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| author | Dan Williams <dan.j.williams@intel.com> | 2022-05-22 02:24:14 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-07-21 18:41:20 +0300 |
| commit | 3bf65915cefa879e3693a824d8801a08e4778619 (patch) | |
| tree | ce0808cf81df257bf3f19c18a6c421067c4d806d /drivers/cxl/core/hdm.c | |
| parent | 0f157c7fa1a0e1a55b602d8b269344392e9033ad (diff) | |
| download | linux-3bf65915cefa879e3693a824d8801a08e4778619.tar.xz | |
cxl/core: Define a 'struct cxl_endpoint_decoder'
Previously the target routing specifics of switch decoders and platform
CXL window resource tracking of root decoders were factored out of
'struct cxl_decoder'. While switch decoders translate from SPA to
downstream ports, endpoint decoders translate from SPA to DPA.
This patch, 3 of 3, adds a 'struct cxl_endpoint_decoder' that tracks an
endpoint-specific Device Physical Address (DPA) resource. For now this
just defines ->dpa_res, a follow-on patch will handle requesting DPA
resource ranges from a device-DPA resource tree.
Co-developed-by: Ben Widawsky <bwidawsk@kernel.org>
Signed-off-by: Ben Widawsky <bwidawsk@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/165784327088.1758207.15502834501671201192.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/core/hdm.c')
| -rw-r--r-- | drivers/cxl/core/hdm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c index 2f10d42798de..650363d5272f 100644 --- a/drivers/cxl/core/hdm.c +++ b/drivers/cxl/core/hdm.c @@ -256,12 +256,15 @@ int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm) struct cxl_decoder *cxld; if (is_cxl_endpoint(port)) { - cxld = cxl_endpoint_decoder_alloc(port); - if (IS_ERR(cxld)) { + struct cxl_endpoint_decoder *cxled; + + cxled = cxl_endpoint_decoder_alloc(port); + if (IS_ERR(cxled)) { dev_warn(&port->dev, "Failed to allocate the decoder\n"); - return PTR_ERR(cxld); + return PTR_ERR(cxled); } + cxld = &cxled->cxld; } else { struct cxl_switch_decoder *cxlsd; |