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From ac0066a6095e9ed0910fc560277ec693d3b507fa Mon Sep 17 00:00:00 2001
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From: Alison Schofield <alison.schofield@intel.com>
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Date: Tue, 22 Feb 2022 11:56:05 -0800
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Subject: [PATCH 134/217] libcxl: return the partition alignment field in bytes
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Per the CXL specification, the partition alignment field reports
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the alignment value in multiples of 256MB. In the libcxl API, values
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for all capacity fields are defined to return bytes.
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Update the partition alignment accessor to return bytes so that it
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is in sync with other capacity related fields.
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Since this is early in the development cycle, the expectation is that
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no third party consumers of this library have come to depend on the
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encoded capacity field. If that is not the case, the original format
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can be restored, and a new _bytes version introduced.
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Link: https://lore.kernel.org/r/6b937b09b61ddf95e069fd7acfda0c5bbb845be8.1645558189.git.alison.schofield@intel.com
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Reviewed-by: Dan Williams <dan.j.williams@intel.com>
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Signed-off-by: Alison Schofield <alison.schofield@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/lib/libcxl.c | 13 +++++--------
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1 file changed, 5 insertions(+), 8 deletions(-)
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diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c
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index 9413384..c05c13c 100644
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--- a/cxl/lib/libcxl.c
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+++ b/cxl/lib/libcxl.c
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@@ -2308,15 +2308,12 @@ CXL_EXPORT int cxl_cmd_identify_get_fw_rev(struct cxl_cmd *cmd, char *fw_rev,
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CXL_EXPORT unsigned long long cxl_cmd_identify_get_partition_align(
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struct cxl_cmd *cmd)
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{
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- struct cxl_cmd_identify *id =
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- (struct cxl_cmd_identify *)cmd->send_cmd->out.payload;
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-
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- if (cmd->send_cmd->id != CXL_MEM_COMMAND_ID_IDENTIFY)
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- return -EINVAL;
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- if (cmd->status < 0)
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- return cmd->status;
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+ struct cxl_cmd_identify *c;
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- return le64_to_cpu(id->partition_align);
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+ c = cmd_to_identify(cmd);
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+ if (!c)
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+ return ULLONG_MAX;
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+ return cxl_capacity_to_bytes(c->partition_align);
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}
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CXL_EXPORT unsigned int cxl_cmd_identify_get_label_size(struct cxl_cmd *cmd)
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--
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2.27.0
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