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crypto: ccp - Factor out ring destroy handling to a helper

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The ring destroy command needs to be used in multiple places. Split
out the code to a helper.

Tested-by: Yijun Shen <Yijun.Shen@Dell.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20260116041132.153674-5-superm1@kernel.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Mario Limonciello (AMD)
2026-01-15 22:11:31 -06:00
committed by Ilpo Järvinen
parent 0ba2035026
commit d95f87a65b
1 changed files with 24 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/crypto/ccp/tee-dev.c
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@@ -86,6 +86,29 @@ static inline void tee_free_cmd_buffer(struct tee_init_ring_cmd *cmd)
kfree(cmd);
}
static bool tee_send_destroy_cmd(struct psp_tee_device *tee)
{
unsigned int reg;
int ret;
ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_DESTROY, NULL,
TEE_DEFAULT_CMD_TIMEOUT, &reg);
if (ret) {
dev_err(tee->dev, "tee: ring destroy command timed out, disabling TEE support\n");
psp_dead = true;
return false;
}
if (FIELD_GET(PSP_CMDRESP_STS, reg)) {
dev_err(tee->dev, "tee: ring destroy command failed (%#010lx)\n",
FIELD_GET(PSP_CMDRESP_STS, reg));
psp_dead = true;
return false;
}
return true;
}
static int tee_init_ring(struct psp_tee_device *tee)
{
int ring_size = MAX_RING_BUFFER_ENTRIES * sizeof(struct tee_ring_cmd);
@@ -137,24 +160,13 @@ static int tee_init_ring(struct psp_tee_device *tee)
static void tee_destroy_ring(struct psp_tee_device *tee)
{
unsigned int reg;
int ret;
if (!tee->rb_mgr.ring_start)
return;
if (psp_dead)
goto free_ring;
ret = psp_mailbox_command(tee->psp, PSP_CMD_TEE_RING_DESTROY, NULL,
TEE_DEFAULT_CMD_TIMEOUT, &reg);
if (ret) {
dev_err(tee->dev, "tee: ring destroy command timed out, disabling TEE support\n");
psp_dead = true;
} else if (FIELD_GET(PSP_CMDRESP_STS, reg)) {
dev_err(tee->dev, "tee: ring destroy command failed (%#010lx)\n",
FIELD_GET(PSP_CMDRESP_STS, reg));
}
tee_send_destroy_cmd(tee);
free_ring:
tee_free_ring(tee);