/*
 * Copyright (C) 2012-2015 - ARM Ltd
 * Author: Marc Zyngier <marc.zyngier@arm.com>
 *
 * 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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <clocksource/arm_arch_timer.h>
#include <linux/compiler.h>
#include <linux/kvm_host.h>

#include <asm/kvm_hyp.h>

/* vcpu is already in the HYP VA space */
void __hyp_text __timer_save_state(struct kvm_vcpu *vcpu)
{
	struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
	u64 val;

	if (timer->enabled) {
		timer->cntv_ctl = read_sysreg_el0(cntv_ctl);
		timer->cntv_cval = read_sysreg_el0(cntv_cval);
	}

	/* Disable the virtual timer */
	write_sysreg_el0(0, cntv_ctl);

	/*
	 * We don't need to do this for VHE since the host kernel runs in EL2
	 * with HCR_EL2.TGE ==1, which makes those bits have no impact.
	 */
	if (!has_vhe()) {
		/* Allow physical timer/counter access for the host */
		val = read_sysreg(cnthctl_el2);
		val |= CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN;
		write_sysreg(val, cnthctl_el2);
	}

	/* Clear cntvoff for the host */
	write_sysreg(0, cntvoff_el2);
}

void __hyp_text __timer_restore_state(struct kvm_vcpu *vcpu)
{
	struct kvm *kvm = kern_hyp_va(vcpu->kvm);
	struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
	u64 val;

	/* Those bits are already configured at boot on VHE-system */
	if (!has_vhe()) {
		/*
		 * Disallow physical timer access for the guest
		 * Physical counter access is allowed
		 */
		val = read_sysreg(cnthctl_el2);
		val &= ~CNTHCTL_EL1PCEN;
		val |= CNTHCTL_EL1PCTEN;
		write_sysreg(val, cnthctl_el2);
	}

	if (timer->enabled) {
		write_sysreg(kvm->arch.timer.cntvoff, cntvoff_el2);
		write_sysreg_el0(timer->cntv_cval, cntv_cval);
		isb();
		write_sysreg_el0(timer->cntv_ctl, cntv_ctl);
	}
}
t/rxrpc/call_object.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=d07830db1bdb254e4b50d366010b219286b8c937'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=d07830db1bdb254e4b50d366010b219286b8c937'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rxrpc?id=d07830db1bdb254e4b50d366010b219286b8c937'>rxrpc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rxrpc/call_object.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>call_object.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='d07830db1bdb254e4b50d366010b219286b8c937'/><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>Marcel J.E. Mol &lt;marcel@mesa.nl&gt;</td><td class='right'>2017-01-30 19:26:40 +0100</td></tr>
<tr><th>committer</th><td>Johan Hovold &lt;johan@kernel.org&gt;</td><td class='right'>2017-01-31 17:27:04 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rxrpc/call_object.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>d07830db1bdb254e4b50d366010b219286b8c937</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rxrpc/call_object.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=d07830db1bdb254e4b50d366010b219286b8c937'>354d7fca237fa3d7e7e63c2196eaa4e1086838ea</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rxrpc/call_object.c?id=d07830db1bdb254e4b50d366010b219286b8c937'>net/rxrpc/call_object.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rxrpc/call_object.c?id=5d03a2fd2292e71936c4235885c35ccc3c94695b'>5d03a2fd2292e71936c4235885c35ccc3c94695b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rxrpc/call_object.c?id=d07830db1bdb254e4b50d366010b219286b8c937&amp;id2=5d03a2fd2292e71936c4235885c35ccc3c94695b'>diff</a>)</td></tr></table>
<div class='commit-subject'>USB: serial: pl2303: add ATEN device ID</div><div class='commit-msg'>Seems that ATEN serial-to-usb devices using pl2303 exist with
different device ids. This patch adds a missing device ID so it
is recognised by the driver.

Signed-off-by: Marcel J.E. Mol &lt;marcel@mesa.nl&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=d07830db1bdb254e4b50d366010b219286b8c937'>Diffstat</a> (limited to 'net/rxrpc/call_object.c')</div><table summary='diffstat' class='diffstat'>