AcoSail/kernel_optimize_test
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Merge branch 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

Browse Source 
* 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  serial: sh-sci: Reorder the SCxTDR write after the TDxE clear.
  sh: __copy_user function can corrupt the stack in case of exception
  sh: Fixed the TMU0 reload value on resume
  sh: Don't factor in PAGE_OFFSET for valid_phys_addr_range() check.
  sh: early printk port type fix
  i2c: fix i2c-sh_mobile rx underrun
  sh: Provide a sane valid_phys_addr_range() to prevent TLB reset with PMB.
  usb: r8a66597-hcd: fix wrong data access in SuperH on-chip USB
  fix sci type for SH7723
  serial: sh-sci: fix cannot work SH7723 SCIFA
  sh: Handle fixmap TLB eviction more coherently.
This commit is contained in:
Linus Torvalds 2008-11-15 12:10:32 -08:00
commit 537a2f889a
15 changed files with 108 additions and 32 deletions
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4
arch/sh/include/asm/io.h
View File

@ -293,6 +293,10 @@ __ioremap_mode(unsigned long offset, unsigned long size, unsigned long flags)
*/
#define xlate_dev_kmem_ptr(p) p
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
int valid_phys_addr_range(unsigned long addr, size_t size);
int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
#endif /* __KERNEL__ */
#endif /* __ASM_SH_IO_H */

6
arch/sh/include/asm/pgtable.h
View File

@ -148,6 +148,12 @@ extern void paging_init(void);
extern void page_table_range_init(unsigned long start, unsigned long end,
pgd_t *pgd);
#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_CPU_SH4) && defined(CONFIG_MMU)
extern void kmap_coherent_init(void);
#else
#define kmap_coherent_init() do { } while (0)
#endif
#include <asm-generic/pgtable.h>
#endif /* __ASM_SH_PGTABLE_H */

6
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
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@ -119,17 +119,17 @@ static struct plat_sci_port sci_platform_data[] = {
},{
.mapbase = 0xa4e30000,
.flags = UPF_BOOT_AUTOCONF,
.type = PORT_SCI,
.type = PORT_SCIFA,
.irqs = { 56, 56, 56, 56 },
},{
.mapbase = 0xa4e40000,
.flags = UPF_BOOT_AUTOCONF,
.type = PORT_SCI,
.type = PORT_SCIFA,
.irqs = { 88, 88, 88, 88 },
},{
.mapbase = 0xa4e50000,
.flags = UPF_BOOT_AUTOCONF,
.type = PORT_SCI,
.type = PORT_SCIFA,
.irqs = { 109, 109, 109, 109 },
}, {
.flags = 0,

3
arch/sh/kernel/early_printk.c
View File

@ -75,6 +75,7 @@ static struct console bios_console = {
#endif
static struct uart_port scif_port = {
.type = PORT_SCIF,
.mapbase = CONFIG_EARLY_SCIF_CONSOLE_PORT,
.membase = (char __iomem *)CONFIG_EARLY_SCIF_CONSOLE_PORT,
};
@ -84,9 +85,9 @@ static void scif_sercon_putc(int c)
while (((sci_in(&scif_port, SCFDR) & EPK_FIFO_BITS) >= EPK_FIFO_SIZE))
;
sci_out(&scif_port, SCxTDR, c);
sci_in(&scif_port, SCxSR);
sci_out(&scif_port, SCxSR, 0xf3 & ~(0x20 | 0x40));
sci_out(&scif_port, SCxTDR, c);
while ((sci_in(&scif_port, SCxSR) & 0x40) == 0)
;

2
arch/sh/kernel/timers/timer-tmu.c
View File

@ -120,7 +120,7 @@ static void tmu_set_mode(enum clock_event_mode mode,
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
ctrl_outl(ctrl_inl(TMU0_TCNT), TMU0_TCOR);
ctrl_outl(tmu_latest_interval[TMU0], TMU0_TCOR);
break;
case CLOCK_EVT_MODE_ONESHOT:
ctrl_outl(0, TMU0_TCOR);

11
arch/sh/lib/copy_page.S
View File

@ -80,6 +80,11 @@ ENTRY(copy_page)
.section __ex_table, "a"; \
.long 9999b, 6000f ; \
.previous
#define EX_NO_POP(...) \
9999: __VA_ARGS__ ; \
.section __ex_table, "a"; \
.long 9999b, 6005f ; \
.previous
ENTRY(__copy_user)
! Check if small number of bytes
mov #11,r0
@ -139,9 +144,9 @@ EX( mov.b r1,@r4 )
bt 1f
2:
EX( mov.b @r5+,r0 )
EX_NO_POP( mov.b @r5+,r0 )
dt r6
EX( mov.b r0,@r4 )
EX_NO_POP( mov.b r0,@r4 )
bf/s 2b
add #1,r4
@ -150,7 +155,7 @@ EX( mov.b r0,@r4 )
# Exception handler:
.section .fixup, "ax"
6000:
6005:
mov.l 8000f,r1
mov r3,r0
jmp @r1

2
arch/sh/mm/Makefile_32
View File

@ -2,7 +2,7 @@
# Makefile for the Linux SuperH-specific parts of the memory manager.
#
obj-y := init.o extable_32.o consistent.o
obj-y := init.o extable_32.o consistent.o mmap.o
ifndef CONFIG_CACHE_OFF
cache-$(CONFIG_CPU_SH2) := cache-sh2.o

2
arch/sh/mm/Makefile_64
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@ -2,7 +2,7 @@
# Makefile for the Linux SuperH-specific parts of the memory manager.
#
obj-y := init.o consistent.o
obj-y := init.o consistent.o mmap.o
mmu-y := tlb-nommu.o pg-nommu.o extable_32.o
mmu-$(CONFIG_MMU) := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \

12
arch/sh/mm/init.c
View File

@ -137,6 +137,7 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
void __init paging_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];
unsigned long vaddr;
int nid;
/* We don't need to map the kernel through the TLB, as
@ -148,10 +149,15 @@ void __init paging_init(void)
* check for a null value. */
set_TTB(swapper_pg_dir);
/* Populate the relevant portions of swapper_pg_dir so that
/*
* Populate the relevant portions of swapper_pg_dir so that
* we can use the fixmap entries without calling kmalloc.
* pte's will be filled in by __set_fixmap(). */
page_table_range_init(FIXADDR_START, FIXADDR_TOP, swapper_pg_dir);
* pte's will be filled in by __set_fixmap().
*/
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
page_table_range_init(vaddr, 0, swapper_pg_dir);
kmap_coherent_init();
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));

31
arch/sh/mm/mmap.c Normal file
View File

@ -0,0 +1,31 @@
/*
* arch/sh/mm/mmap.c
*
* Copyright (C) 2008 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/io.h>
#include <linux/mm.h>
#include <asm/page.h>
/*
* You really shouldn't be using read() or write() on /dev/mem. This
* might go away in the future.
*/
int valid_phys_addr_range(unsigned long addr, size_t count)
{
if (addr < __MEMORY_START)
return 0;
if (addr + count > __pa(high_memory))
return 0;
return 1;
}
int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
{
return 1;
}

17
arch/sh/mm/pg-sh4.c
View File

@ -7,6 +7,7 @@
* Released under the terms of the GNU GPL v2.0.
*/
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/fs.h>
#include <linux/highmem.h>
@ -16,6 +17,20 @@
#define CACHE_ALIAS (current_cpu_data.dcache.alias_mask)
#define kmap_get_fixmap_pte(vaddr) \
pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr))
static pte_t *kmap_coherent_pte;
void __init kmap_coherent_init(void)
{
unsigned long vaddr;
/* cache the first coherent kmap pte */
vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
}
static inline void *kmap_coherent(struct page *page, unsigned long addr)
{
enum fixed_addresses idx;
@ -34,6 +49,8 @@ static inline void *kmap_coherent(struct page *page, unsigned long addr)
update_mmu_cache(NULL, vaddr, pte);
set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte);
return (void *)vaddr;
}

3
drivers/i2c/busses/i2c-sh_mobile.c
View File

@ -318,7 +318,8 @@ static int sh_mobile_i2c_isr_rx(struct sh_mobile_i2c_data *pd)
} else
data = i2c_op(pd, OP_RX, 0);
pd->msg->buf[real_pos] = data;
if (real_pos >= 0)
pd->msg->buf[real_pos] = data;
} while (0);
pd->pos++;

22
drivers/serial/sh-sci.c
View File

@ -144,9 +144,9 @@ static void put_char(struct uart_port *port, char c)
status = sci_in(port, SCxSR);
} while (!(status & SCxSR_TDxE(port)));
sci_out(port, SCxTDR, c);
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
sci_out(port, SCxTDR, c);
spin_unlock_irqrestore(&port->lock, flags);
}
@ -478,10 +478,10 @@ static void sci_transmit_chars(struct uart_port *port)
return;
}
if (port->type == PORT_SCIF)
count = scif_txroom(port);
else
if (port->type == PORT_SCI)
count = sci_txroom(port);
else
count = scif_txroom(port);
do {
unsigned char c;
@ -510,7 +510,7 @@ static void sci_transmit_chars(struct uart_port *port)
} else {
ctrl = sci_in(port, SCSCR);
if (port->type == PORT_SCIF) {
if (port->type != PORT_SCI) {
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
}
@ -536,10 +536,10 @@ static inline void sci_receive_chars(struct uart_port *port)
return;
while (1) {
if (port->type == PORT_SCIF)
count = scif_rxroom(port);
else
if (port->type == PORT_SCI)
count = sci_rxroom(port);
else
count = scif_rxroom(port);
/* Don't copy more bytes than there is room for in the buffer */
count = tty_buffer_request_room(tty, count);
@ -714,7 +714,7 @@ static inline int sci_handle_breaks(struct uart_port *port)
#if defined(SCIF_ORER)
/* XXX: Handle SCIF overrun error */
if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
if (port->type != PORT_SCI && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
sci_out(port, SCLSR, 0);
if (tty_insert_flip_char(tty, 0, TTY_OVERRUN)) {
copied++;
@ -1042,7 +1042,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
if (port->type == PORT_SCIF)
if (port->type != PORT_SCI)
sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
smr_val = sci_in(port, SCSMR) & 3;
@ -1085,6 +1085,7 @@ static const char *sci_type(struct uart_port *port)
case PORT_SCI: return "sci";
case PORT_SCIF: return "scif";
case PORT_IRDA: return "irda";
case PORT_SCIFA: return "scifa";
}
return NULL;
@ -1112,6 +1113,7 @@ static void sci_config_port(struct uart_port *port, int flags)
s->init_pins = sci_init_pins_sci;
break;
case PORT_SCIF:
case PORT_SCIFA:
s->init_pins = sci_init_pins_scif;
break;
case PORT_IRDA:

16
drivers/serial/sh-sci.h
View File

@ -289,18 +289,18 @@
#define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
static inline unsigned int sci_##name##_in(struct uart_port *port) \
{ \
if (port->type == PORT_SCI) { \
SCI_IN(sci_size, sci_offset) \
} else { \
SCI_IN(scif_size, scif_offset); \
if (port->type == PORT_SCIF) { \
SCI_IN(scif_size, scif_offset) \
} else { /* PORT_SCI or PORT_SCIFA */ \
SCI_IN(sci_size, sci_offset); \
} \
} \
static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
{ \
if (port->type == PORT_SCI) { \
SCI_OUT(sci_size, sci_offset, value) \
} else { \
SCI_OUT(scif_size, scif_offset, value); \
if (port->type == PORT_SCIF) { \
SCI_OUT(scif_size, scif_offset, value) \
} else { /* PORT_SCI or PORT_SCIFA */ \
SCI_OUT(sci_size, sci_offset, value); \
} \
}

3
include/linux/serial_core.h
View File

@ -155,6 +155,9 @@
#define PORT_SC26XX 82
/* SH-SCI */
#define PORT_SCIFA 83
#ifdef __KERNEL__
#include <linux/compiler.h>