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

* '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

arch/unicore32/Makefile

@@ -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

arch/unicore32/include/asm/futex.h

-/*
- * 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__ */

arch/unicore32/include/mach/PKUnity.h

@@ -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

arch/unicore32/include/mach/memory.h

@@ -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))

arch/unicore32/kernel/puv3-core.c

@@ -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[] = {

arch/unicore32/kernel/rtc.c

@@ -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,

arch/unicore32/kernel/setup.c

@@ -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;

arch/unicore32/kernel/traps.c

@@ -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>
 

arch/unicore32/kernel/vmlinux.lds.S

@@ -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)

arch/unicore32/mm/mmu.c

@@ -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

drivers/video/fb-puv3.c

@@ -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;