/******************************************************************************

    AudioScience HPI driver
    Copyright (C) 1997-2012  AudioScience Inc. <support@audioscience.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of version 2 of the GNU General Public License as
    published by the Free Software Foundation;

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

HPI Operating System function implementation for Linux

(C) Copyright AudioScience Inc. 1997-2003
******************************************************************************/
#define SOURCEFILE_NAME "hpios.c"
#include "hpi_internal.h"
#include "hpidebug.h"
#include <linux/delay.h>
#include <linux/sched.h>

void hpios_delay_micro_seconds(u32 num_micro_sec)
{
	if ((usecs_to_jiffies(num_micro_sec) > 1) && !in_interrupt()) {
		/* MUST NOT SCHEDULE IN INTERRUPT CONTEXT! */
		schedule_timeout_uninterruptible(usecs_to_jiffies
			(num_micro_sec));
	} else if (num_micro_sec <= 2000)
		udelay(num_micro_sec);
	else
		mdelay(num_micro_sec / 1000);

}

/** Allocate an area of locked memory for bus master DMA operations.

If allocation fails, return 1, and *pMemArea.size = 0
*/
u16 hpios_locked_mem_alloc(struct consistent_dma_area *p_mem_area, u32 size,
	struct pci_dev *pdev)
{
	/*?? any benefit in using managed dmam_alloc_coherent? */
	p_mem_area->vaddr =
		dma_alloc_coherent(&pdev->dev, size, &p_mem_area->dma_handle,
		GFP_DMA32 | GFP_KERNEL);

	if (p_mem_area->vaddr) {
		HPI_DEBUG_LOG(DEBUG, "allocated %d bytes, dma 0x%x vma %p\n",
			size, (unsigned int)p_mem_area->dma_handle,
			p_mem_area->vaddr);
		p_mem_area->pdev = &pdev->dev;
		p_mem_area->size = size;
		return 0;
	} else {
		HPI_DEBUG_LOG(WARNING,
			"failed to allocate %d bytes locked memory\n", size);
		p_mem_area->size = 0;
		return 1;
	}
}

u16 hpios_locked_mem_free(struct consistent_dma_area *p_mem_area)
{
	if (p_mem_area->size) {
		dma_free_coherent(p_mem_area->pdev, p_mem_area->size,
			p_mem_area->vaddr, p_mem_area->dma_handle);
		HPI_DEBUG_LOG(DEBUG, "freed %lu bytes, dma 0x%x vma %p\n",
			(unsigned long)p_mem_area->size,
			(unsigned int)p_mem_area->dma_handle,
			p_mem_area->vaddr);
		p_mem_area->size = 0;
		return 0;
	} else {
		return 1;
	}
}
rch'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>6lowpan</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>nhc_ghc_ext_route.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3efa70d78f218e4c9276b0bac0545e5184c1c47b'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>3efa70d78f218e4c9276b0bac0545e5184c1c47b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>f4abe2f05e173023d2a262afd4aebb1e89fe6985</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>net/6lowpan/nhc_ghc_ext_route.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_ext_route.c?id=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>76e0e70e6452b971a69cc9794ff4a6715c11f7f2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/6lowpan/nhc_ghc_ext_route.c?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>926af6273fc683cd98cd0ce7bf0d04a02eed6742</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/6lowpan/nhc_ghc_ext_route.c?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>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'>The conflict was an interaction between a bug fix in the
netvsc driver in 'net' and an optimization of the RX path
in 'net-next'.

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Diffstat</a> (limited to 'net/6lowpan/nhc_ghc_ext_route.c')</div><table summary='diffstat' class='diffstat'>