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cxl: Add a cached copy of target_map to cxl_decoder

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Add a cached copy of the hardware port-id list that is available at init
before all @dport objects have been instantiated. Change is in preparation
of delayed dport instantiation.

Reviewed-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Tested-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Dave Jiang
2025-08-29 11:09:21 -07:00
parent 8330671c57
commit 02edab6cee
6 changed files with 31 additions and 38 deletions
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8
tools/testing/cxl/test/cxl.c
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@@ -651,7 +651,7 @@ static int mock_cxl_add_passthrough_decoder(struct cxl_port *port)
struct target_map_ctx {
int *target_map;
u32 *target_map;
int index;
int target_count;
};
@@ -863,9 +863,7 @@ static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
target_count = NR_CXL_SWITCH_PORTS;
for (i = 0; i < NR_CXL_PORT_DECODERS; i++) {
int target_map[CXL_DECODER_MAX_INTERLEAVE] = { 0 };
struct target_map_ctx ctx = {
.target_map = target_map,
.target_count = target_count,
};
struct cxl_decoder *cxld;
@@ -894,6 +892,8 @@ static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
cxld = &cxled->cxld;
}
ctx.target_map = cxld->target_map;
mock_init_hdm_decoder(cxld);
if (target_count) {
@@ -905,7 +905,7 @@ static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
}
}
rc = cxl_decoder_add_locked(cxld, target_map);
rc = cxl_decoder_add_locked(cxld);
if (rc) {
put_device(&cxld->dev);
dev_err(&port->dev, "Failed to add decoder\n");