/*
 * Provide common bits of early_ioremap() support for architectures needing
 * temporary mappings during boot before ioremap() is available.
 *
 * This is mostly a direct copy of the x86 early_ioremap implementation.
 *
 * (C) Copyright 1995 1996, 2014 Linus Torvalds
 *
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <asm/fixmap.h>
#include <asm/early_ioremap.h>

#ifdef CONFIG_MMU
static int early_ioremap_debug __initdata;

static int __init early_ioremap_debug_setup(char *str)
{
	early_ioremap_debug = 1;

	return 0;
}
early_param("early_ioremap_debug", early_ioremap_debug_setup);

static int after_paging_init __initdata;

void __init __weak early_ioremap_shutdown(void)
{
}

void __init early_ioremap_reset(void)
{
	early_ioremap_shutdown();
	after_paging_init = 1;
}

/*
 * Generally, ioremap() is available after paging_init() has been called.
 * Architectures wanting to allow early_ioremap after paging_init() can
 * define __late_set_fixmap and __late_clear_fixmap to do the right thing.
 */
#ifndef __late_set_fixmap
static inline void __init __late_set_fixmap(enum fixed_addresses idx,
					    phys_addr_t phys, pgprot_t prot)
{
	BUG();
}
#endif

#ifndef __late_clear_fixmap
static inline void __init __late_clear_fixmap(enum fixed_addresses idx)
{
	BUG();
}
#endif

static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;

void __init early_ioremap_setup(void)
{
	int i;

	for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
		if (WARN_ON(prev_map[i]))
			break;

	for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
		slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
}

static int __init check_early_ioremap_leak(void)
{
	int count = 0;
	int i;

	for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
		if (prev_map[i])
			count++;

	if (WARN(count, KERN_WARNING
		 "Debug warning: early ioremap leak of %d areas detected.\n"
		 "please boot with early_ioremap_debug and report the dmesg.\n",
		 count))
		return 1;
	return 0;
}
late_initcall(check_early_ioremap_leak);

static void __init __iomem *
__early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
{
	unsigned long offset;
	resource_size_t last_addr;
	unsigned int nrpages;
	enum fixed_addresses idx;
	int i, slot;

	WARN_ON(system_state != SYSTEM_BOOTING);

	slot = -1;
	for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
		if (!prev_map[i]) {
			slot = i;
			break;
		}
	}

	if (WARN(slot < 0, "%s(%08llx, %08lx) not found slot\n",
		 __func__, (u64)phys_addr, size))
		return NULL;

	/* Don't allow wraparound or zero size */
	last_addr = phys_addr + size - 1;
	if (WARN_ON(!size || last_addr < phys_addr))
		return NULL;

	prev_size[slot] = size;
	/*
	 * Mappings have to be page-aligned
	 */
	offset = offset_in_page(phys_addr);
	phys_addr &= PAGE_MASK;
	size = PAGE_ALIGN(last_addr + 1) - phys_addr;

	/*
	 * Mappings have to fit in the FIX_BTMAP area.
	 */
	nrpages = size >> PAGE_SHIFT;
	if (WARN_ON(nrpages > NR_FIX_BTMAPS))
		return NULL;

	/*
	 * Ok, go for it..
	 */
	idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
	while (nrpages > 0) {
		if (after_paging_init)
			__late_set_fixmap(idx, phys_addr, prot);
		else
			__early_set_fixmap(idx, phys_addr, prot);
		phys_addr += PAGE_SIZE;
		--idx;
		--nrpages;
	}
	WARN(early_ioremap_debug, "%s(%08llx, %08lx) [%d] => %08lx + %08lx\n",
	     __func__, (u64)phys_addr, size, slot, offset, slot_virt[slot]);

	prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]);
	return prev_map[slot];
}

void __init early_iounmap(void __iomem *addr, unsigned long size)
{
	unsigned long virt_addr;
	unsigned long offset;
	unsigned int nrpages;
	enum fixed_addresses idx;
	int i, slot;

	slot = -1;
	for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
		if (prev_map[i] == addr) {
			slot = i;
			break;
		}
	}

	if (WARN(slot < 0, "early_iounmap(%p, %08lx) not found slot\n",
		 addr, size))
		return;

	if (WARN(prev_size[slot] != size,
		 "early_iounmap(%p, %08lx) [%d] size not consistent %08lx\n",
		 addr, size, slot, prev_size[slot]))
		return;

	WARN(early_ioremap_debug, "early_iounmap(%p, %08lx) [%d]\n",
	     addr, size, slot);

	virt_addr = (unsigned long)addr;
	if (WARN_ON(virt_addr < fix_to_virt(FIX_BTMAP_BEGIN)))
		return;

	offset = offset_in_page(virt_addr);
	nrpages = PAGE_ALIGN(offset + size) >> PAGE_SHIFT;

	idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
	while (nrpages > 0) {
		if (after_paging_init)
			__late_clear_fixmap(idx);
		else
			__early_set_fixmap(idx, 0, FIXMAP_PAGE_CLEAR);
		--idx;
		--nrpages;
	}
	prev_map[slot] = NULL;
}

/* Remap an IO device */
void __init __iomem *
early_ioremap(resource_size_t phys_addr, unsigned long size)
{
	return __early_ioremap(phys_addr, size, FIXMAP_PAGE_IO);
}

/* Remap memory */
void __init *
early_memremap(resource_size_t phys_addr, unsigned long size)
{
	return (__force void *)__early_ioremap(phys_addr, size,
					       FIXMAP_PAGE_NORMAL);
}
#ifdef FIXMAP_PAGE_RO
void __init *
early_memremap_ro(resource_size_t phys_addr, unsigned long size)
{
	return (__force void *)__early_ioremap(phys_addr, size, FIXMAP_PAGE_RO);
}
#endif

#define MAX_MAP_CHUNK	(NR_FIX_BTMAPS << PAGE_SHIFT)

void __init copy_from_early_mem(void *dest, phys_addr_t src, unsigned long size)
{
	unsigned long slop, clen;
	char *p;

	while (size) {
		slop = offset_in_page(src);
		clen = size;
		if (clen > MAX_MAP_CHUNK - slop)
			clen = MAX_MAP_CHUNK - slop;
		p = early_memremap(src & PAGE_MASK, clen + slop);
		memcpy(dest, p + slop, clen);
		early_memunmap(p, clen + slop);
		dest += clen;
		src += clen;
		size -= clen;
	}
}

#else /* CONFIG_MMU */

void __init __iomem *
early_ioremap(resource_size_t phys_addr, unsigned long size)
{
	return (__force void __iomem *)phys_addr;
}

/* Remap memory */
void __init *
early_memremap(resource_size_t phys_addr, unsigned long size)
{
	return (void *)phys_addr;
}
void __init *
early_memremap_ro(resource_size_t phys_addr, unsigned long size)
{
	return (void *)phys_addr;
}

void __init early_iounmap(void __iomem *addr, unsigned long size)
{
}

#endif /* CONFIG_MMU */


void __init early_memunmap(void *addr, unsigned long size)
{
	early_iounmap((__force void __iomem *)addr, size);
}
-next.git/diff/drivers/usb/wusbcore/Makefile?id=6d04dfc8966019b8b0977b2cb942351f13d2b178&amp;id2=06425c308b92eaf60767bc71d359f4cbc7a561f8'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>Pull networking fixes from David Miller:

 1) Fix handling of interrupt status in stmmac driver. Just because we
    have masked the event from generating interrupts, doesn't mean the
    bit won't still be set in the interrupt status register. From Alexey
    Brodkin.

 2) Fix DMA API debugging splats in gianfar driver, from Arseny Solokha.

 3) Fix off-by-one error in __ip6_append_data(), from Vlad Yasevich.

 4) cls_flow does not match on icmpv6 codes properly, from Simon Horman.

 5) Initial MAC address can be set incorrectly in some scenerios, from
    Ivan Vecera.

 6) Packet header pointer arithmetic fix in ip6_tnl_parse_tlv_end_lim(),
    from Dan Carpenter.

 7) Fix divide by zero in __tcp_select_window(), from Eric Dumazet.

 8) Fix crash in iwlwifi when unregistering thermal zone, from Jens
    Axboe.

 9) Check for DMA mapping errors in starfire driver, from Alexey
    Khoroshilov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits)
  tcp: fix 0 divide in __tcp_select_window()
  ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
  net: fix ndo_features_check/ndo_fix_features comment ordering
  net/sched: matchall: Fix configuration race
  be2net: fix initial MAC setting
  ipv6: fix flow labels when the traffic class is non-0
  net: thunderx: avoid dereferencing xcv when NULL
  net/sched: cls_flower: Correct matching on ICMPv6 code
  ipv6: Paritially checksum full MTU frames
  net/mlx4_core: Avoid command timeouts during VF driver device shutdown
  gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page
  net: ethtool: add support for 2500BaseT and 5000BaseT link modes
  can: bcm: fix hrtimer/tasklet termination in bcm op removal
  net: adaptec: starfire: add checks for dma mapping errors
  net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause
  can: Fix kernel panic at security_sock_rcv_skb
  net: macb: Fix 64 bit addressing support for GEM
  stmmac: Discard masked flags in interrupt status register
  net/mlx5e: Check ets capability before ets query FW command
  net/mlx5e: Fix update of hash function/key via ethtool
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=6d04dfc8966019b8b0977b2cb942351f13d2b178'>Diffstat</a> (limited to 'drivers/usb/wusbcore/Makefile')</div><table summary='diffstat' class='diffstat'>