)
return;
wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0);
}
static inline u32 native_apic_msr_read(u32 reg)
{
u32 low, high;
if (reg == APIC_DFR)
return -1;
rdmsr(APIC_BASE_MSR + (reg >> 4), low, high);
return low;
}
#ifndef CONFIG_X86_32
extern int x2apic, x2apic_preenabled;
extern void check_x2apic(void);
extern void enable_x2apic(void);
extern void enable_IR_x2apic(void);
extern void x2apic_icr_write(u32 low, u32 id);
#endif
struct apic_ops {
u32 (*read)(u32 reg);
void (*write)(u32 reg, u32 v);
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
void (*wait_icr_idle)(void);
u32 (*safe_wait_icr_idle)(void);
};
extern struct apic_ops *apic_ops;
#define apic_read (apic_ops->read)
#define apic_write (apic_ops->write)
#define apic_icr_read (apic_ops->icr_read)
#define apic_icr_write (apic_ops->icr_write)
#define apic_wait_icr_idle (apic_ops->wait_icr_idle)
#define safe_apic_wait_icr_idle (apic_ops->safe_wait_icr_idle)
extern int get_physical_broadcast(void);
#ifdef CONFIG_X86_64
static inline void ack_x2APIC_irq(void)
{
/* Docs say use 0 for future compatibility */
native_apic_msr_write(APIC_EOI, 0);
}
#endif
static inline void ack_APIC_irq(void)
{
/*
@ -128,4 +186,4 @@ static inline void init_apic_mappings(void) { }
#endif /* !CONFIG_X86_LOCAL_APIC */
#endif /* __ASM_APIC_H */
#endif /* ASM_X86__APIC_H */

9
include/asm-x86/apicdef.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_APICDEF_H
#define _ASM_X86_APICDEF_H
#ifndef ASM_X86__APICDEF_H
#define ASM_X86__APICDEF_H
/*
* Constants for various Intel APICs. (local APIC, IOAPIC, etc.)
@ -105,6 +105,7 @@
#define APIC_TMICT 0x380
#define APIC_TMCCT 0x390
#define APIC_TDCR 0x3E0
#define APIC_SELF_IPI 0x3F0
#define APIC_TDR_DIV_TMBASE (1 << 2)
#define APIC_TDR_DIV_1 0xB
#define APIC_TDR_DIV_2 0x0
@ -128,6 +129,8 @@
#define APIC_EILVT3 0x530
#define APIC_BASE (fix_to_virt(FIX_APIC_BASE))
#define APIC_BASE_MSR 0x800
#define X2APIC_ENABLE (1UL << 10)
#ifdef CONFIG_X86_32
# define MAX_IO_APICS 64
@ -411,4 +414,4 @@ struct local_apic {
#else
#define BAD_APICID 0xFFFFu
#endif
#endif
#endif /* ASM_X86__APICDEF_H */

6
include/asm-x86/arch_hooks.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_ARCH_HOOKS_H
#define _ASM_ARCH_HOOKS_H
#ifndef ASM_X86__ARCH_HOOKS_H
#define ASM_X86__ARCH_HOOKS_H
#include <linux/interrupt.h>
@ -25,4 +25,4 @@ extern void pre_time_init_hook(void);
extern void time_init_hook(void);
extern void mca_nmi_hook(void);
#endif
#endif /* ASM_X86__ARCH_HOOKS_H */

6
include/asm-x86/asm.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_ASM_H
#define _ASM_X86_ASM_H
#ifndef ASM_X86__ASM_H
#define ASM_X86__ASM_H
#ifdef __ASSEMBLY__
# define __ASM_FORM(x) x
@ -39,4 +39,4 @@
_ASM_PTR #from "," #to "\n" \
" .previous\n"
#endif /* _ASM_X86_ASM_H */
#endif /* ASM_X86__ASM_H */

6
include/asm-x86/atomic_32.h
View File

@ -1,5 +1,5 @@
#ifndef __ARCH_I386_ATOMIC__
#define __ARCH_I386_ATOMIC__
#ifndef ASM_X86__ATOMIC_32_H
#define ASM_X86__ATOMIC_32_H
#include <linux/compiler.h>
#include <asm/processor.h>
@ -256,4 +256,4 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
#define smp_mb__after_atomic_inc() barrier()
#include <asm-generic/atomic.h>
#endif
#endif /* ASM_X86__ATOMIC_32_H */

6
include/asm-x86/atomic_64.h
View File

@ -1,5 +1,5 @@
#ifndef __ARCH_X86_64_ATOMIC__
#define __ARCH_X86_64_ATOMIC__
#ifndef ASM_X86__ATOMIC_64_H
#define ASM_X86__ATOMIC_64_H
#include <asm/alternative.h>
#include <asm/cmpxchg.h>
@ -470,4 +470,4 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
#define smp_mb__after_atomic_inc() barrier()
#include <asm-generic/atomic.h>
#endif
#endif /* ASM_X86__ATOMIC_64_H */

6
include/asm-x86/auxvec.h
View File

@ -1,5 +1,5 @@
#ifndef _ASM_X86_AUXVEC_H
#define _ASM_X86_AUXVEC_H
#ifndef ASM_X86__AUXVEC_H
#define ASM_X86__AUXVEC_H
/*
* Architecture-neutral AT_ values in 0-17, leave some room
* for more of them, start the x86-specific ones at 32.
@ -9,4 +9,4 @@
#endif
#define AT_SYSINFO_EHDR 33
#endif
#endif /* ASM_X86__AUXVEC_H */

4
include/asm-x86/mach-bigsmp/mach_apic.h → include/asm-x86/bigsmp/apic.h
View File

@ -11,7 +11,7 @@ static inline int apic_id_registered(void)
/* Round robin the irqs amoung the online cpus */
static inline cpumask_t target_cpus(void)
{
{
static unsigned long cpu = NR_CPUS;
do {
if (cpu >= NR_CPUS)
@ -23,7 +23,7 @@ static inline cpumask_t target_cpus(void)
}
#undef APIC_DEST_LOGICAL
#define APIC_DEST_LOGICAL 0
#define APIC_DEST_LOGICAL 0
#define TARGET_CPUS (target_cpus())
#define APIC_DFR_VALUE (APIC_DFR_FLAT)
#define INT_DELIVERY_MODE (dest_Fixed)

6
include/asm-x86/mach-es7000/mach_apicdef.h → include/asm-x86/bigsmp/apicdef.h
View File

@ -3,10 +3,10 @@
#define APIC_ID_MASK (0xFF<<24)
static inline unsigned get_apic_id(unsigned long x)
{
static inline unsigned get_apic_id(unsigned long x)
{
return (((x)>>24)&0xFF);
}
}
#define GET_APIC_ID(x) get_apic_id(x)

0
include/asm-x86/mach-bigsmp/mach_ipi.h → include/asm-x86/bigsmp/ipi.h
View File

6
include/asm-x86/bios_ebda.h
View File

@ -1,5 +1,5 @@
#ifndef _MACH_BIOS_EBDA_H
#define _MACH_BIOS_EBDA_H
#ifndef ASM_X86__BIOS_EBDA_H
#define ASM_X86__BIOS_EBDA_H
#include <asm/io.h>
@ -16,4 +16,4 @@ static inline unsigned int get_bios_ebda(void)
void reserve_ebda_region(void);
#endif /* _MACH_BIOS_EBDA_H */
#endif /* ASM_X86__BIOS_EBDA_H */

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