From: Julien Grall <julien.grall@citrix.com>
To: vijay.kilari@gmail.com, Ian.Campbell@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
Subject: Re: [PATCH v6 06/31] xen/arm: ITS: Port ITS driver to Xen
Date: Mon, 31 Aug 2015 16:41:31 +0100 [thread overview]
Message-ID: <55E475AB.8040309@citrix.com> (raw)
In-Reply-To: <1441019208-2764-7-git-send-email-vijay.kilari@gmail.com>
Hi Vijay,
This patch now looks good. A few comments below.
First, I've noticed that you moved again its_send_inv into patch #13. On
a previous version (v4) we asked you to keep all the code imported by
Linux in a single patch. You moved it correctly in v5 but then moved
again out in this version.
You could have avoid this move by splitting the patch #13 in 2 parts:
- part 1: introduce the hw_irq_controller for LPIs
- part 2: plumbing the hw_irq_controller
The part 1 would live before patch #11 which enable the ITS compilation.
On 31/08/2015 12:06, vijay.kilari@gmail.com wrote:
> From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
>
> The linux driver is based on 4.1 with below commit id
>
> 3ad2a5f57656a14d964b673a5a0e4ab0e583c870
I'm sure the commit ID should be changed as you also include
"591e5bec13f15feb13fc445b6c9c59954711c4ac".
Note that it's the only commit modifying drivers/irqchip/gic-v3-its.c
since the commit ID you mentioned above.
[..]
> diff --git a/xen/arch/arm/gic-v3-its.c b/xen/arch/arm/gic-v3-its.c
> new file mode 100644
> index 0000000..4ad8d8e
> --- /dev/null
> +++ b/xen/arch/arm/gic-v3-its.c
> @@ -0,0 +1,1011 @@
[...]
> +static void its_lpi_free(struct its_device *dev)
> +{
> + int lpi;
> +
> + spin_lock(&lpi_lock);
> +
> + for ( lpi = dev->event_map.lpi_base;
> + lpi < (dev->event_map.lpi_base + dev->event_map.nr_lpis);
> + lpi += IRQS_PER_CHUNK )
The indentation was valid on the previous version. Why did you change it?
> + {
> + int chunk = its_lpi_to_chunk(lpi);
> +
> + if (chunk > lpi_chunks)
> + its_err("Bad LPI chunk %d\n", chunk);
> + if ( test_bit(chunk, lpi_bitmap) )
> + clear_bit(chunk, lpi_bitmap);
> + }
> +
> + spin_unlock(&lpi_lock);
> +
> + xfree(dev->event_map.lpi_map);
> +}
[...]
> +static bool gic_rdists_supports_plpis(void)
> +{
> + return !!(readl_relaxed(gic_data_rdist().rbase + GICR_TYPER) & GICR_TYPER_PLPIS);
The line should be less 80 characters. Please split it.
> +}
> +
> +int its_cpu_init(void)
> +{
> + if ( !list_empty(&its_nodes) )
> + {
> + if ( !gic_rdists_supports_plpis() )
> + {
> + its_info("CPU%d: LPIs not supported\n", smp_processor_id());
> + return -ENXIO;
> + }
> + its_cpu_init_lpis();
> + its_cpu_init_collection();
> + }
> +
> + return 0;
> +}
> +
> +int __init its_init(struct rdist_prop *rdists)
> +{
> + struct dt_device_node *np = NULL;
> +
> + static const struct dt_device_match its_device_ids[] __initconst =
> + {
> + DT_MATCH_GIC_ITS,
> + { /* sentinel */ },
> + };
> +
> + for (np = dt_find_matching_node(NULL, its_device_ids); np;
> + np = dt_find_matching_node(np, its_device_ids))
Coding style:
for ( ... )
And the indentation of the second line is still wrong it should be
for ( np ...
np = dt_find... )
> + its_probe(np);
> +
> + if ( list_empty(&its_nodes) )
> + {
> + its_warn("ITS: No ITS available, not enabling LPIs\n");
> + return -ENXIO;
> + }
> +
> + gic_rdists = rdists;
> + its_alloc_lpi_tables();
> + its_lpi_init(rdists->id_bits);
> +
> + return 0;
> +}
Regards,
--
Julien Grall
next prev parent reply other threads:[~2015-08-31 15:41 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 [this message]
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 ` [PATCH v6 17/31] xen/arm: ITS: Store LPIs allocated and IRQ ID bits per domain vijay.kilari
2015-09-03 16:25 ` 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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