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

    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;
	}
}

<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=751321b3dd5040dc5be19bd23f985e80c914621a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=751321b3dd5040dc5be19bd23f985e80c914621a'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci?id=751321b3dd5040dc5be19bd23f985e80c914621a'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/echoaudio?id=751321b3dd5040dc5be19bd23f985e80c914621a'>echoaudio</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>gina24_dsp.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='751321b3dd5040dc5be19bd23f985e80c914621a'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 13:18:12 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 13:18:12 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>751321b3dd5040dc5be19bd23f985e80c914621a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=751321b3dd5040dc5be19bd23f985e80c914621a'>967928e24b38dc7fed918f932bb1b243af42bf7f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>sound/pci/echoaudio/gina24_dsp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/echoaudio/gina24_dsp.c?id=566cf877a1fcb6d6dc0126b076aad062054c2637'>566cf877a1fcb6d6dc0126b076aad062054c2637</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a&amp;id2=566cf877a1fcb6d6dc0126b076aad062054c2637'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/echoaudio/gina24_dsp.c?id=586655d278ba08af7b198b93217746f9a506ee8a'>586655d278ba08af7b198b93217746f9a506ee8a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/echoaudio/gina24_dsp.c?id=751321b3dd5040dc5be19bd23f985e80c914621a&amp;id2=586655d278ba08af7b198b93217746f9a506ee8a'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'rtc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux</div><div class='commit-msg'>Pull RTC fix from Alexandre Belloni:
 "A single fix for this cycle. It is worth taking it for 4.10 so that
  distributions will not have CONFIG_RTC_DRV_JZ4740 switching from m to
  y in their config.

  Summary:
   - Allow jz4740 to build as a module again by using kernel_halt()"

* tag 'rtc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: jz4740: make the driver buildable as a module again
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=751321b3dd5040dc5be19bd23f985e80c914621a'>Diffstat</a> (limited to 'sound/pci/echoaudio/gina24_dsp.c')</div><table summary='diffstat' class='diffstat'>