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add initial support for hardware accelerated byte swapping

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SVN-Revision: 7708
This commit is contained in:
Gabor Juhos 2007-06-22 10:16:47 +00:00
parent 426f0b477b
commit 6d5ce3ce25
6 changed files with 95 additions and 14 deletions
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1
target/linux/adm5120-2.6/config/default
View file

@ -2,6 +2,7 @@ CONFIG_32BIT=y
# CONFIG_64BIT is not set
# CONFIG_64BIT_PHYS_ADDR is not set
CONFIG_ADM5120_GPIO=y
CONFIG_ADM5120_HARDWARE_SWAB=y
CONFIG_ADM5120_NR_UARTS=2
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set

16
target/linux/adm5120-2.6/files/arch/mips/adm5120/Kconfig Normal file
View file

@ -0,0 +1,16 @@
if MIPS_ADM5120
menu "ADM5120 Implementation Options"
config PCI_ADM5120
bool "Enable PCI support"
select PCI
default y
config ADM5120_HARDWARE_SWAB
bool "Enable hardware accelerated byte-swapping"
default y
endmenu
endif

39
target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c
View file

@ -18,6 +18,7 @@
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/byteorder.h>
#include <asm/mach-adm5120/adm5120_defs.h>
#include <asm/mach-adm5120/adm5120_switch.h>
@ -775,7 +776,7 @@ static void __init adm5120_detect_memsize(void)
u32 size, maxsize;
volatile u8 *p,*r;
u8 t;
memctrl = SWITCH_READ(SWITCH_REG_MEMCTRL);
switch (memctrl & MEMCTRL_SDRS_MASK) {
case MEMCTRL_SDRS_4M:
@ -791,7 +792,7 @@ static void __init adm5120_detect_memsize(void)
maxsize = 64 << 20;
break;
}
/* FIXME: need to disable buffers for both SDRAM bank? */
mem_dbg("checking for %ldMB chip\n",maxsize >> 20);
@ -800,7 +801,7 @@ static void __init adm5120_detect_memsize(void)
p = (volatile u8 *)KSEG1ADDR(0);
t = *p;
for (size = 2<<20; size <= (maxsize >> 1); size <<= 1) {
#if 1
#if 1
r = (p+size);
*p = 0x55;
mem_dbg("1st pattern at 0x%lx is 0x%02x\n", size, *r);
@ -818,7 +819,7 @@ static void __init adm5120_detect_memsize(void)
mem_dbg("1st pattern at 0x%lx is 0x%02x\n", size, p[size]);
if (p[size] != 0x55)
continue;
p[0] = 0xAA;
mem_dbg("2nd pattern at 0x%lx is 0x%02x\n", size, p[size]);
if (p[size] != 0xAA)
@ -836,13 +837,13 @@ static void __init adm5120_detect_memsize(void)
if (size == (32 << 20))
/* if bank size is 32MB, 2nd bank is not supported */
goto out;
if ((memctrl & MEMCTRL_SDR1_ENABLE) == 0)
/* if 2nd bank is not enabled, we are done */
goto out;
/*
* some bootloaders enable 2nd bank, even if the 2nd SDRAM chip
* some bootloaders enable 2nd bank, even if the 2nd SDRAM chip
* are missing.
*/
mem_dbg("checking second bank\n");
@ -851,11 +852,11 @@ static void __init adm5120_detect_memsize(void)
*p = 0x55;
if (*p != 0x55)
goto out;
*p = 0xAA;
if (*p != 0xAA)
goto out;
*p = t;
if (maxsize != size) {
/* adjusting MECTRL register */
@ -897,11 +898,31 @@ void __init adm5120_info_show(void)
printk("Memory size : %ldMB\n", adm5120_memsize >> 20);
}
void __init adm5120_swab_test(void)
{
#if CONFIG_ADM5120_HARDWARE_SWAB
u32 t1,t2;
t1 = 0x1234;
t2 = swab16(t1);
printk("hardware swab16 test %s, data:0x%04X, result:0x%04X\n",
(t2 == 0x3412) ? "passed" :"failed", t1, t2);
t1 = 0x12345678;
t2 = swab32(t1);
printk("hardware swab32 test %s, data:0x%08X, result:0x%08X\n",
(t2 == 0x78563412) ? "passed" :"failed", t1, t2);
#endif /* CONFIG_ADM5120_HARDWARE_SWAB */
}
void __init adm5120_info_init(void)
{
adm5120_detect_cpuinfo();
adm5120_detect_memsize();
adm5120_detect_board();
adm5120_info_show();
adm5120_swab_test();
}

14
target/linux/adm5120-2.6/patches/001-adm5120.patch
View file

@ -2,7 +2,7 @@ Index: linux-2.6.21.1/arch/mips/Kconfig
===================================================================
--- linux-2.6.21.1.orig/arch/mips/Kconfig
+++ linux-2.6.21.1/arch/mips/Kconfig
@@ -16,6 +16,21 @@ choice
@@ -16,6 +16,17 @@ choice
prompt "System type"
default SGI_IP22
@ -16,14 +16,18 @@ Index: linux-2.6.21.1/arch/mips/Kconfig
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
+ select GENERIC_GPIO
+
+config PCI_ADM5120
+ bool "Add PCI control support for ADM5120"
+ depends on MIPS_ADM5120 && PCI
+
config MIPS_MTX1
bool "4G Systems MTX-1 board"
select DMA_NONCOHERENT
@@ -766,6 +775,7 @@
endchoice
+source "arch/mips/adm5120/Kconfig"
source "arch/mips/ddb5xxx/Kconfig"
source "arch/mips/gt64120/ev64120/Kconfig"
source "arch/mips/jazz/Kconfig"
Index: linux-2.6.21.1/arch/mips/Makefile
===================================================================
--- linux-2.6.21.1.orig/arch/mips/Makefile

38
target/linux/adm5120-2.6/patches/008-adm5120_hardware_swab.patch Normal file
View file

@ -0,0 +1,38 @@
--- linux-2.6.19.2/include/asm-mips/byteorder.h 2007-01-10 20:10:37.000000000 +0100
+++ linux-2.6.19.2.new/include/asm-mips/byteorder.h 2007-05-16 21:14:47.000000000 +0200
@@ -58,6 +58,35 @@
#endif /* CONFIG_CPU_MIPSR2 */
+#ifdef CONFIG_ADM5120_HARDWARE_SWAB
+
+static __inline__ __attribute_const__ __u16 ___adm5120__swab16(__u16 x)
+{
+ __asm__ (
+ " sw %2, 0xC8(%1) \n"
+ " lhu %0, 0xCC(%1) \n"
+ : "=r" (x)
+ : "r" (0xB2000000), "r" (x));
+
+ return x;
+}
+
+static __inline__ __attribute_const__ __u32 ___adm5120__swab32(__u32 x)
+{
+ __asm__ (
+ " sw %2, 0xC8(%1) \n"
+ " lw %0, 0xCC(%1) \n"
+ : "=r" (x)
+ : "r" (0xB2000000), "r" (x));
+
+ return x;
+}
+
+#define __arch__swab16(x) ___adm5120__swab16(x)
+#define __arch__swab32(x) ___adm5120__swab32(x)
+
+#endif /* CONFIG_ADM5120_HARDWARE_SWAB */
+
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __BYTEORDER_HAS_U64__
# define __SWAB_64_THRU_32__

1
target/linux/adm5120eb-2.6/config/default
View file

@ -2,6 +2,7 @@ CONFIG_32BIT=y
# CONFIG_64BIT is not set
# CONFIG_64BIT_PHYS_ADDR is not set
CONFIG_ADM5120_GPIO=y
CONFIG_ADM5120_HARDWARE_SWAB=y
CONFIG_ADM5120_NR_UARTS=2
# CONFIG_ATM_DRIVERS is not set
# CONFIG_ARCH_HAS_ILOG2_U32 is not set