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From 81ad0ed44690596a846ac39da0b2fd966973fc21 Mon Sep 17 00:00:00 2001
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From: Dan Williams <dan.j.williams@intel.com>
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Date: Fri, 5 Aug 2022 13:38:14 -0700
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Subject: [PATCH 204/217] cxl/list: Filter decoders by region
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With a region name in hand, it is useful to be able to filter all the
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decoders in the topology that are mapping that region.
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Link: https://lore.kernel.org/r/165973189465.1528532.9072953032089147905.stgit@dwillia2-xfh.jf.intel.com
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Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
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---
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cxl/filter.c | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/cxl/filter.c b/cxl/filter.c
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index 38ece55..9a3de8c 100644
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--- a/cxl/filter.c
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+++ b/cxl/filter.c
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@@ -652,6 +652,26 @@ struct cxl_region *util_cxl_region_filter(struct cxl_region *region,
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}
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+static struct cxl_decoder *
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+util_cxl_decoder_filter_by_region(struct cxl_decoder *decoder,
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+ const char *__ident)
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+{
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+ struct cxl_region *region;
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+
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+ if (!__ident)
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+ return decoder;
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+
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+ region = cxl_decoder_get_region(decoder);
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+ if (!region)
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+ return NULL;
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+
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+ region = util_cxl_region_filter(region, __ident);
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+ if (!region)
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+ return NULL;
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+
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+ return decoder;
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+}
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+
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static unsigned long params_to_flags(struct cxl_filter_params *param)
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{
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unsigned long flags = 0;
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@@ -790,6 +810,9 @@ static void walk_decoders(struct cxl_port *port, struct cxl_filter_params *p,
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if (!util_cxl_decoder_filter_by_memdev(
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decoder, p->memdev_filter, p->serial_filter))
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goto walk_children;
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+ if (!util_cxl_decoder_filter_by_region(decoder,
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+ p->region_filter))
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+ goto walk_children;
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if (!p->idle && cxl_decoder_get_size(decoder) == 0)
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continue;
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jdecoder = util_cxl_decoder_to_json(decoder, flags);
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--
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2.27.0
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