mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-23 19:49:43 +00:00
4b3cfe72d9
Some functions previously used only by vGICv2 are useful also for vGICv3 implementation. Untie them from GICState and make accessible from within other modules: - kvm_arm_gic_set_irq() - kvm_gic_supports_attr() - moved to common code and renamed to kvm_device_check_attr() - kvm_gic_access() - turned into GIC-independent kvm_device_access(). Data pointer changed to void * because some GICv3 registers are 64-bit wide Some of these changes are not used right now, but they will be helpful for implementing live migration. Actually kvm_dist_get() and kvm_dist_put() could also be made reusable, but they would require two extra parameters (s->dev_fd and s->num_cpu) as well as lots of typecasts of 's' to DeviceState * and back to GICState *. This makes the code very ugly so i decided to stop at this point. I tried also an approach with making a base class for all possible GICs, but it would contain only three variables (dev_fd, cpu_num and irq_num), and accessing them through the rest of the code would be again tedious (either ugly casts or qemu-style separate object pointer). So i disliked it too. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Tested-by: Ashok kumar <ashoks@broadcom.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 2ef56d1dd64ffb75ed02a10dcdaf605e5b8ff4f8.1441784344.git.p.fedin@samsung.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/*
|
|
* ARM KVM vGIC utility functions
|
|
*
|
|
* Copyright (c) 2015 Samsung Electronics
|
|
* Written by Pavel Fedin
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#ifndef QEMU_ARM_VGIC_COMMON_H
|
|
#define QEMU_ARM_VGIC_COMMON_H
|
|
|
|
/**
|
|
* kvm_arm_gic_set_irq - Send an IRQ to the in-kernel vGIC
|
|
* @num_irq: Total number of IRQs configured for the GIC instance
|
|
* @irq: qemu internal IRQ line number:
|
|
* [0..N-1] : external interrupts
|
|
* [N..N+31] : PPI (internal) interrupts for CPU 0
|
|
* [N+32..N+63] : PPI (internal interrupts for CPU 1
|
|
* @level: level of the IRQ line.
|
|
*/
|
|
void kvm_arm_gic_set_irq(uint32_t num_irq, int irq, int level);
|
|
|
|
#endif
|