From: vijay.kilari@gmail.com
To: Ian.Campbell@citrix.com, julien.grall@citrix.com,
stefano.stabellini@eu.citrix.com, stefano.stabellini@citrix.com,
tim@xen.org, xen-devel@lists.xen.org
Cc: Prasun.Kapoor@caviumnetworks.com,
Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>,
manish.jaggi@caviumnetworks.com, vijay.kilari@gmail.com
Subject: [PATCH v6 17/31] xen/arm: ITS: Store LPIs allocated and IRQ ID bits per domain
Date: Mon, 31 Aug 2015 16:36:34 +0530 [thread overview]
Message-ID: <1441019208-2764-18-git-send-email-vijay.kilari@gmail.com> (raw)
In-Reply-To: <1441019208-2764-1-git-send-email-vijay.kilari@gmail.com>
From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
Store number of lpis and number of id bits
in vgic structure
Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
---
xen/arch/arm/irq.c | 9 +++++++++
xen/arch/arm/vgic-v3-its.c | 2 ++
xen/arch/arm/vgic.c | 12 ++++++++++++
xen/include/asm-arm/domain.h | 3 +++
xen/include/asm-arm/irq.h | 3 +++
5 files changed, 29 insertions(+)
diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 24c4f24..93e9411 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -31,6 +31,15 @@
static unsigned int local_irqs_type[NR_LOCAL_IRQS];
static DEFINE_SPINLOCK(local_irqs_type_lock);
+/* Number of LPI supported in XEN */
+/*
+ * LPI number start from 8192. Minimum number of bits
+ * required to represent 8192 is 13 bits. So to Support LPIs minimum
+ * 14 bits are required which can represent maximum LPI 16384.
+ * 16384 - 8192 = 8192. Minimum number of LPIs supported is 8192
+ */
+unsigned int nr_lpis = 8192;
+
/* Describe an IRQ assigned to a guest */
struct irq_guest
{
diff --git a/xen/arch/arm/vgic-v3-its.c b/xen/arch/arm/vgic-v3-its.c
index fabbad0..cef6139 100644
--- a/xen/arch/arm/vgic-v3-its.c
+++ b/xen/arch/arm/vgic-v3-its.c
@@ -547,6 +547,8 @@ int vits_domain_init(struct domain *d)
ASSERT(is_hardware_domain(d));
+ d->arch.vgic.nr_lpis = nr_lpis;
+
d->arch.vgic.vits = xzalloc(struct vgic_its);
if ( !d->arch.vgic.vits )
return -ENOMEM;
diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index e28c30d..6b6bbce 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -72,8 +72,10 @@ int domain_vgic_init(struct domain *d, unsigned int nr_spis)
{
int i;
int ret;
+ unsigned int irq_lines;
d->arch.vgic.ctlr = 0;
+ d->arch.vgic.nr_lpis = 0;
/* Limit the number of virtual SPIs supported to (1020 - 32) = 988 */
if ( nr_spis > (1020 - NR_LOCAL_IRQS) )
@@ -130,6 +132,16 @@ int domain_vgic_init(struct domain *d, unsigned int nr_spis)
for ( i = 0; i < NR_GIC_SGI; i++ )
set_bit(i, d->arch.vgic.allocated_irqs);
+ irq_lines = d->arch.vgic.nr_spis + 32;
+ /*
+ * If LPIs are supported, then just overwrite nr_spis
+ * in computing id_bits.
+ */
+ if ( d->arch.vgic.nr_lpis != 0 )
+ irq_lines = d->arch.vgic.nr_lpis + FIRST_GIC_LPI;
+
+ d->arch.vgic.id_bits = get_count_order(irq_lines);
+
return 0;
}
diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h
index 986a4d6..269e4bb 100644
--- a/xen/include/asm-arm/domain.h
+++ b/xen/include/asm-arm/domain.h
@@ -93,6 +93,9 @@ struct arch_domain
spinlock_t lock;
int ctlr;
int nr_spis; /* Number of SPIs */
+ int nr_lpis; /* Number of LPIs */
+ /* Number of bits required to represent IRQs(SPIs+LPIs) */
+ int id_bits;
unsigned long *allocated_irqs; /* bitmap of IRQs allocated */
struct vgic_irq_rank *shared_irqs;
/*
diff --git a/xen/include/asm-arm/irq.h b/xen/include/asm-arm/irq.h
index bddd1ea..ff37234 100644
--- a/xen/include/asm-arm/irq.h
+++ b/xen/include/asm-arm/irq.h
@@ -33,6 +33,9 @@ struct msi_desc {
#define nr_static_irqs NR_LINE_IRQS
#define arch_hwdom_irqs(domid) NR_LINE_IRQS
+/* Number of LPI supported */
+extern unsigned int nr_lpis;
+
struct irq_desc;
struct irqaction;
--
1.7.9.5
next prev parent reply other threads:[~2015-08-31 11:06 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-31 11:06 [PATCH v6 00/31] Add ITS support vijay.kilari
2015-08-31 11:06 ` [PATCH v6 01/31] xen/dt: Handle correctly node with interrupt-map in dt_for_each_irq_map vijay.kilari
2015-08-31 14:20 ` Julien Grall
2015-09-02 15:28 ` Ian Campbell
2015-09-02 15:30 ` Wei Liu
2015-09-02 15:45 ` Julien Grall
2015-09-02 15:52 ` Ian Campbell
2015-09-04 14:41 ` Ian Campbell
2015-08-31 11:06 ` [PATCH v6 02/31] xen/arm: Add bitmap_find_next_zero_area helper function vijay.kilari
2015-08-31 11:06 ` [PATCH v6 03/31] xen: Add log2 functionality vijay.kilari
2015-08-31 11:21 ` Jan Beulich
2015-08-31 11:06 ` [PATCH v6 04/31] xen/arm: Set nr_cpu_ids to available number of cpus vijay.kilari
2015-08-31 14:25 ` Julien Grall
2015-09-09 12:48 ` Ian Campbell
2015-08-31 11:06 ` [PATCH v6 05/31] xen/arm: Rename NR_IRQs and vgic_num_irqs helper function vijay.kilari
2015-08-31 14:40 ` Julien Grall
2015-09-09 13:08 ` Ian Campbell
2015-09-09 13:23 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 06/31] xen/arm: ITS: Port ITS driver to Xen vijay.kilari
2015-08-31 15:41 ` Julien Grall
2015-09-03 17:02 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 07/31] xen/arm: ITS: Add helper functions to manage its_devices vijay.kilari
2015-08-31 11:06 ` [PATCH v6 08/31] xen/arm: ITS: Introduce msi_desc for LPIs vijay.kilari
2015-08-31 16:20 ` Julien Grall
2015-09-09 13:16 ` Ian Campbell
2015-09-09 13:28 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 09/31] xen/arm: ITS: Add APIs to add and assign device vijay.kilari
2015-09-03 17:34 ` Julien Grall
2015-09-09 13:28 ` Ian Campbell
2015-09-09 13:44 ` Julien Grall
2015-09-09 15:07 ` Ian Campbell
2015-09-09 16:19 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 10/31] xen/arm: ITS: Introduce gic_is_lpi helper function vijay.kilari
2015-08-31 16:49 ` Julien Grall
2015-09-01 9:02 ` Vijay Kilari
2015-09-01 11:40 ` Julien Grall
2015-09-01 11:56 ` Vijay Kilari
2015-09-01 13:02 ` Julien Grall
2015-09-03 6:32 ` Vijay Kilari
2015-09-03 9:48 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 11/31] xen/arm: ITS: Enable compilation of physical ITS driver vijay.kilari
2015-08-31 11:06 ` [PATCH v6 12/31] xen/arm: Move vgic locking inside get_irq_priority callback vijay.kilari
2015-08-31 16:34 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 13/31] xen/arm: ITS: implement hw_irq_controller for LPIs vijay.kilari
2015-08-31 17:53 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 14/31] xen/arm: ITS: Initialize physical ITS and export lpi support vijay.kilari
2015-08-31 18:35 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 15/31] xen/arm: ITS: Add virtual ITS driver vijay.kilari
2015-09-02 17:20 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 16/31] xen/arm: ITS: Add virtual ITS commands support vijay.kilari
2015-09-03 15:07 ` Julien Grall
2015-08-31 11:06 ` vijay.kilari [this message]
2015-09-03 16:25 ` [PATCH v6 17/31] xen/arm: ITS: Store LPIs allocated and IRQ ID bits per domain Julien Grall
2015-09-07 6:59 ` Vijay Kilari
2015-09-07 10:56 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 18/31] xen/arm: ITS: Enable virtual ITS driver vijay.kilari
2015-08-31 11:06 ` [PATCH v6 19/31] xen/arm: ITS: Export ITS info to Virtual ITS vijay.kilari
2015-09-03 16:48 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 20/31] xen/arm: ITS: Introduce helper to get number of event IDs vijay.kilari
2015-09-03 17:51 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 21/31] xen/arm: ITS: Add GITS registers emulation vijay.kilari
2015-09-07 13:14 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 22/31] xen/arm: ITS: Add virtual ITS availability check helper vijay.kilari
2015-09-07 13:41 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 23/31] xen/arm: ITS: Add 32-bit access to GICR_TYPER vijay.kilari
2015-08-31 16:06 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 24/31] xen/arm: ITS: Add GICR register emulation vijay.kilari
2015-09-07 14:20 ` Julien Grall
2015-09-07 15:26 ` Vijay Kilari
2015-09-09 13:55 ` Ian Campbell
2015-09-09 16:11 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 25/31] xen/arm: ITS: Allocate irq descriptors for LPIs vijay.kilari
2015-08-31 11:06 ` [PATCH v6 26/31] xen/arm: ITS: Allocate pending_lpi " vijay.kilari
2015-08-31 11:06 ` [PATCH v6 27/31] xen/arm: ITS: Route LPIs vijay.kilari
2015-08-31 11:06 ` [PATCH v6 28/31] xen/arm: ITS: Add domain specific ITS initialization vijay.kilari
2015-08-31 11:06 ` [PATCH v6 29/31] xen/arm: ITS: Map ITS translation space vijay.kilari
2015-08-31 19:07 ` Julien Grall
2015-08-31 11:06 ` [PATCH v6 30/31] xen/arm: ITS: Generate ITS node for Dom0 vijay.kilari
2015-08-31 11:06 ` [PATCH v6 31/31] xen/arm: ITS: Add pci devices in ThunderX vijay.kilari
2015-09-09 15:22 ` Ian Campbell
2015-09-02 15:38 ` [PATCH v6 00/31] Add ITS support Ian Campbell
2015-09-02 15:52 ` Ian Campbell
2015-09-03 16:45 ` Julien Grall
2015-09-09 15:29 ` Ian Campbell
2015-09-14 11:00 ` Vijay Kilari
2015-09-14 11:09 ` Julien Grall
2015-09-14 13:04 ` Vijay Kilari
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