starred/qemu
1
0
Fork 0
mirror of https://github.com/qemu/qemu.git synced 2026-04-05 22:00:58 +00:00
Code Issues 380 Packages Projects Releases Wiki Activity

hw/cxl: Exclude Discovery from Media Operation Discovery output

Browse Source 
Per CXL 4.0 Table 8-331, the Discovery operation "returns a list of
all Media Operations that the device supports, with the exception of
the Discovery operation (Class=0, Subclass=0)."

Filter out Discovery entries when building the output list and adjust
total_supported_operations accordingly.

Fixes: 77a8e9fe0e ("hw/cxl/cxl-mailbox-utils: Add support for Media operations discovery commands cxl r3.2 (8.2.10.9.5.3)")
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Message-ID: <20260319184256.3762391-3-dave@stgolabs.net>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Davidlohr Bueso
2026-03-19 11:42:56 -07:00
committed by Philippe Mathieu-Daudé
parent bc72b2996c
commit 20beec283b
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
hw/cxl/cxl-mailbox-utils.c
View File

@@ -2675,7 +2675,7 @@ static CXLRetCode media_operations_discovery(uint8_t *payload_in,
} QEMU_PACKED *media_op_in_disc_pl = (void *)payload_in; } QEMU_PACKED *media_op_in_disc_pl = (void *)payload_in;
struct media_op_discovery_out_pl *media_out_pl = struct media_op_discovery_out_pl *media_out_pl =
(struct media_op_discovery_out_pl *)payload_out; (struct media_op_discovery_out_pl *)payload_out;
int total = ARRAY_SIZE(media_op_matrix); int total = ARRAY_SIZE(media_op_matrix) - 1; /* exclude Discovery */
int num_ops, start_index, i; int num_ops, start_index, i;
int count = 0; int count = 0;
@@ -2701,10 +2701,12 @@ static CXLRetCode media_operations_discovery(uint8_t *payload_in,
num_ops = MIN(num_ops, total - start_index); num_ops = MIN(num_ops, total - start_index);
for (i = 0; i < num_ops; i++) { for (i = 0; i < num_ops; i++) {
int idx = start_index + i + 1; /* skip Discovery (first entry) */
media_out_pl->entry[count].media_op_class = media_out_pl->entry[count].media_op_class =
media_op_matrix[start_index + i].media_op_class; media_op_matrix[idx].media_op_class;
media_out_pl->entry[count].media_op_subclass = media_out_pl->entry[count].media_op_subclass =
media_op_matrix[start_index + i].media_op_subclass; media_op_matrix[idx].media_op_subclass;
count++; count++;
} }