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Merge branch 'unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32

Browse Source 
* 'unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32:
  unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable
  unicore32 core architecture: remove duplicated #include
  unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state
  unicore32 fix: remove arch-specific futex support
  unicore32 ldscript fix: add cacheline parameter to PERCPU() macro
This commit is contained in:
Linus Torvalds 2011-04-04 08:33:21 -07:00
commit 3230ca9dc6
11 changed files with 24 additions and 217 deletions
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2
arch/unicore32/Makefile
View File

@ -48,7 +48,7 @@ ASM_GENERIC_HEADERS += bitsperlong.h bug.h bugs.h
ASM_GENERIC_HEADERS += cputime.h current.h
ASM_GENERIC_HEADERS += device.h div64.h
ASM_GENERIC_HEADERS += emergency-restart.h errno.h
ASM_GENERIC_HEADERS += fb.h fcntl.h ftrace.h
ASM_GENERIC_HEADERS += fb.h fcntl.h ftrace.h futex.h
ASM_GENERIC_HEADERS += hardirq.h hw_irq.h
ASM_GENERIC_HEADERS += ioctl.h ioctls.h ipcbuf.h irq_regs.h
ASM_GENERIC_HEADERS += kdebug.h kmap_types.h

143
arch/unicore32/include/asm/futex.h
View File

@ -1,143 +0,0 @@
/*
* linux/arch/unicore32/include/asm/futex.h
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __UNICORE_FUTEX_H__
#define __UNICORE_FUTEX_H__
#ifdef __KERNEL__
#include <linux/futex.h>
#include <linux/preempt.h>
#include <linux/uaccess.h>
#include <linux/errno.h>
#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \
__asm__ __volatile__( \
"1: ldw.u %1, [%2]\n" \
" " insn "\n" \
"2: stw.u %0, [%2]\n" \
" mov %0, #0\n" \
"3:\n" \
" .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4f, 2b, 4f\n" \
" .popsection\n" \
" .pushsection .fixup,\"ax\"\n" \
"4: mov %0, %4\n" \
" b 3b\n" \
" .popsection" \
: "=&r" (ret), "=&r" (oldval) \
: "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \
: "cc", "memory")
static inline int
futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
int oparg = (encoded_op << 8) >> 20;
int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret;
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
pagefault_disable(); /* implies preempt_disable() */
switch (op) {
case FUTEX_OP_SET:
__futex_atomic_op("mov %0, %3", ret, oldval, uaddr, oparg);
break;
case FUTEX_OP_ADD:
__futex_atomic_op("add %0, %1, %3", ret, oldval, uaddr, oparg);
break;
case FUTEX_OP_OR:
__futex_atomic_op("or %0, %1, %3", ret, oldval, uaddr, oparg);
break;
case FUTEX_OP_ANDN:
__futex_atomic_op("and %0, %1, %3",
ret, oldval, uaddr, ~oparg);
break;
case FUTEX_OP_XOR:
__futex_atomic_op("xor %0, %1, %3", ret, oldval, uaddr, oparg);
break;
default:
ret = -ENOSYS;
}
pagefault_enable(); /* subsumes preempt_enable() */
if (!ret) {
switch (cmp) {
case FUTEX_OP_CMP_EQ:
ret = (oldval == cmparg);
break;
case FUTEX_OP_CMP_NE:
ret = (oldval != cmparg);
break;
case FUTEX_OP_CMP_LT:
ret = (oldval < cmparg);
break;
case FUTEX_OP_CMP_GE:
ret = (oldval >= cmparg);
break;
case FUTEX_OP_CMP_LE:
ret = (oldval <= cmparg);
break;
case FUTEX_OP_CMP_GT:
ret = (oldval > cmparg);
break;
default:
ret = -ENOSYS;
}
}
return ret;
}
static inline int
futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
{
int val;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
pagefault_disable(); /* implies preempt_disable() */
__asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
"1: ldw.u %0, [%3]\n"
" cmpxor.a %0, %1\n"
" bne 3f\n"
"2: stw.u %2, [%3]\n"
"3:\n"
" .pushsection __ex_table,\"a\"\n"
" .align 3\n"
" .long 1b, 4f, 2b, 4f\n"
" .popsection\n"
" .pushsection .fixup,\"ax\"\n"
"4: mov %0, %4\n"
" b 3b\n"
" .popsection"
: "=&r" (val)
: "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
: "cc", "memory");
pagefault_enable(); /* subsumes preempt_enable() */
return val;
}
#endif /* __KERNEL__ */
#endif /* __UNICORE_FUTEX_H__ */

10
arch/unicore32/include/mach/PKUnity.h
View File

@ -23,16 +23,6 @@
#define PKUNITY_SDRAM_BASE 0x00000000 /* 0x00000000 - 0x7FFFFFFF 2GB */
#define PKUNITY_MMIO_BASE 0x80000000 /* 0x80000000 - 0xFFFFFFFF 2GB */
/*
* PKUNITY Memory Map Addresses: 0x0D000000 - 0x0EFFFFFF (32MB)
* 0x0D000000 - 0x0DFFFFFF 16MB: for UVC
* 0x0E000000 - 0x0EFFFFFF 16MB: for UNIGFX
*/
#define PKUNITY_UVC_MMAP_BASE 0x0D000000
#define PKUNITY_UVC_MMAP_SIZE 0x01000000 /* 16MB */
#define PKUNITY_UNIGFX_MMAP_BASE 0x0E000000
#define PKUNITY_UNIGFX_MMAP_SIZE 0x01000000 /* 16MB */
/*
* PKUNITY System Bus Addresses (PCI): 0x80000000 - 0xBFFFFFFF (1GB)
* 0x80000000 - 0x8000000B 12B PCI Configuration regs

1
arch/unicore32/include/mach/memory.h
View File

@ -50,7 +50,6 @@ void puv3_pci_adjust_zones(unsigned long *size, unsigned long *holes);
/* kuser area */
#define KUSER_VECPAGE_BASE (KUSER_BASE + UL(0x3fff0000))
#define KUSER_UNIGFX_BASE (PAGE_OFFSET + PKUNITY_UNIGFX_MMAP_BASE)
/* kuser_vecpage (0xbfff0000) is ro, and vectors page (0xffff0000) is rw */
#define kuser_vecpage_to_vectors(x) ((x) - (KUSER_VECPAGE_BASE) \
+ (VECTORS_BASE))

5
arch/unicore32/kernel/puv3-core.c
View File

@ -99,11 +99,6 @@ static struct resource puv3_unigfx_resources[] = {
.end = io_v2p(PKUNITY_UNIGFX_BASE) + 0xfff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = PKUNITY_UNIGFX_MMAP_BASE,
.end = PKUNITY_UNIGFX_MMAP_BASE + PKUNITY_UNIGFX_MMAP_SIZE,
.flags = IORESOURCE_MEM,
},
};
static struct resource puv3_rtc_resources[] = {

9
arch/unicore32/kernel/rtc.c
View File

@ -88,11 +88,6 @@ static int puv3_rtc_setpie(struct device *dev, int enabled)
return 0;
}
static int puv3_rtc_setfreq(struct device *dev, int freq)
{
return 0;
}
/* Time read/write */
static int puv3_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
@ -214,8 +209,6 @@ static const struct rtc_class_ops puv3_rtcops = {
.set_time = puv3_rtc_settime,
.read_alarm = puv3_rtc_getalarm,
.set_alarm = puv3_rtc_setalarm,
.irq_set_freq = puv3_rtc_setfreq,
.irq_set_state = puv3_rtc_setpie,
.proc = puv3_rtc_proc,
};
@ -294,8 +287,6 @@ static int puv3_rtc_probe(struct platform_device *pdev)
puv3_rtc_enable(pdev, 1);
puv3_rtc_setfreq(&pdev->dev, 1);
/* register RTC and exit */
rtc = rtc_device_register("pkunity", &pdev->dev, &puv3_rtcops,

15
arch/unicore32/kernel/setup.c
View File

@ -63,12 +63,6 @@ static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
* Standard memory resources
*/
static struct resource mem_res[] = {
{
.name = "Video RAM",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
},
{
.name = "Kernel text",
.start = 0,
@ -83,9 +77,8 @@ static struct resource mem_res[] = {
}
};
#define video_ram mem_res[0]
#define kernel_code mem_res[1]
#define kernel_data mem_res[2]
#define kernel_code mem_res[0]
#define kernel_data mem_res[1]
/*
* These functions re-use the assembly code in head.S, which
@ -224,10 +217,6 @@ request_standard_resources(struct meminfo *mi)
kernel_data.end <= res->end)
request_resource(res, &kernel_data);
}
video_ram.start = PKUNITY_UNIGFX_MMAP_BASE;
video_ram.end = PKUNITY_UNIGFX_MMAP_BASE + PKUNITY_UNIGFX_MMAP_SIZE;
request_resource(&iomem_resource, &video_ram);
}
static void (*init_machine)(void) __initdata;

1
arch/unicore32/kernel/traps.c
View File

@ -22,7 +22,6 @@
#include <linux/delay.h>
#include <linux/hardirq.h>
#include <linux/init.h>
#include <linux/uaccess.h>
#include <linux/atomic.h>
#include <linux/unistd.h>

7
arch/unicore32/kernel/vmlinux.lds.S
View File

@ -14,6 +14,7 @@
#include <asm/thread_info.h>
#include <asm/memory.h>
#include <asm/page.h>
#include <asm/cache.h>
OUTPUT_ARCH(unicore32)
ENTRY(stext)
@ -29,7 +30,7 @@ SECTIONS
HEAD_TEXT_SECTION
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
PERCPU(PAGE_SIZE)
PERCPU(L1_CACHE_BYTES, PAGE_SIZE)
__init_end = .;
_stext = .;
@ -45,10 +46,10 @@ SECTIONS
_sdata = .;
RO_DATA_SECTION(PAGE_SIZE)
RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
_edata = .;
EXCEPTION_TABLE(32)
EXCEPTION_TABLE(L1_CACHE_BYTES)
NOTES
BSS_SECTION(0, 0, 0)

20
arch/unicore32/mm/mmu.c
View File

@ -338,15 +338,6 @@ void __init uc32_mm_memblock_reserve(void)
* and can only be in node 0.
*/
memblock_reserve(__pa(swapper_pg_dir), PTRS_PER_PGD * sizeof(pgd_t));
#ifdef CONFIG_PUV3_UNIGFX
/*
* These should likewise go elsewhere. They pre-reserve the
* screen/video memory region at the 48M~64M of main system memory.
*/
memblock_reserve(PKUNITY_UNIGFX_MMAP_BASE, PKUNITY_UNIGFX_MMAP_SIZE);
memblock_reserve(PKUNITY_UVC_MMAP_BASE, PKUNITY_UVC_MMAP_SIZE);
#endif
}
/*
@ -370,17 +361,6 @@ static void __init devicemaps_init(void)
for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
/*
* Create a mapping for UniGFX VRAM
*/
#ifdef CONFIG_PUV3_UNIGFX
map.pfn = __phys_to_pfn(PKUNITY_UNIGFX_MMAP_BASE);
map.virtual = KUSER_UNIGFX_BASE;
map.length = PKUNITY_UNIGFX_MMAP_SIZE;
map.type = MT_KUSER;
create_mapping(&map);
#endif
/*
* Create a mapping for the machine vectors at the high-vectors
* location (0xffff0000). If we aren't using high-vectors, also

28
drivers/video/fb-puv3.c
View File

@ -13,7 +13,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/fb.h>
@ -531,7 +530,7 @@ static int unifb_set_par(struct fb_info *info)
return -EINVAL;
}
writel(PKUNITY_UNIGFX_MMAP_BASE, UDE_FSA);
writel(info->fix.smem_start, UDE_FSA);
writel(info->var.yres, UDE_LS);
writel(get_line_length(info->var.xres,
info->var.bits_per_pixel) >> 3, UDE_PS);
@ -680,13 +679,27 @@ static int unifb_probe(struct platform_device *dev)
struct fb_info *info;
u32 unifb_regs[UNIFB_REGS_NUM];
int retval = -ENOMEM;
struct resource *iomem, *mapmem;
struct resource *iomem;
void *videomemory;
videomemory = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP,
get_order(UNIFB_MEMSIZE));
if (!videomemory)
goto err;
memset(videomemory, 0, UNIFB_MEMSIZE);
unifb_fix.smem_start = virt_to_phys(videomemory);
unifb_fix.smem_len = UNIFB_MEMSIZE;
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
unifb_fix.mmio_start = iomem->start;
info = framebuffer_alloc(sizeof(u32)*256, &dev->dev);
if (!info)
goto err;
info->screen_base = (char __iomem *)KUSER_UNIGFX_BASE;
info->screen_base = (char __iomem *)videomemory;
info->fbops = &unifb_ops;
retval = fb_find_mode(&info->var, info, NULL,
@ -695,13 +708,6 @@ static int unifb_probe(struct platform_device *dev)
if (!retval || (retval == 4))
info->var = unifb_default;
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
unifb_fix.mmio_start = iomem->start;
mapmem = platform_get_resource(dev, IORESOURCE_MEM, 1);
unifb_fix.smem_start = mapmem->start;
unifb_fix.smem_len = UNIFB_MEMSIZE;
info->fix = unifb_fix;
info->pseudo_palette = info->par;
info->par = NULL;