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WSL2-Linux-Kernel
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6:
  sparc: Set UTS_MACHINE correctly.
  sparc,leon: init_leon srmmu cleanup
  sparc32: Remove early interrupt enable.
  sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structure
  sparc64: Faster early-boot framebuffer console.
  Revert "sparc: Make atomic locks raw"
  sparc: remove unused nfsd #includes
  sparc: Fixup last users of irq_chip->typename
  Added sparc_leon3_snooping_enabled() and converted extern inline to static inline
  No auxio on LEON
  apbuart: Use of_find_node_by_path to find root node.
  sparc: Replace old style lock initializer
  sparc: Make atomic locks raw
  apbuart: Fix build and missing driver unregister.
  apbuart: Kill dependency on deprecated Sparc-only PROM interfaces.
  apbuart: Fix build warning.
  sparc: Support for GRLIB APBUART serial port
  watchdog: Remove BKL from rio watchdog driver
  sparc: Remove BKL from apc
  sparc,leon: Sparc-Leon SMP support
This commit is contained in:
Linus Torvalds 2009-12-08 07:48:23 -08:00
Родитель a421018e8c 7f5620a5fc
Коммит ee1262dbc6
30 изменённых файлов: 2262 добавлений и 57 удалений
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7
arch/sparc/Kconfig
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@ -221,6 +221,13 @@ config SPARC64_SMP
default y
depends on SPARC64 && SMP
config EARLYFB
bool "Support for early boot text console"
default y
depends on SPARC64
help
Say Y here to enable a faster early framebuffer boot console.
choice
prompt "Kernel page size" if SPARC64
default SPARC64_PAGE_SIZE_8KB

2
arch/sparc/Makefile
Просмотреть файл

@ -27,6 +27,7 @@ AS := $(AS) -32
LDFLAGS := -m elf32_sparc
CHECKFLAGS += -D__sparc__
export BITS := 32
UTS_MACHINE := sparc
#KBUILD_CFLAGS += -g -pipe -fcall-used-g5 -fcall-used-g7
KBUILD_CFLAGS += -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
@ -46,6 +47,7 @@ CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64
LDFLAGS := -m elf64_sparc
export BITS := 64
UTS_MACHINE := sparc64
KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \
-ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \

6
arch/sparc/include/asm/btext.h Normal file
Просмотреть файл

@ -0,0 +1,6 @@
#ifndef _SPARC_BTEXT_H
#define _SPARC_BTEXT_H
extern int btext_find_display(void);
#endif /* _SPARC_BTEXT_H */

45
arch/sparc/include/asm/leon.h
Просмотреть файл

@ -148,7 +148,7 @@ static inline unsigned long leon_load_reg(unsigned long paddr)
return retval;
}
extern inline void leon_srmmu_disabletlb(void)
static inline void leon_srmmu_disabletlb(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
@ -158,7 +158,7 @@ extern inline void leon_srmmu_disabletlb(void)
"i"(ASI_LEON_MMUREGS) : "memory");
}
extern inline void leon_srmmu_enabletlb(void)
static inline void leon_srmmu_enabletlb(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
@ -190,7 +190,7 @@ extern void leon_init_IRQ(void);
extern unsigned long last_valid_pfn;
extern inline unsigned long sparc_leon3_get_dcachecfg(void)
static inline unsigned long sparc_leon3_get_dcachecfg(void)
{
unsigned int retval;
__asm__ __volatile__("lda [%1] %2, %0\n\t" :
@ -201,7 +201,7 @@ extern inline unsigned long sparc_leon3_get_dcachecfg(void)
}
/* enable snooping */
extern inline void sparc_leon3_enable_snooping(void)
static inline void sparc_leon3_enable_snooping(void)
{
__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
"set 0x800000, %%l2\n\t"
@ -209,7 +209,14 @@ extern inline void sparc_leon3_enable_snooping(void)
"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};
extern inline void sparc_leon3_disable_cache(void)
static inline int sparc_leon3_snooping_enabled(void)
{
u32 cctrl;
__asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
return (cctrl >> 23) & 1;
};
static inline void sparc_leon3_disable_cache(void)
{
__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
"set 0x00000f, %%l2\n\t"
@ -340,6 +347,30 @@ extern int leon_flush_needed(void);
extern void leon_switch_mm(void);
extern int srmmu_swprobe_trace;
#ifdef CONFIG_SMP
extern int leon_smp_nrcpus(void);
extern void leon_clear_profile_irq(int cpu);
extern void leon_smp_done(void);
extern void leon_boot_cpus(void);
extern int leon_boot_one_cpu(int i);
void leon_init_smp(void);
extern void cpu_probe(void);
extern void cpu_idle(void);
extern void init_IRQ(void);
extern void cpu_panic(void);
extern int __leon_processor_id(void);
void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
extern unsigned int real_irq_entry[], smpleon_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
extern unsigned long trapbase_cpu1[];
extern unsigned long trapbase_cpu2[];
extern unsigned long trapbase_cpu3[];
extern unsigned int t_nmi[], linux_trap_ipi15_leon[];
extern unsigned int linux_trap_ipi15_sun4m[];
#endif /* CONFIG_SMP */
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
@ -356,6 +387,10 @@ extern int srmmu_swprobe_trace;
#define leon_switch_mm() do {} while (0)
#define leon_init_IRQ() do {} while (0)
#define init_leon() do {} while (0)
#define leon_smp_done() do {} while (0)
#define leon_boot_cpus() do {} while (0)
#define leon_boot_one_cpu(i) 1
#define leon_init_smp() do {} while (0)
#endif /* !defined(CONFIG_SPARC_LEON) */

4
arch/sparc/include/asm/rwsem.h
Просмотреть файл

@ -35,8 +35,8 @@ struct rw_semaphore {
#endif
#define __RWSEM_INITIALIZER(name) \
{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, LIST_HEAD_INIT((name).wait_list) \
__RWSEM_DEP_MAP_INIT(name) }
{ RWSEM_UNLOCKED_VALUE, __SPIN_LOCK_UNLOCKED((name).wait_lock), \
LIST_HEAD_INIT((name).wait_list) __RWSEM_DEP_MAP_INIT(name) }
#define DECLARE_RWSEM(name) \
struct rw_semaphore name = __RWSEM_INITIALIZER(name)

9
arch/sparc/include/asm/smp_32.h
Просмотреть файл

@ -106,6 +106,15 @@ static inline int hard_smp4d_processor_id(void)
return cpuid;
}
extern inline int hard_smpleon_processor_id(void)
{
int cpuid;
__asm__ __volatile__("rd %%asr17,%0\n\t"
"srl %0,28,%0" :
"=&r" (cpuid) : );
return cpuid;
}
#ifndef MODULE
static inline int hard_smp_processor_id(void)
{

3
arch/sparc/kernel/Makefile
Просмотреть файл

@ -72,7 +72,7 @@ obj-y += dma.o
obj-$(CONFIG_SPARC32_PCI) += pcic.o
obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o
obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o
obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o
obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
obj-y += auxio_$(BITS).o
@ -87,6 +87,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
CFLAGS_REMOVE_ftrace.o := -pg
obj-$(CONFIG_EARLYFB) += btext.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
# sparc64 PCI
obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o

37
arch/sparc/kernel/apc.c
Просмотреть файл

@ -10,7 +10,6 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/smp_lock.h>
#include <linux/pm.h>
#include <linux/of.h>
#include <linux/of_device.h>
@ -76,7 +75,6 @@ static inline void apc_free(struct of_device *op)
static int apc_open(struct inode *inode, struct file *f)
{
cycle_kernel_lock();
return 0;
}
@ -87,61 +85,46 @@ static int apc_release(struct inode *inode, struct file *f)
static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg)
{
__u8 inarg, __user *arg;
arg = (__u8 __user *) __arg;
lock_kernel();
__u8 inarg, __user *arg = (__u8 __user *) __arg;
switch (cmd) {
case APCIOCGFANCTL:
if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) {
unlock_kernel();
if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg))
return -EFAULT;
}
break;
case APCIOCGCPWR:
if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) {
unlock_kernel();
if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg))
return -EFAULT;
}
break;
case APCIOCGBPORT:
if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) {
unlock_kernel();
if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg))
return -EFAULT;
}
break;
case APCIOCSFANCTL:
if (get_user(inarg, arg)) {
unlock_kernel();
if (get_user(inarg, arg))
return -EFAULT;
}
apc_writeb(inarg & APC_REGMASK, APC_FANCTL_REG);
break;
case APCIOCSCPWR:
if (get_user(inarg, arg)) {
unlock_kernel();
if (get_user(inarg, arg))
return -EFAULT;
}
apc_writeb(inarg & APC_REGMASK, APC_CPOWER_REG);
break;
case APCIOCSBPORT:
if (get_user(inarg, arg)) {
unlock_kernel();
if (get_user(inarg, arg))
return -EFAULT;
}
apc_writeb(inarg & APC_BPMASK, APC_BPORT_REG);
break;
default:
unlock_kernel();
return -EINVAL;
};
unlock_kernel();
return 0;
}

1
arch/sparc/kernel/auxio_32.c
Просмотреть файл

@ -28,6 +28,7 @@ void __init auxio_probe(void)
struct resource r;
switch (sparc_cpu_model) {
case sparc_leon:
case sun4d:
case sun4:
return;

673
arch/sparc/kernel/btext.c Normal file
Просмотреть файл

@ -0,0 +1,673 @@
/*
* Procedures for drawing on the screen early on in the boot process.
*
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/console.h>
#include <asm/btext.h>
#include <asm/oplib.h>
#include <asm/io.h>
#define NO_SCROLL
#ifndef NO_SCROLL
static void scrollscreen(void);
#endif
static void draw_byte(unsigned char c, long locX, long locY);
static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
#define __force_data __attribute__((__section__(".data")))
static int g_loc_X __force_data;
static int g_loc_Y __force_data;
static int g_max_loc_X __force_data;
static int g_max_loc_Y __force_data;
static int dispDeviceRowBytes __force_data;
static int dispDeviceDepth __force_data;
static int dispDeviceRect[4] __force_data;
static unsigned char *dispDeviceBase __force_data;
#define cmapsz (16*256)
static unsigned char vga_font[cmapsz];
static int __init btext_initialize(unsigned int node)
{
unsigned int width, height, depth, pitch;
unsigned long address = 0;
u32 prop;
if (prom_getproperty(node, "width", (char *)&width, 4) < 0)
return -EINVAL;
if (prom_getproperty(node, "height", (char *)&height, 4) < 0)
return -EINVAL;
if (prom_getproperty(node, "depth", (char *)&depth, 4) < 0)
return -EINVAL;
pitch = width * ((depth + 7) / 8);
if (prom_getproperty(node, "linebytes", (char *)&prop, 4) >= 0 &&
prop != 0xffffffffu)
pitch = prop;
if (pitch == 1)
pitch = 0x1000;
if (prom_getproperty(node, "address", (char *)&prop, 4) >= 0)
address = prop;
/* FIXME: Add support for PCI reg properties. Right now, only
* reliable on macs
*/
if (address == 0)
return -EINVAL;
g_loc_X = 0;
g_loc_Y = 0;
g_max_loc_X = width / 8;
g_max_loc_Y = height / 16;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth == 15 ? 16 : depth;
dispDeviceRect[0] = dispDeviceRect[1] = 0;
dispDeviceRect[2] = width;
dispDeviceRect[3] = height;
return 0;
}
/* Calc the base address of a given point (x,y) */
static unsigned char * calc_base(int x, int y)
{
unsigned char *base = dispDeviceBase;
base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);
base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;
return base;
}
static void btext_clearscreen(void)
{
unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
unsigned int *ptr = base;
for(j=width; j; --j)
*(ptr++) = 0;
base += (dispDeviceRowBytes >> 2);
}
}
#ifndef NO_SCROLL
static void scrollscreen(void)
{
unsigned int *src = (unsigned int *)calc_base(0,16);
unsigned int *dst = (unsigned int *)calc_base(0,0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
(dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
{
unsigned int *src_ptr = src;
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = *(src_ptr++);
src += (dispDeviceRowBytes >> 2);
dst += (dispDeviceRowBytes >> 2);
}
for (i=0; i<16; i++)
{
unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = 0;
dst += (dispDeviceRowBytes >> 2);
}
}
#endif /* ndef NO_SCROLL */
void btext_drawchar(char c)
{
int cline = 0;
#ifdef NO_SCROLL
int x;
#endif
switch (c) {
case '\b':
if (g_loc_X > 0)
--g_loc_X;
break;
case '\t':
g_loc_X = (g_loc_X & -8) + 8;
break;
case '\r':
g_loc_X = 0;
break;
case '\n':
g_loc_X = 0;
g_loc_Y++;
cline = 1;
break;
default:
draw_byte(c, g_loc_X++, g_loc_Y);
}
if (g_loc_X >= g_max_loc_X) {
g_loc_X = 0;
g_loc_Y++;
cline = 1;
}
#ifndef NO_SCROLL
while (g_loc_Y >= g_max_loc_Y) {
scrollscreen();
g_loc_Y--;
}
#else
/* wrap around from bottom to top of screen so we don't
waste time scrolling each line. -- paulus. */
if (g_loc_Y >= g_max_loc_Y)
g_loc_Y = 0;
if (cline) {
for (x = 0; x < g_max_loc_X; ++x)
draw_byte(' ', x, g_loc_Y);
}
#endif
}
static void btext_drawtext(const char *c, unsigned int len)
{
while (len--)
btext_drawchar(*c++);
}
static void draw_byte(unsigned char c, long locX, long locY)
{
unsigned char *base = calc_base(locX << 3, locY << 4);
unsigned char *font = &vga_font[((unsigned int)c) * 16];
int rb = dispDeviceRowBytes;
switch(dispDeviceDepth) {
case 24:
case 32:
draw_byte_32(font, (unsigned int *)base, rb);
break;
case 15:
case 16:
draw_byte_16(font, (unsigned int *)base, rb);
break;
case 8:
draw_byte_8(font, (unsigned int *)base, rb);
break;
}
}
static unsigned int expand_bits_8[16] = {
0x00000000,
0x000000ff,
0x0000ff00,
0x0000ffff,
0x00ff0000,
0x00ff00ff,
0x00ffff00,
0x00ffffff,
0xff000000,
0xff0000ff,
0xff00ff00,
0xff00ffff,
0xffff0000,
0xffff00ff,
0xffffff00,
0xffffffff
};
static unsigned int expand_bits_16[4] = {
0x00000000,
0x0000ffff,
0xffff0000,
0xffffffff
};
static void draw_byte_32(unsigned char *font, unsigned int *base, int rb)
{
int l, bits;
int fg = 0xFFFFFFFFUL;
int bg = 0x00000000UL;
for (l = 0; l < 16; ++l)
{
bits = *font++;
base[0] = (-(bits >> 7) & fg) ^ bg;
base[1] = (-((bits >> 6) & 1) & fg) ^ bg;
base[2] = (-((bits >> 5) & 1) & fg) ^ bg;
base[3] = (-((bits >> 4) & 1) & fg) ^ bg;
base[4] = (-((bits >> 3) & 1) & fg) ^ bg;
base[5] = (-((bits >> 2) & 1) & fg) ^ bg;
base[6] = (-((bits >> 1) & 1) & fg) ^ bg;
base[7] = (-(bits & 1) & fg) ^ bg;
base = (unsigned int *) ((char *)base + rb);
}
}
static void draw_byte_16(unsigned char *font, unsigned int *base, int rb)
{
int l, bits;
int fg = 0xFFFFFFFFUL;
int bg = 0x00000000UL;
unsigned int *eb = (int *)expand_bits_16;
for (l = 0; l < 16; ++l)
{
bits = *font++;
base[0] = (eb[bits >> 6] & fg) ^ bg;
base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;
base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;
base[3] = (eb[bits & 3] & fg) ^ bg;
base = (unsigned int *) ((char *)base + rb);
}
}
static void draw_byte_8(unsigned char *font, unsigned int *base, int rb)
{
int l, bits;
int fg = 0x0F0F0F0FUL;
int bg = 0x00000000UL;
unsigned int *eb = (int *)expand_bits_8;
for (l = 0; l < 16; ++l)
{
bits = *font++;
base[0] = (eb[bits >> 4] & fg) ^ bg;
base[1] = (eb[bits & 0xf] & fg) ^ bg;
base = (unsigned int *) ((char *)base + rb);
}
}
static void btext_console_write(struct console *con, const char *s,
unsigned int n)
{
btext_drawtext(s, n);
}
static struct console btext_console = {
.name = "btext",
.write = btext_console_write,
.flags = CON_PRINTBUFFER | CON_ENABLED | CON_BOOT | CON_ANYTIME,
.index = 0,
};
int __init btext_find_display(void)
{
unsigned int node;
char type[32];
int ret;
node = prom_inst2pkg(prom_stdout);
if (prom_getproperty(node, "device_type", type, 32) < 0)
return -ENODEV;
if (strcmp(type, "display"))
return -ENODEV;
ret = btext_initialize(node);
if (!ret) {
btext_clearscreen();
register_console(&btext_console);
}
return ret;
}
static unsigned char vga_font[cmapsz] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd,
0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff,
0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe,
0x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18,
0x3c, 0x3c, 0xe7, 0xe7, 0xe7, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x18, 0x18, 0x3c,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c,
0x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xe7, 0xc3, 0xc3, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x66, 0x42, 0x42, 0x66, 0x3c, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0x99, 0xbd,
0xbd, 0x99, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x1e, 0x0e,
0x1a, 0x32, 0x78, 0xcc, 0xcc, 0xcc, 0xcc, 0x78, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x3c, 0x66, 0x66, 0x66, 0x66, 0x3c, 0x18, 0x7e, 0x18, 0x18,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x33, 0x3f, 0x30, 0x30, 0x30,
0x30, 0x70, 0xf0, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x63,
0x7f, 0x63, 0x63, 0x63, 0x63, 0x67, 0xe7, 0xe6, 0xc0, 0x00, 0x00, 0x00,
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0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x00, 0x00, 0x00, 0x00,
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0x18, 0x18, 0x18, 0x18, 0xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00,
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0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x0c, 0x0c,
0x0c, 0x0c, 0x0c, 0xec, 0x6c, 0x6c, 0x3c, 0x1c, 0x00, 0x00, 0x00, 0x00,
0x00, 0xd8, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0xd8, 0x30, 0x60, 0xc8, 0xf8, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
};

11
arch/sparc/kernel/cpu.c
Просмотреть файл

@ -184,6 +184,17 @@ static const struct manufacturer_info __initconst manufacturer_info[] = {
FPU(3, "Fujitsu or Weitek on-chip FPU"),
FPU(-1, NULL)
}
},{
0xF, /* Aeroflex Gaisler */
.cpu_info = {
CPU(3, "LEON"),
CPU(-1, NULL)
},
.fpu_info = {
FPU(2, "GRFPU"),
FPU(3, "GRFPU-Lite"),
FPU(-1, NULL)
}
},{
0x17,
.cpu_info = {

33
arch/sparc/kernel/entry.S
Просмотреть файл

@ -400,6 +400,39 @@ linux_trap_ipi15_sun4d:
/* FIXME */
1: b,a 1b
#ifdef CONFIG_SPARC_LEON
.globl smpleon_ticker
/* SMP per-cpu ticker interrupts are handled specially. */
smpleon_ticker:
SAVE_ALL
or %l0, PSR_PIL, %g2
wr %g2, 0x0, %psr
WRITE_PAUSE
wr %g2, PSR_ET, %psr
WRITE_PAUSE
call leon_percpu_timer_interrupt
add %sp, STACKFRAME_SZ, %o0
wr %l0, PSR_ET, %psr
WRITE_PAUSE
RESTORE_ALL
.align 4
.globl linux_trap_ipi15_leon
linux_trap_ipi15_leon:
SAVE_ALL
or %l0, PSR_PIL, %l4
wr %l4, 0x0, %psr
WRITE_PAUSE
wr %l4, PSR_ET, %psr
WRITE_PAUSE
call leon_cross_call_irq
nop
b ret_trap_lockless_ipi
clr %l6
#endif /* CONFIG_SPARC_LEON */
#endif /* CONFIG_SMP */
/* This routine handles illegal instructions and privileged

22
arch/sparc/kernel/head_32.S
Просмотреть файл

@ -811,8 +811,30 @@ found_version:
got_prop:
#ifdef CONFIG_SPARC_LEON
/* no cpu-type check is needed, it is a SPARC-LEON */
#ifdef CONFIG_SMP
ba leon_smp_init
nop
.global leon_smp_init
leon_smp_init:
sethi %hi(boot_cpu_id), %g1 ! master always 0
stb %g0, [%g1 + %lo(boot_cpu_id)]
sethi %hi(boot_cpu_id4), %g1 ! master always 0
stb %g0, [%g1 + %lo(boot_cpu_id4)]
rd %asr17,%g1
srl %g1,28,%g1
cmp %g0,%g1
beq sun4c_continue_boot !continue with master
nop
ba leon_smp_cpu_startup
nop
#else
ba sun4c_continue_boot
nop
#endif
#endif
set cputypval, %o2
ldub [%o2 + 0x4], %l1

5
arch/sparc/kernel/ioport.c
Просмотреть файл

@ -48,8 +48,13 @@
#include <asm/dma.h>
#include <asm/iommu.h>
#include <asm/io-unit.h>
#include <asm/leon.h>
#ifdef CONFIG_SPARC_LEON
#define mmu_inval_dma_area(p, l) leon_flush_dcache_all()
#else
#define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */
#endif
static struct resource *_sparc_find_resource(struct resource *r,
unsigned long);

8
arch/sparc/kernel/irq_64.c
Просмотреть файл

@ -187,7 +187,7 @@ int show_interrupts(struct seq_file *p, void *v)
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
#endif
seq_printf(p, " %9s", irq_desc[i].chip->typename);
seq_printf(p, " %9s", irq_desc[i].chip->name);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
@ -484,7 +484,7 @@ static void sun4v_virq_eoi(unsigned int virt_irq)
}
static struct irq_chip sun4u_irq = {
.typename = "sun4u",
.name = "sun4u",
.enable = sun4u_irq_enable,
.disable = sun4u_irq_disable,
.eoi = sun4u_irq_eoi,
@ -492,7 +492,7 @@ static struct irq_chip sun4u_irq = {
};
static struct irq_chip sun4v_irq = {
.typename = "sun4v",
.name = "sun4v",
.enable = sun4v_irq_enable,
.disable = sun4v_irq_disable,
.eoi = sun4v_irq_eoi,
@ -500,7 +500,7 @@ static struct irq_chip sun4v_irq = {
};
static struct irq_chip sun4v_virq = {
.typename = "vsun4v",
.name = "vsun4v",
.enable = sun4v_virq_enable,
.disable = sun4v_virq_disable,
.eoi = sun4v_virq_eoi,

84
arch/sparc/kernel/leon_kernel.c
Просмотреть файл

@ -12,11 +12,14 @@
#include <linux/of_platform.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>
#include <asm/oplib.h>
#include <asm/timer.h>
#include <asm/prom.h>
#include <asm/leon.h>
#include <asm/leon_amba.h>
#include <asm/traps.h>
#include <asm/cacheflush.h>
#include "prom.h"
#include "irq.h"
@ -115,6 +118,21 @@ void __init leon_init_timers(irq_handler_t counter_fn)
(((1000000 / 100) - 1)));
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
#ifdef CONFIG_SMP
leon_percpu_timer_dev[0].start = (int)leon3_gptimer_regs;
leon_percpu_timer_dev[0].irq = leon3_gptimer_irq+1;
if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) &
(1<<LEON3_GPTIMER_SEPIRQ))) {
prom_printf("irq timer not configured with seperate irqs \n");
BUG();
}
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].val, 0);
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/100) - 1)));
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0);
# endif
} else {
printk(KERN_ERR "No Timer/irqctrl found\n");
BUG();
@ -130,11 +148,41 @@ void __init leon_init_timers(irq_handler_t counter_fn)
prom_halt();
}
# ifdef CONFIG_SMP
{
unsigned long flags;
struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_percpu_timer_dev[0].irq - 1)];
/* For SMP we use the level 14 ticker, however the bootup code
* has copied the firmwares level 14 vector into boot cpu's
* trap table, we must fix this now or we get squashed.
*/
local_irq_save(flags);
patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */
/* Adjust so that we jump directly to smpleon_ticker */
trap_table->inst_three += smpleon_ticker - real_irq_entry;
local_flush_cache_all();
local_irq_restore(flags);
}
# endif
if (leon3_gptimer_regs) {
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl,
LEON3_GPTIMER_EN |
LEON3_GPTIMER_RL |
LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
#ifdef CONFIG_SMP
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl,
LEON3_GPTIMER_EN |
LEON3_GPTIMER_RL |
LEON3_GPTIMER_LD |
LEON3_GPTIMER_IRQEN);
#endif
}
}
@ -175,6 +223,42 @@ void __init leon_node_init(struct device_node *dp, struct device_node ***nextp)
}
}
#ifdef CONFIG_SMP
void leon_set_cpu_int(int cpu, int level)
{
unsigned long mask;
mask = get_irqmask(level);
LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask);
}
static void leon_clear_ipi(int cpu, int level)
{
unsigned long mask;
mask = get_irqmask(level);
LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask<<16);
}
static void leon_set_udt(int cpu)
{
}
void leon_clear_profile_irq(int cpu)
{
}
void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu)
{
unsigned long mask, flags, *addr;
mask = get_irqmask(irq_nr);
local_irq_save(flags);
addr = (unsigned long *)&(leon3_irqctrl_regs->mask[cpu]);
LEON3_BYPASS_STORE_PA(addr, (LEON3_BYPASS_LOAD_PA(addr) | (mask)));
local_irq_restore(flags);
}
#endif
void __init leon_init_IRQ(void)
{
sparc_init_timers = leon_init_timers;

468
arch/sparc/kernel/leon_smp.c Normal file
Просмотреть файл

@ -0,0 +1,468 @@
/* leon_smp.c: Sparc-Leon SMP support.
*
* based on sun4m_smp.c
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
*/
#include <asm/head.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/threads.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/profile.h>
#include <linux/pm.h>
#include <linux/delay.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/ptrace.h>
#include <asm/atomic.h>
#include <asm/irq_regs.h>
#include <asm/delay.h>
#include <asm/irq.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
#include <asm/oplib.h>
#include <asm/cpudata.h>
#include <asm/asi.h>
#include <asm/leon.h>
#include <asm/leon_amba.h>
#ifdef CONFIG_SPARC_LEON
#include "irq.h"
extern ctxd_t *srmmu_ctx_table_phys;
static int smp_processors_ready;
extern volatile unsigned long cpu_callin_map[NR_CPUS];
extern unsigned char boot_cpu_id;
extern cpumask_t smp_commenced_mask;
void __init leon_configure_cache_smp(void);
static inline unsigned long do_swap(volatile unsigned long *ptr,
unsigned long val)
{
__asm__ __volatile__("swapa [%1] %2, %0\n\t" : "=&r"(val)
: "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
: "memory");
return val;
}
static void smp_setup_percpu_timer(void);
void __cpuinit leon_callin(void)
{
int cpuid = hard_smpleon_processor_id();
local_flush_cache_all();
local_flush_tlb_all();
leon_configure_cache_smp();
/* Get our local ticker going. */
smp_setup_percpu_timer();
calibrate_delay();
smp_store_cpu_info(cpuid);
local_flush_cache_all();
local_flush_tlb_all();
/*
* Unblock the master CPU _only_ when the scheduler state
* of all secondary CPUs will be up-to-date, so after
* the SMP initialization the master will be just allowed
* to call the scheduler code.
* Allow master to continue.
*/
do_swap(&cpu_callin_map[cpuid], 1);
local_flush_cache_all();
local_flush_tlb_all();
cpu_probe();
/* Fix idle thread fields. */
__asm__ __volatile__("ld [%0], %%g6\n\t" : : "r"(&current_set[cpuid])
: "memory" /* paranoid */);
/* Attach to the address space of init_task. */
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
while (!cpu_isset(cpuid, smp_commenced_mask))
mb();
local_irq_enable();
cpu_set(cpuid, cpu_online_map);
}
/*
* Cycle through the processors asking the PROM to start each one.
*/
extern struct linux_prom_registers smp_penguin_ctable;
void __init leon_configure_cache_smp(void)
{
unsigned long cfg = sparc_leon3_get_dcachecfg();
int me = smp_processor_id();
if (ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg) > 4) {
printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disabling caches\n",
(unsigned int)ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg),
(unsigned int)cfg, (unsigned int)me);
sparc_leon3_disable_cache();
} else {
if (cfg & ASI_LEON3_SYSCTRL_CFG_SNOOPING) {
sparc_leon3_enable_snooping();
} else {
printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n",
me);
sparc_leon3_disable_cache();
}
}
local_flush_cache_all();
local_flush_tlb_all();
}
void leon_smp_setbroadcast(unsigned int mask)
{
int broadcast =
((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >>
LEON3_IRQMPSTATUS_BROADCAST) & 1);
if (!broadcast) {
prom_printf("######## !!!! The irqmp-ctrl must have broadcast enabled, smp wont work !!!!! ####### nr cpus: %d\n",
leon_smp_nrcpus());
if (leon_smp_nrcpus() > 1) {
BUG();
} else {
prom_printf("continue anyway\n");
return;
}
}
LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpbroadcast), mask);
}
unsigned int leon_smp_getbroadcast(void)
{
unsigned int mask;
mask = LEON_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpbroadcast));
return mask;
}
int leon_smp_nrcpus(void)
{
int nrcpu =
((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >>
LEON3_IRQMPSTATUS_CPUNR) & 0xf) + 1;
return nrcpu;
}
void __init leon_boot_cpus(void)
{
int nrcpu = leon_smp_nrcpus();
int me = smp_processor_id();
printk(KERN_INFO "%d:(%d:%d) cpus mpirq at 0x%x \n", (unsigned int)me,
(unsigned int)nrcpu, (unsigned int)NR_CPUS,
(unsigned int)&(leon3_irqctrl_regs->mpstatus));
leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, me);
leon_enable_irq_cpu(LEON3_IRQ_TICKER, me);
leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, me);
leon_smp_setbroadcast(1 << LEON3_IRQ_TICKER);
leon_configure_cache_smp();
smp_setup_percpu_timer();
local_flush_cache_all();
}
int __cpuinit leon_boot_one_cpu(int i)
{
struct task_struct *p;
int timeout;
/* Cook up an idler for this guy. */
p = fork_idle(i);
current_set[i] = task_thread_info(p);
/* See trampoline.S:leon_smp_cpu_startup for details...
* Initialize the contexts table
* Since the call to prom_startcpu() trashes the structure,
* we need to re-initialize it for each cpu
*/
smp_penguin_ctable.which_io = 0;
smp_penguin_ctable.phys_addr = (unsigned int)srmmu_ctx_table_phys;
smp_penguin_ctable.reg_size = 0;
/* whirrr, whirrr, whirrrrrrrrr... */
printk(KERN_INFO "Starting CPU %d : (irqmp: 0x%x)\n", (unsigned int)i,
(unsigned int)&leon3_irqctrl_regs->mpstatus);
local_flush_cache_all();
LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpstatus), 1 << i);
/* wheee... it's going... */
for (timeout = 0; timeout < 10000; timeout++) {
if (cpu_callin_map[i])
break;
udelay(200);
}
printk(KERN_INFO "Started CPU %d \n", (unsigned int)i);
if (!(cpu_callin_map[i])) {
printk(KERN_ERR "Processor %d is stuck.\n", i);
return -ENODEV;
} else {
leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, i);
leon_enable_irq_cpu(LEON3_IRQ_TICKER, i);
leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, i);
}
local_flush_cache_all();
return 0;
}
void __init leon_smp_done(void)
{
int i, first;
int *prev;
/* setup cpu list for irq rotation */
first = 0;
prev = &first;
for (i = 0; i < NR_CPUS; i++) {
if (cpu_online(i)) {
*prev = i;
prev = &cpu_data(i).next;
}
}
*prev = first;
local_flush_cache_all();
/* Free unneeded trap tables */
if (!cpu_isset(1, cpu_present_map)) {
ClearPageReserved(virt_to_page(trapbase_cpu1));
init_page_count(virt_to_page(trapbase_cpu1));
free_page((unsigned long)trapbase_cpu1);
totalram_pages++;
num_physpages++;
}
if (!cpu_isset(2, cpu_present_map)) {
ClearPageReserved(virt_to_page(trapbase_cpu2));
init_page_count(virt_to_page(trapbase_cpu2));
free_page((unsigned long)trapbase_cpu2);
totalram_pages++;
num_physpages++;
}
if (!cpu_isset(3, cpu_present_map)) {
ClearPageReserved(virt_to_page(trapbase_cpu3));
init_page_count(virt_to_page(trapbase_cpu3));
free_page((unsigned long)trapbase_cpu3);
totalram_pages++;
num_physpages++;
}
/* Ok, they are spinning and ready to go. */
smp_processors_ready = 1;
}
void leon_irq_rotate(int cpu)
{
}
static struct smp_funcall {
smpfunc_t func;
unsigned long arg1;
unsigned long arg2;
unsigned long arg3;
unsigned long arg4;
unsigned long arg5;
unsigned long processors_in[NR_CPUS]; /* Set when ipi entered. */
unsigned long processors_out[NR_CPUS]; /* Set when ipi exited. */
} ccall_info;
static DEFINE_SPINLOCK(cross_call_lock);
/* Cross calls must be serialized, at least currently. */
static void leon_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4)
{
if (smp_processors_ready) {
register int high = NR_CPUS - 1;
unsigned long flags;
spin_lock_irqsave(&cross_call_lock, flags);
{
/* If you make changes here, make sure gcc generates proper code... */
register smpfunc_t f asm("i0") = func;
register unsigned long a1 asm("i1") = arg1;
register unsigned long a2 asm("i2") = arg2;
register unsigned long a3 asm("i3") = arg3;
register unsigned long a4 asm("i4") = arg4;
register unsigned long a5 asm("i5") = 0;
__asm__ __volatile__("std %0, [%6]\n\t"
"std %2, [%6 + 8]\n\t"
"std %4, [%6 + 16]\n\t" : :
"r"(f), "r"(a1), "r"(a2), "r"(a3),
"r"(a4), "r"(a5),
"r"(&ccall_info.func));
}
/* Init receive/complete mapping, plus fire the IPI's off. */
{
register int i;
cpu_clear(smp_processor_id(), mask);
cpus_and(mask, cpu_online_map, mask);
for (i = 0; i <= high; i++) {
if (cpu_isset(i, mask)) {
ccall_info.processors_in[i] = 0;
ccall_info.processors_out[i] = 0;
set_cpu_int(i, LEON3_IRQ_CROSS_CALL);
}
}
}
{
register int i;
i = 0;
do {
if (!cpu_isset(i, mask))
continue;
while (!ccall_info.processors_in[i])
barrier();
} while (++i <= high);
i = 0;
do {
if (!cpu_isset(i, mask))
continue;
while (!ccall_info.processors_out[i])
barrier();
} while (++i <= high);
}
spin_unlock_irqrestore(&cross_call_lock, flags);
}
}
/* Running cross calls. */
void leon_cross_call_irq(void)
{
int i = smp_processor_id();
ccall_info.processors_in[i] = 1;
ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3,
ccall_info.arg4, ccall_info.arg5);
ccall_info.processors_out[i] = 1;
}
void leon_percpu_timer_interrupt(struct pt_regs *regs)
{
struct pt_regs *old_regs;
int cpu = smp_processor_id();
old_regs = set_irq_regs(regs);
leon_clear_profile_irq(cpu);
profile_tick(CPU_PROFILING);
if (!--prof_counter(cpu)) {
int user = user_mode(regs);
irq_enter();
update_process_times(user);
irq_exit();
prof_counter(cpu) = prof_multiplier(cpu);
}
set_irq_regs(old_regs);
}
static void __init smp_setup_percpu_timer(void)
{
int cpu = smp_processor_id();
prof_counter(cpu) = prof_multiplier(cpu) = 1;
}
void __init leon_blackbox_id(unsigned *addr)
{
int rd = *addr & 0x3e000000;
int rs1 = rd >> 11;
/* patch places where ___b_hard_smp_processor_id appears */
addr[0] = 0x81444000 | rd; /* rd %asr17, reg */
addr[1] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */
addr[2] = 0x01000000; /* nop */
}
void __init leon_blackbox_current(unsigned *addr)
{
int rd = *addr & 0x3e000000;
int rs1 = rd >> 11;
/* patch LOAD_CURRENT macro where ___b_load_current appears */
addr[0] = 0x81444000 | rd; /* rd %asr17, reg */
addr[2] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */
addr[4] = 0x81282002 | rd | rs1; /* sll reg, 0x2, reg */
}
/*
* CPU idle callback function
* See .../arch/sparc/kernel/process.c
*/
void pmc_leon_idle(void)
{
__asm__ volatile ("mov %g0, %asr19");
}
void __init leon_init_smp(void)
{
/* Patch ipi15 trap table */
t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_leon - linux_trap_ipi15_sun4m);
BTFIXUPSET_BLACKBOX(hard_smp_processor_id, leon_blackbox_id);
BTFIXUPSET_BLACKBOX(load_current, leon_blackbox_current);
BTFIXUPSET_CALL(smp_cross_call, leon_cross_call, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(__hard_smp_processor_id, __leon_processor_id,
BTFIXUPCALL_NORM);
#ifndef PMC_NO_IDLE
/* Assign power management IDLE handler */
pm_idle = pmc_leon_idle;
printk(KERN_INFO "leon: power management initialized\n");
#endif
}
#endif /* CONFIG_SPARC_LEON */

2
arch/sparc/kernel/pci_msi.c
Просмотреть файл

@ -112,7 +112,7 @@ static void free_msi(struct pci_pbm_info *pbm, int msi_num)
}
static struct irq_chip msi_irq = {
.typename = "PCI-MSI",
.name = "PCI-MSI",
.mask = mask_msi_irq,
.unmask = unmask_msi_irq,
.enable = unmask_msi_irq,

6
arch/sparc/kernel/setup_64.c
Просмотреть файл

@ -46,6 +46,7 @@
#include <asm/setup.h>
#include <asm/mmu.h>
#include <asm/ns87303.h>
#include <asm/btext.h>
#ifdef CONFIG_IP_PNP
#include <net/ipconfig.h>
@ -286,7 +287,10 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
boot_flags_init(*cmdline_p);
register_console(&prom_early_console);
#ifdef CONFIG_EARLYFB
if (btext_find_display())
#endif
register_console(&prom_early_console);
if (tlb_type == hypervisor)
printk("ARCH: SUN4V\n");

10
arch/sparc/kernel/smp_32.c
Просмотреть файл

@ -32,6 +32,7 @@
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/cpudata.h>
#include <asm/leon.h>
#include "irq.h"
@ -96,6 +97,9 @@ void __init smp_cpus_done(unsigned int max_cpus)
case sun4d:
smp4d_smp_done();
break;
case sparc_leon:
leon_smp_done();
break;
case sun4e:
printk("SUN4E\n");
BUG();
@ -306,6 +310,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
case sun4d:
smp4d_boot_cpus();
break;
case sparc_leon:
leon_boot_cpus();
break;
case sun4e:
printk("SUN4E\n");
BUG();
@ -376,6 +383,9 @@ int __cpuinit __cpu_up(unsigned int cpu)
case sun4d:
ret = smp4d_boot_one_cpu(cpu);
break;
case sparc_leon:
ret = leon_boot_one_cpu(cpu);
break;
case sun4e:
printk("SUN4E\n");
BUG();

5
arch/sparc/kernel/sys_sparc32.c
Просмотреть файл

@ -26,11 +26,6 @@
#include <linux/nfs_fs.h>
#include <linux/quota.h>
#include <linux/module.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/cache.h>
#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
#include <linux/poll.h>
#include <linux/personality.h>
#include <linux/stat.h>

3
arch/sparc/kernel/time_32.c
Просмотреть файл

@ -210,9 +210,6 @@ static void __init sbus_time_init(void)
btfixup();
sparc_init_timers(timer_interrupt);
/* Now that OBP ticker has been silenced, it is safe to enable IRQ. */
local_irq_enable();
}
void __init time_init(void)

69
arch/sparc/kernel/trampoline_32.S
Просмотреть файл

@ -15,7 +15,7 @@
#include <asm/contregs.h>
#include <asm/thread_info.h>
.globl sun4m_cpu_startup, __smp4m_processor_id
.globl sun4m_cpu_startup, __smp4m_processor_id, __leon_processor_id
.globl sun4d_cpu_startup, __smp4d_processor_id
__CPUINIT
@ -106,6 +106,12 @@ __smp4d_processor_id:
retl
mov %g1, %o7
__leon_processor_id:
rd %asr17,%g2
srl %g2,28,%g2
retl
mov %g1, %o7
/* CPUID in bootbus can be found at PA 0xff0140000 */
#define SUN4D_BOOTBUS_CPUID 0xf0140000
@ -160,3 +166,64 @@ sun4d_cpu_startup:
nop
b,a smp_do_cpu_idle
#ifdef CONFIG_SPARC_LEON
__CPUINIT
.align 4
.global leon_smp_cpu_startup, smp_penguin_ctable
leon_smp_cpu_startup:
set smp_penguin_ctable,%g1
ld [%g1+4],%g1
srl %g1,4,%g1
set 0x00000100,%g5 /* SRMMU_CTXTBL_PTR */
sta %g1, [%g5] ASI_M_MMUREGS
/* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */
set (PSR_PIL | PSR_S | PSR_PS), %g1
wr %g1, 0x0, %psr ! traps off though
WRITE_PAUSE
/* Our %wim is one behind CWP */
mov 2, %g1
wr %g1, 0x0, %wim
WRITE_PAUSE
/* Set tbr - we use just one trap table. */
set trapbase, %g1
wr %g1, 0x0, %tbr
WRITE_PAUSE
/* Get our CPU id */
rd %asr17,%g3
/* Give ourselves a stack and curptr. */
set current_set, %g5
srl %g3, 28, %g4
sll %g4, 2, %g4
ld [%g5 + %g4], %g6
sethi %hi(THREAD_SIZE - STACKFRAME_SZ), %sp
or %sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp
add %g6, %sp, %sp
/* Turn on traps (PSR_ET). */
rd %psr, %g1
wr %g1, PSR_ET, %psr ! traps on
WRITE_PAUSE
/* Init our caches, etc. */
set poke_srmmu, %g5
ld [%g5], %g5
call %g5
nop
/* Start this processor. */
call leon_callin
nop
b,a smp_do_cpu_idle
#endif

9
arch/sparc/mm/srmmu.c
Просмотреть файл

@ -1990,7 +1990,7 @@ void __init poke_leonsparc(void)
void __init init_leon(void)
{
srmmu_name = "Leon";
srmmu_name = "LEON";
BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all,
BTFIXUPCALL_NORM);
@ -2037,8 +2037,6 @@ static void __init get_srmmu_type(void)
/* First, check for sparc-leon. */
if (sparc_cpu_model == sparc_leon) {
psr_typ = 0xf; /* hardcoded ids for older models/simulators */
psr_vers = 2;
init_leon();
return;
}
@ -2301,7 +2299,8 @@ void __init ld_mmu_srmmu(void)
BTFIXUPSET_CALL(flush_cache_mm, smp_flush_cache_mm, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(flush_cache_range, smp_flush_cache_range, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(flush_cache_page, smp_flush_cache_page, BTFIXUPCALL_NORM);
if (sparc_cpu_model != sun4d) {
if (sparc_cpu_model != sun4d &&
sparc_cpu_model != sparc_leon) {
BTFIXUPSET_CALL(flush_tlb_all, smp_flush_tlb_all, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(flush_tlb_mm, smp_flush_tlb_mm, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(flush_tlb_range, smp_flush_tlb_range, BTFIXUPCALL_NORM);
@ -2330,6 +2329,8 @@ void __init ld_mmu_srmmu(void)
#ifdef CONFIG_SMP
if (sparc_cpu_model == sun4d)
sun4d_init_smp();
else if (sparc_cpu_model == sparc_leon)
leon_init_smp();
else
sun4m_init_smp();
#endif

13
drivers/serial/Kconfig
Просмотреть файл

@ -1477,4 +1477,17 @@ config SERIAL_BCM63XX_CONSOLE
If you have enabled the serial port on the bcm63xx CPU
you can make it the console by answering Y to this option.
config SERIAL_GRLIB_GAISLER_APBUART
tristate "GRLIB APBUART serial support"
depends on OF
---help---
Add support for the GRLIB APBUART serial port.
config SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
bool "Console on GRLIB APBUART serial port"
depends on SERIAL_GRLIB_GAISLER_APBUART=y
select SERIAL_CORE_CONSOLE
help
Support for running a console on the GRLIB APBUART
endmenu

1
drivers/serial/Makefile
Просмотреть файл

@ -81,3 +81,4 @@ obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o
obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o

710
drivers/serial/apbuart.c Normal file
Просмотреть файл

@ -0,0 +1,710 @@
/*
* Driver for GRLIB serial ports (APBUART)
*
* Based on linux/drivers/serial/amba.c
*
* Copyright (C) 2000 Deep Blue Solutions Ltd.
* Copyright (C) 2003 Konrad Eisele <eiselekd@web.de>
* Copyright (C) 2006 Daniel Hellstrom <daniel@gaisler.com>, Aeroflex Gaisler AB
* Copyright (C) 2008 Gilead Kutnick <kutnickg@zin-tech.com>
* Copyright (C) 2009 Kristoffer Glembo <kristoffer@gaisler.com>, Aeroflex Gaisler AB
*/
#if defined(CONFIG_SERIAL_GRLIB_GAISLER_APBUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/serial.h>
#include <linux/console.h>
#include <linux/sysrq.h>
#include <linux/kthread.h>
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/serial_core.h>
#include <asm/irq.h>
#include "apbuart.h"
#define SERIAL_APBUART_MAJOR TTY_MAJOR
#define SERIAL_APBUART_MINOR 64
#define UART_DUMMY_RSR_RX 0x8000 /* for ignore all read */
static void apbuart_tx_chars(struct uart_port *port);
static void apbuart_stop_tx(struct uart_port *port)
{
unsigned int cr;
cr = UART_GET_CTRL(port);
cr &= ~UART_CTRL_TI;
UART_PUT_CTRL(port, cr);
}
static void apbuart_start_tx(struct uart_port *port)
{
unsigned int cr;
cr = UART_GET_CTRL(port);
cr |= UART_CTRL_TI;
UART_PUT_CTRL(port, cr);
if (UART_GET_STATUS(port) & UART_STATUS_THE)
apbuart_tx_chars(port);
}
static void apbuart_stop_rx(struct uart_port *port)
{
unsigned int cr;
cr = UART_GET_CTRL(port);
cr &= ~(UART_CTRL_RI);
UART_PUT_CTRL(port, cr);
}
static void apbuart_enable_ms(struct uart_port *port)
{
/* No modem status change interrupts for APBUART */
}
static void apbuart_rx_chars(struct uart_port *port)
{
struct tty_struct *tty = port->state->port.tty;
unsigned int status, ch, rsr, flag;
unsigned int max_chars = port->fifosize;
status = UART_GET_STATUS(port);
while (UART_RX_DATA(status) && (max_chars--)) {
ch = UART_GET_CHAR(port);
flag = TTY_NORMAL;
port->icount.rx++;
rsr = UART_GET_STATUS(port) | UART_DUMMY_RSR_RX;
UART_PUT_STATUS(port, 0);
if (rsr & UART_STATUS_ERR) {
if (rsr & UART_STATUS_BR) {
rsr &= ~(UART_STATUS_FE | UART_STATUS_PE);
port->icount.brk++;
if (uart_handle_break(port))
goto ignore_char;
} else if (rsr & UART_STATUS_PE) {
port->icount.parity++;
} else if (rsr & UART_STATUS_FE) {
port->icount.frame++;
}
if (rsr & UART_STATUS_OE)
port->icount.overrun++;
rsr &= port->read_status_mask;
if (rsr & UART_STATUS_PE)
flag = TTY_PARITY;
else if (rsr & UART_STATUS_FE)
flag = TTY_FRAME;
}
if (uart_handle_sysrq_char(port, ch))
goto ignore_char;
uart_insert_char(port, rsr, UART_STATUS_OE, ch, flag);
ignore_char:
status = UART_GET_STATUS(port);
}
tty_flip_buffer_push(tty);
}
static void apbuart_tx_chars(struct uart_port *port)
{
struct circ_buf *xmit = &port->state->xmit;
int count;
if (port->x_char) {
UART_PUT_CHAR(port, port->x_char);
port->icount.tx++;
port->x_char = 0;
return;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
apbuart_stop_tx(port);
return;
}
/* amba: fill FIFO */
count = port->fifosize >> 1;
do {
UART_PUT_CHAR(port, xmit->buf[xmit->tail]);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
if (uart_circ_empty(xmit))
break;
} while (--count > 0);
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
if (uart_circ_empty(xmit))
apbuart_stop_tx(port);
}
static irqreturn_t apbuart_int(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
unsigned int status;
spin_lock(&port->lock);
status = UART_GET_STATUS(port);
if (status & UART_STATUS_DR)
apbuart_rx_chars(port);
if (status & UART_STATUS_THE)
apbuart_tx_chars(port);
spin_unlock(&port->lock);
return IRQ_HANDLED;
}
static unsigned int apbuart_tx_empty(struct uart_port *port)
{
unsigned int status = UART_GET_STATUS(port);
return status & UART_STATUS_THE ? TIOCSER_TEMT : 0;
}
static unsigned int apbuart_get_mctrl(struct uart_port *port)
{
/* The GRLIB APBUART handles flow control in hardware */
return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
}
static void apbuart_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
/* The GRLIB APBUART handles flow control in hardware */
}
static void apbuart_break_ctl(struct uart_port *port, int break_state)
{
/* We don't support sending break */
}
static int apbuart_startup(struct uart_port *port)
{
int retval;
unsigned int cr;
/* Allocate the IRQ */
retval = request_irq(port->irq, apbuart_int, 0, "apbuart", port);
if (retval)
return retval;
/* Finally, enable interrupts */
cr = UART_GET_CTRL(port);
UART_PUT_CTRL(port,
cr | UART_CTRL_RE | UART_CTRL_TE |
UART_CTRL_RI | UART_CTRL_TI);
return 0;
}
static void apbuart_shutdown(struct uart_port *port)
{
unsigned int cr;
/* disable all interrupts, disable the port */
cr = UART_GET_CTRL(port);
UART_PUT_CTRL(port,
cr & ~(UART_CTRL_RE | UART_CTRL_TE |
UART_CTRL_RI | UART_CTRL_TI));
/* Free the interrupt */
free_irq(port->irq, port);
}
static void apbuart_set_termios(struct uart_port *port,
struct ktermios *termios, struct ktermios *old)
{
unsigned int cr;
unsigned long flags;
unsigned int baud, quot;
/* Ask the core to calculate the divisor for us. */
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 16);
if (baud == 0)
panic("invalid baudrate %i\n", port->uartclk / 16);
/* uart_get_divisor calc a *16 uart freq, apbuart is *8 */
quot = (uart_get_divisor(port, baud)) * 2;
cr = UART_GET_CTRL(port);
cr &= ~(UART_CTRL_PE | UART_CTRL_PS);
if (termios->c_cflag & PARENB) {
cr |= UART_CTRL_PE;
if ((termios->c_cflag & PARODD))
cr |= UART_CTRL_PS;
}
/* Enable flow control. */
if (termios->c_cflag & CRTSCTS)
cr |= UART_CTRL_FL;
spin_lock_irqsave(&port->lock, flags);
/* Update the per-port timeout. */
uart_update_timeout(port, termios->c_cflag, baud);
port->read_status_mask = UART_STATUS_OE;
if (termios->c_iflag & INPCK)
port->read_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
/* Characters to ignore */
port->ignore_status_mask = 0;
if (termios->c_iflag & IGNPAR)
port->ignore_status_mask |= UART_STATUS_FE | UART_STATUS_PE;
/* Ignore all characters if CREAD is not set. */
if ((termios->c_cflag & CREAD) == 0)
port->ignore_status_mask |= UART_DUMMY_RSR_RX;
/* Set baud rate */
quot -= 1;
UART_PUT_SCAL(port, quot);
UART_PUT_CTRL(port, cr);
spin_unlock_irqrestore(&port->lock, flags);
}
static const char *apbuart_type(struct uart_port *port)
{
return port->type == PORT_APBUART ? "GRLIB/APBUART" : NULL;
}
static void apbuart_release_port(struct uart_port *port)
{
release_mem_region(port->mapbase, 0x100);
}
static int apbuart_request_port(struct uart_port *port)
{
return request_mem_region(port->mapbase, 0x100, "grlib-apbuart")
!= NULL ? 0 : -EBUSY;
return 0;
}
/* Configure/autoconfigure the port */
static void apbuart_config_port(struct uart_port *port, int flags)
{
if (flags & UART_CONFIG_TYPE) {
port->type = PORT_APBUART;
apbuart_request_port(port);
}
}
/* Verify the new serial_struct (for TIOCSSERIAL) */
static int apbuart_verify_port(struct uart_port *port,
struct serial_struct *ser)
{
int ret = 0;
if (ser->type != PORT_UNKNOWN && ser->type != PORT_APBUART)
ret = -EINVAL;
if (ser->irq < 0 || ser->irq >= NR_IRQS)
ret = -EINVAL;
if (ser->baud_base < 9600)
ret = -EINVAL;
return ret;
}
static struct uart_ops grlib_apbuart_ops = {
.tx_empty = apbuart_tx_empty,
.set_mctrl = apbuart_set_mctrl,
.get_mctrl = apbuart_get_mctrl,
.stop_tx = apbuart_stop_tx,
.start_tx = apbuart_start_tx,
.stop_rx = apbuart_stop_rx,
.enable_ms = apbuart_enable_ms,
.break_ctl = apbuart_break_ctl,
.startup = apbuart_startup,
.shutdown = apbuart_shutdown,
.set_termios = apbuart_set_termios,
.type = apbuart_type,
.release_port = apbuart_release_port,
.request_port = apbuart_request_port,
.config_port = apbuart_config_port,
.verify_port = apbuart_verify_port,
};
static struct uart_port grlib_apbuart_ports[UART_NR];
static struct device_node *grlib_apbuart_nodes[UART_NR];
static int apbuart_scan_fifo_size(struct uart_port *port, int portnumber)
{
int ctrl, loop = 0;
int status;
int fifosize;
unsigned long flags;
ctrl = UART_GET_CTRL(port);
/*
* Enable the transceiver and wait for it to be ready to send data.
* Clear interrupts so that this process will not be externally
* interrupted in the middle (which can cause the transceiver to
* drain prematurely).
*/
local_irq_save(flags);
UART_PUT_CTRL(port, ctrl | UART_CTRL_TE);
while (!UART_TX_READY(UART_GET_STATUS(port)))
loop++;
/*
* Disable the transceiver so data isn't actually sent during the
* actual test.
*/
UART_PUT_CTRL(port, ctrl & ~(UART_CTRL_TE));
fifosize = 1;
UART_PUT_CHAR(port, 0);
/*
* So long as transmitting a character increments the tranceivier FIFO
* length the FIFO must be at least that big. These bytes will
* automatically drain off of the FIFO.
*/
status = UART_GET_STATUS(port);
while (((status >> 20) & 0x3F) == fifosize) {
fifosize++;
UART_PUT_CHAR(port, 0);
status = UART_GET_STATUS(port);
}
fifosize--;
UART_PUT_CTRL(port, ctrl);
local_irq_restore(flags);
if (fifosize == 0)
fifosize = 1;
return fifosize;
}
static void apbuart_flush_fifo(struct uart_port *port)
{
int i;
for (i = 0; i < port->fifosize; i++)
UART_GET_CHAR(port);
}
/* ======================================================================== */
/* Console driver, if enabled */
/* ======================================================================== */
#ifdef CONFIG_SERIAL_GRLIB_GAISLER_APBUART_CONSOLE
static void apbuart_console_putchar(struct uart_port *port, int ch)
{
unsigned int status;
do {
status = UART_GET_STATUS(port);
} while (!UART_TX_READY(status));
UART_PUT_CHAR(port, ch);
}
static void
apbuart_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_port *port = &grlib_apbuart_ports[co->index];
unsigned int status, old_cr, new_cr;
/* First save the CR then disable the interrupts */
old_cr = UART_GET_CTRL(port);
new_cr = old_cr & ~(UART_CTRL_RI | UART_CTRL_TI);
UART_PUT_CTRL(port, new_cr);
uart_console_write(port, s, count, apbuart_console_putchar);
/*
* Finally, wait for transmitter to become empty
* and restore the TCR
*/
do {
status = UART_GET_STATUS(port);
} while (!UART_TX_READY(status));
UART_PUT_CTRL(port, old_cr);
}
static void __init
apbuart_console_get_options(struct uart_port *port, int *baud,
int *parity, int *bits)
{
if (UART_GET_CTRL(port) & (UART_CTRL_RE | UART_CTRL_TE)) {
unsigned int quot, status;
status = UART_GET_STATUS(port);
*parity = 'n';
if (status & UART_CTRL_PE) {
if ((status & UART_CTRL_PS) == 0)
*parity = 'e';
else
*parity = 'o';
}
*bits = 8;
quot = UART_GET_SCAL(port) / 8;
*baud = port->uartclk / (16 * (quot + 1));
}
}
static int __init apbuart_console_setup(struct console *co, char *options)
{
struct uart_port *port;
int baud = 38400;
int bits = 8;
int parity = 'n';
int flow = 'n';
pr_debug("apbuart_console_setup co=%p, co->index=%i, options=%s\n",
co, co->index, options);
/*
* Check whether an invalid uart number has been specified, and
* if so, search for the first available port that does have
* console support.
*/
if (co->index >= grlib_apbuart_port_nr)
co->index = 0;
port = &grlib_apbuart_ports[co->index];
spin_lock_init(&port->lock);
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
else
apbuart_console_get_options(port, &baud, &parity, &bits);
return uart_set_options(port, co, baud, parity, bits, flow);
}
static struct uart_driver grlib_apbuart_driver;
static struct console grlib_apbuart_console = {
.name = "ttyS",
.write = apbuart_console_write,
.device = uart_console_device,
.setup = apbuart_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
.data = &grlib_apbuart_driver,
};
static void grlib_apbuart_configure(void);
static int __init apbuart_console_init(void)
{
grlib_apbuart_configure();
register_console(&grlib_apbuart_console);
return 0;
}
console_initcall(apbuart_console_init);
#define APBUART_CONSOLE (&grlib_apbuart_console)
#else
#define APBUART_CONSOLE NULL
#endif
static struct uart_driver grlib_apbuart_driver = {
.owner = THIS_MODULE,
.driver_name = "serial",
.dev_name = "ttyS",
.major = SERIAL_APBUART_MAJOR,
.minor = SERIAL_APBUART_MINOR,
.nr = UART_NR,
.cons = APBUART_CONSOLE,
};
/* ======================================================================== */
/* OF Platform Driver */
/* ======================================================================== */
static int __devinit apbuart_probe(struct of_device *op,
const struct of_device_id *match)
{
int i = -1;
struct uart_port *port = NULL;
i = 0;
for (i = 0; i < grlib_apbuart_port_nr; i++) {
if (op->node == grlib_apbuart_nodes[i])
break;
}
port = &grlib_apbuart_ports[i];
port->dev = &op->dev;
uart_add_one_port(&grlib_apbuart_driver, (struct uart_port *) port);
apbuart_flush_fifo((struct uart_port *) port);
printk(KERN_INFO "grlib-apbuart at 0x%llx, irq %d\n",
(unsigned long long) port->mapbase, port->irq);
return 0;
}
static struct of_device_id __initdata apbuart_match[] = {
{
.name = "GAISLER_APBUART",
},
{},
};
static struct of_platform_driver grlib_apbuart_of_driver = {
.match_table = apbuart_match,
.probe = apbuart_probe,
.driver = {
.owner = THIS_MODULE,
.name = "grlib-apbuart",
},
};
static void grlib_apbuart_configure(void)
{
static int enum_done;
struct device_node *np, *rp;
struct uart_port *port = NULL;
const u32 *prop;
int freq_khz;
int v = 0, d = 0;
unsigned int addr;
int irq, line;
struct amba_prom_registers *regs;
if (enum_done)
return;
/* Get bus frequency */
rp = of_find_node_by_path("/");
rp = of_get_next_child(rp, NULL);
prop = of_get_property(rp, "clock-frequency", NULL);
freq_khz = *prop;
line = 0;
for_each_matching_node(np, apbuart_match) {
int *vendor = (int *) of_get_property(np, "vendor", NULL);
int *device = (int *) of_get_property(np, "device", NULL);
int *irqs = (int *) of_get_property(np, "interrupts", NULL);
regs = (struct amba_prom_registers *)
of_get_property(np, "reg", NULL);
if (vendor)
v = *vendor;
if (device)
d = *device;
if (!irqs || !regs)
return;
grlib_apbuart_nodes[line] = np;
addr = regs->phys_addr;
irq = *irqs;
port = &grlib_apbuart_ports[line];
port->mapbase = addr;
port->membase = ioremap(addr, sizeof(struct grlib_apbuart_regs_map));
port->irq = irq;
port->iotype = UPIO_MEM;
port->ops = &grlib_apbuart_ops;
port->flags = UPF_BOOT_AUTOCONF;
port->line = line;
port->uartclk = freq_khz * 1000;
port->fifosize = apbuart_scan_fifo_size((struct uart_port *) port, line);
line++;
/* We support maximum UART_NR uarts ... */
if (line == UART_NR)
break;
}
enum_done = 1;
grlib_apbuart_driver.nr = grlib_apbuart_port_nr = line;
}
static int __init grlib_apbuart_init(void)
{
int ret;
/* Find all APBUARTS in device the tree and initialize their ports */
grlib_apbuart_configure();
printk(KERN_INFO "Serial: GRLIB APBUART driver\n");
ret = uart_register_driver(&grlib_apbuart_driver);
if (ret) {
printk(KERN_ERR "%s: uart_register_driver failed (%i)\n",
__FILE__, ret);
return ret;
}
ret = of_register_platform_driver(&grlib_apbuart_of_driver);
if (ret) {
printk(KERN_ERR
"%s: of_register_platform_driver failed (%i)\n",
__FILE__, ret);
uart_unregister_driver(&grlib_apbuart_driver);
return ret;
}
return ret;
}
static void __exit grlib_apbuart_exit(void)
{
int i;
for (i = 0; i < grlib_apbuart_port_nr; i++)
uart_remove_one_port(&grlib_apbuart_driver,
&grlib_apbuart_ports[i]);
uart_unregister_driver(&grlib_apbuart_driver);
of_unregister_platform_driver(&grlib_apbuart_of_driver);
}
module_init(grlib_apbuart_init);
module_exit(grlib_apbuart_exit);
MODULE_AUTHOR("Aeroflex Gaisler AB");
MODULE_DESCRIPTION("GRLIB APBUART serial driver");
MODULE_VERSION("2.1");
MODULE_LICENSE("GPL");

64
drivers/serial/apbuart.h Normal file
Просмотреть файл

@ -0,0 +1,64 @@
#ifndef __GRLIB_APBUART_H__
#define __GRLIB_APBUART_H__
#include <asm/io.h>
#define UART_NR 8
static int grlib_apbuart_port_nr;
struct grlib_apbuart_regs_map {
u32 data;
u32 status;
u32 ctrl;
u32 scaler;
};
struct amba_prom_registers {
unsigned int phys_addr;
unsigned int reg_size;
};
/*
* The following defines the bits in the APBUART Status Registers.
*/
#define UART_STATUS_DR 0x00000001 /* Data Ready */
#define UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
#define UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
#define UART_STATUS_BR 0x00000008 /* Break Error */
#define UART_STATUS_OE 0x00000010 /* RX Overrun Error */
#define UART_STATUS_PE 0x00000020 /* RX Parity Error */
#define UART_STATUS_FE 0x00000040 /* RX Framing Error */
#define UART_STATUS_ERR 0x00000078 /* Error Mask */
/*
* The following defines the bits in the APBUART Ctrl Registers.
*/
#define UART_CTRL_RE 0x00000001 /* Receiver enable */
#define UART_CTRL_TE 0x00000002 /* Transmitter enable */
#define UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
#define UART_CTRL_TI 0x00000008 /* Transmitter irq */
#define UART_CTRL_PS 0x00000010 /* Parity select */
#define UART_CTRL_PE 0x00000020 /* Parity enable */
#define UART_CTRL_FL 0x00000040 /* Flow control enable */
#define UART_CTRL_LB 0x00000080 /* Loopback enable */
#define APBBASE(port) ((struct grlib_apbuart_regs_map *)((port)->membase))
#define APBBASE_DATA_P(port) (&(APBBASE(port)->data))
#define APBBASE_STATUS_P(port) (&(APBBASE(port)->status))
#define APBBASE_CTRL_P(port) (&(APBBASE(port)->ctrl))
#define APBBASE_SCALAR_P(port) (&(APBBASE(port)->scaler))
#define UART_GET_CHAR(port) (__raw_readl(APBBASE_DATA_P(port)))
#define UART_PUT_CHAR(port, v) (__raw_writel(v, APBBASE_DATA_P(port)))
#define UART_GET_STATUS(port) (__raw_readl(APBBASE_STATUS_P(port)))
#define UART_PUT_STATUS(port, v)(__raw_writel(v, APBBASE_STATUS_P(port)))
#define UART_GET_CTRL(port) (__raw_readl(APBBASE_CTRL_P(port)))
#define UART_PUT_CTRL(port, v) (__raw_writel(v, APBBASE_CTRL_P(port)))
#define UART_GET_SCAL(port) (__raw_readl(APBBASE_SCALAR_P(port)))
#define UART_PUT_SCAL(port, v) (__raw_writel(v, APBBASE_SCALAR_P(port)))
#define UART_RX_DATA(s) (((s) & UART_STATUS_DR) != 0)
#define UART_TX_READY(s) (((s) & UART_STATUS_THE) != 0)
#endif /* __GRLIB_APBUART_H__ */

6
drivers/watchdog/riowd.c
Просмотреть файл

@ -10,7 +10,6 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/smp_lock.h>
#include <linux/watchdog.h>
#include <linux/of.h>
#include <linux/of_device.h>
@ -75,7 +74,6 @@ static void riowd_writereg(struct riowd *p, u8 val, int index)
static int riowd_open(struct inode *inode, struct file *filp)
{
cycle_kernel_lock();
nonseekable_open(inode, filp);
return 0;
}
@ -194,6 +192,8 @@ static int __devinit riowd_probe(struct of_device *op,
printk(KERN_ERR PFX "Cannot map registers.\n");
goto out_free;
}
/* Make miscdev useable right away */
riowd_device = p;
err = misc_register(&riowd_miscdev);
if (err) {
@ -205,10 +205,10 @@ static int __devinit riowd_probe(struct of_device *op,
"regs at %p\n", riowd_timeout, p->regs);
dev_set_drvdata(&op->dev, p);
riowd_device = p;
return 0;
out_iounmap:
riowd_device = NULL;
of_iounmap(&op->resource[0], p->regs, 2);
out_free:

3
include/linux/serial_core.h
Просмотреть файл

@ -179,6 +179,9 @@
/* BCM63xx family SoCs */
#define PORT_BCM63XX 89
/* Aeroflex Gaisler GRLIB APBUART */
#define PORT_APBUART 90
#ifdef __KERNEL__
#include <linux/compiler.h>