All of lore.kernel.org
 help / color / mirror / Atom feed
From: Joerg Roedel <joerg.roedel@amd.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: <iommu@lists.linux-foundation.org>,
	<linux-kernel@vger.kernel.org>, <x86@kernel.org>,
	Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq remapping information
Date: Thu, 12 Jul 2012 17:40:31 +0200	[thread overview]
Message-ID: <20120712154031.GA4213@amd.com> (raw)
In-Reply-To: <CAE9FiQUEYVMi46WYfLDDUO=PuTHYbmqXreZnCWLRdUjBH2iH4Q@mail.gmail.com>

On Wed, Jul 11, 2012 at 02:42:03PM -0700, Yinghai Lu wrote:
> >  #ifdef CONFIG_IRQ_REMAP
> > -       struct irq_2_iommu      irq_2_iommu;
> > +       union irq_remap_info    irq_remap_info;
> 
> how about
> +union {
> +       struct irq_2_iommu irq_2_iommu;
> +       struct irq_2_irte  irq_2_irte;
> +};
> 
> instead?

Yes, that is better. I updated the patch (and 4-5 more patches in the
series to adapt them to this data structure change). I will update the
branch on my tree today and push the version with this change included.
Here is the new patch:

>From a0fd5f10f015629592adc28cb9b79d61d0ba1bfb Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 19 Jun 2012 16:07:45 +0200
Subject: [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq
 remapping information

Add a data structure to store information the IOMMU driver
can use to get from a 'struct irq_cfg' to the remapping
entry.

Cc: x86@kernel.org
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
 arch/x86/include/asm/hw_irq.h |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index eb92a6e..fc89a2a 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -101,6 +101,7 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
 	irq_attr->polarity	= polarity;
 }
 
+/* Intel specific interrupt remapping information */
 struct irq_2_iommu {
 	struct intel_iommu *iommu;
 	u16 irte_index;
@@ -108,6 +109,12 @@ struct irq_2_iommu {
 	u8  irte_mask;
 };
 
+/* AMD specific interrupt remapping information */
+struct irq_2_irte {
+	u16 devid; /* Device ID for IRTE table */
+	u16 index; /* Index into IRTE table*/
+};
+
 /*
  * This is performance-critical, we want to do it O(1)
  *
@@ -120,7 +127,10 @@ struct irq_cfg {
 	u8			vector;
 	u8			move_in_progress : 1;
 #ifdef CONFIG_IRQ_REMAP
-	struct irq_2_iommu	irq_2_iommu;
+	union {
+		struct irq_2_iommu irq_2_iommu;
+		struct irq_2_irte  irq_2_irte;
+	};
 #endif
 };
 
-- 
1.7.9.5


-- 
AMD Operating System Research Center

Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632


WARNING: multiple messages have this Message-ID
From: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
To: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Suresh Siddha
	<suresh.b.siddha-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq remapping information
Date: Thu, 12 Jul 2012 17:40:31 +0200	[thread overview]
Message-ID: <20120712154031.GA4213@amd.com> (raw)
In-Reply-To: <CAE9FiQUEYVMi46WYfLDDUO=PuTHYbmqXreZnCWLRdUjBH2iH4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Wed, Jul 11, 2012 at 02:42:03PM -0700, Yinghai Lu wrote:
> >  #ifdef CONFIG_IRQ_REMAP
> > -       struct irq_2_iommu      irq_2_iommu;
> > +       union irq_remap_info    irq_remap_info;
> 
> how about
> +union {
> +       struct irq_2_iommu irq_2_iommu;
> +       struct irq_2_irte  irq_2_irte;
> +};
> 
> instead?

Yes, that is better. I updated the patch (and 4-5 more patches in the
series to adapt them to this data structure change). I will update the
branch on my tree today and push the version with this change included.
Here is the new patch:

>From a0fd5f10f015629592adc28cb9b79d61d0ba1bfb Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
Date: Tue, 19 Jun 2012 16:07:45 +0200
Subject: [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq
 remapping information

Add a data structure to store information the IOMMU driver
can use to get from a 'struct irq_cfg' to the remapping
entry.

Cc: x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Suresh Siddha <suresh.b.siddha-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Joerg Roedel <joerg.roedel-5C7GfCeVMHo@public.gmane.org>
---
 arch/x86/include/asm/hw_irq.h |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index eb92a6e..fc89a2a 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -101,6 +101,7 @@ static inline void set_io_apic_irq_attr(struct io_apic_irq_attr *irq_attr,
 	irq_attr->polarity	= polarity;
 }
 
+/* Intel specific interrupt remapping information */
 struct irq_2_iommu {
 	struct intel_iommu *iommu;
 	u16 irte_index;
@@ -108,6 +109,12 @@ struct irq_2_iommu {
 	u8  irte_mask;
 };
 
+/* AMD specific interrupt remapping information */
+struct irq_2_irte {
+	u16 devid; /* Device ID for IRTE table */
+	u16 index; /* Index into IRTE table*/
+};
+
 /*
  * This is performance-critical, we want to do it O(1)
  *
@@ -120,7 +127,10 @@ struct irq_cfg {
 	u8			vector;
 	u8			move_in_progress : 1;
 #ifdef CONFIG_IRQ_REMAP
-	struct irq_2_iommu	irq_2_iommu;
+	union {
+		struct irq_2_iommu irq_2_iommu;
+		struct irq_2_irte  irq_2_irte;
+	};
 #endif
 };
 
-- 
1.7.9.5


-- 
AMD Operating System Research Center

Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632

  reply	other threads:[~2012-07-12 15:40 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-11 13:38 [PATCH 0/27] AMD IOMMU interrupt remapping support v2 Joerg Roedel
2012-07-11 13:38 ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq remapping information Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 21:42   ` Yinghai Lu
2012-07-11 21:42     ` Yinghai Lu
2012-07-12 15:40     ` Joerg Roedel [this message]
2012-07-12 15:40       ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 02/27] x86/irq: Introduce irq_cfg->remapped Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 03/27] iommu/amd: Fix sparse warnings Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-17 10:44   ` Joerg Roedel
2012-07-17 10:44     ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 04/27] iommu/amd: Use acpi_get_table instead of acpi_table_parse Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 05/27] iommu/amd: Split out PCI related parts of IOMMU initialization Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 06/27] iommu/amd: Move informational prinks out of iommu_enable Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 07/27] iommu/amd: Introduce early_amd_iommu_init routine Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 08/27] iommu/amd: Split enable_iommus() routine Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 09/27] iommu/amd: Move unmap_flush message to amd_iommu_init_dma_ops() Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 10/27] iommu/amd: Introduce amd_iommu_init_dma routine Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 11/27] iommu/amd: Convert iommu initialization to state machine Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 12/27] iommu/amd: Keep track of HPET and IOAPIC device ids Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 13/27] iommu/amd: Add slab-cache for irq remapping tables Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:38 ` [PATCH 14/27] iommu/amd: Allocate data structures to keep track of " Joerg Roedel
2012-07-11 13:38   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 15/27] iommu/amd: Check if IOAPIC information is correct Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 16/27] iommu/amd: Split device table initialization into irq and dma part Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 17/27] iommu/amd: Make sure IOMMU is not considered to translate itself Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 18/27] iommu/amd: Add IRTE invalidation routine Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 19/27] iommu/amd: Add routines to manage irq remapping tables Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 20/27] iommu/amd: Add IOAPIC remapping routines Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 21/27] iommu/amd: Implement MSI routines for interrupt remapping Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 22/27] iommu/amd: Add call-back routine for HPET MSI Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 23/27] iommu/amd: Add initialization routines for AMD interrupt remapping Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 24/27] iommu/amd: Make sure irq remapping still works on dma init failure Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 25/27] iommu/irq: Use amd_iommu_irq_ops if supported Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 26/27] iommu/amd: Print message to system log when irq remapping is enabled Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel
2012-07-11 13:39 ` [PATCH 27/27] iommu/amd: Report irq remapping through IOMMU-API Joerg Roedel
2012-07-11 13:39   ` Joerg Roedel

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120712154031.GA4213@amd.com \
    --to=joerg.roedel@amd.com \
    --cc=iommu@lists.linux-foundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=suresh.b.siddha@intel.com \
    --cc=x86@kernel.org \
    --cc=yinghai@kernel.org \
    --subject='Re: [PATCH 01/27] x86/irq: Add data structure to keep AMD specific irq remapping information' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.