linux-kernel - [RFC PATCH 15/33] irqchip/gic-v4: Add management structure definitions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1484648454-21216-16-git-send-email-marc.zyngier@arm.com>
Date:   Tue, 17 Jan 2017 10:20:36 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu
Cc:     Christoffer Dall <christoffer.dall@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Eric Auger <eric.auger@...hat.com>
Subject: [RFC PATCH 15/33] irqchip/gic-v4: Add management structure definitions

Add a bunch of GICv4-specific data structures that will get used in
subsequent patches.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 include/linux/irqchip/arm-gic-v4.h | 92 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 include/linux/irqchip/arm-gic-v4.h

diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h
new file mode 100644
index 0000000..6e9c2b3
--- /dev/null
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2016 ARM Limited, All Rights Reserved.
+ * Author: Marc Zyngier <marc.zyngier@....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/>.
+ */
+
+#ifndef __LINUX_IRQCHIP_ARM_GIC_V4_H
+#define __LINUX_IRQCHIP_ARM_GIC_V4_H
+
+/* Embedded in kvm.arch */
+struct its_vm {
+	struct irq_domain	*domain;
+	struct page		*vprop_page;
+	irq_hw_number_t		db_lpi_base;
+	unsigned long		*db_bitmap;
+	int			nr_db_lpis;
+};
+
+/* Embedded in kvm_vcpu.arch */
+struct its_vpe {
+	struct page 		*vpt_page;
+	struct its_vm		*its_vm;
+	irq_hw_number_t		vpe_db_lpi;
+	u16			col_idx;
+	u16			vpe_id;
+	bool			idai;
+	bool			pending_last;
+};
+
+/*
+ * struct its_vlpi: structure describing a VLPI. Only to be
+ * interpreted in the context of a physical interrupt it complements.
+ *
+ * @vintid:	Virtual LPI number
+ * @db_enabled:	Is the VPE doorbell to be generated?
+ * @vpe_idx:	Index (0-based) of the VPE in this VM. Not the vpe_id!
+ */
+struct its_vlpi {
+	u32			vintid;
+	bool			db_enabled;
+	u16			vpe_idx;
+};
+
+/*
+ * struct its_vlpi_map: structure describing the mappings of all vlpis
+ * for a single device. To be used as the vcpu_info passed to
+ * irq_set_vcpu_affinity().
+ *
+ * @vpes: Array of struct its_vpe, describing the GICv4 view of the
+ * 	  vpus.
+ * @vlpis: Array of struct vlpi, each one matching one the
+ *	   corresponding LPI
+ * @nr_vpes: Size of the @vpes array
+ * @nr_vlpis: Size of the @vlpis array
+ */
+struct its_vlpi_map {
+	/* nr_vpes  */
+	struct its_vpe		**vpes;
+	struct its_vlpi		*vlpis;
+	int			nr_vpes;
+	int			nr_vlpis;
+};
+
+enum its_cmd_type {
+	MAP_VLPI,
+	UNMAP_VLPI,
+	PROP_UPDATE_VLPI,
+	SCHEDULE_VPE,
+	DESCHEDULE_VPE,
+	INVALL_VPE,
+};
+
+struct its_cmd_info {
+	enum its_cmd_type		cmd_type;
+	union {
+		struct its_vlpi_map	*map;
+		u8			config;
+	};
+};
+
+#endif
-- 
2.1.4