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firmware: stratix10-svc: extend SVC driver to get the firmware version 

Extend Intel service layer driver to get the firmware version running at
FPGA device. Therefore FPGA manager driver, one of Intel service layer
driver's client, can decide whether to handle the newly added bitstream
authentication function based on the retrieved firmware version.

Link: https://lore.kernel.org/lkml/1617114785-22211-2-git-send-email-richard.gong@linux.intel.com
Acked-by: Moritz Fischr <mdf@kernel.org>
Signed-off-by: Richard Gong <richard.gong@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20220223144908.399522-2-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Richard Gong 2022-02-23 08:49:08 -06:00 committed by Greg Kroah-Hartman
parent 7d658f5c40
commit 085a884434
3 changed files with 31 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/firmware/stratix10-svc.c
View File

@ -306,6 +306,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
break;
case COMMAND_RSU_RETRY:
case COMMAND_RSU_MAX_RETRY:
case COMMAND_FIRMWARE_VERSION:
cb_data->status = BIT(SVC_STATUS_OK);
cb_data->kaddr1 = &res.a1;
break;
@ -422,6 +423,11 @@ static int svc_normal_to_secure_thread(void *data)
a1 = 0;
a2 = 0;
break;
case COMMAND_FIRMWARE_VERSION:
a0 = INTEL_SIP_SMC_FIRMWARE_VERSION;
a1 = 0;
a2 = 0;
break;
default:
pr_warn("it shouldn't happen\n");
break;
@ -491,7 +497,8 @@ static int svc_normal_to_secure_thread(void *data)
*/
if ((pdata->command == COMMAND_RSU_RETRY) ||
(pdata->command == COMMAND_RSU_MAX_RETRY) ||
(pdata->command == COMMAND_RSU_NOTIFY)) {
(pdata->command == COMMAND_RSU_NOTIFY) ||
(pdata->command == COMMAND_FIRMWARE_VERSION)) {
cbdata->status =
BIT(SVC_STATUS_NO_SUPPORT);
cbdata->kaddr1 = NULL;

21
include/linux/firmware/intel/stratix10-smc.h
View File

@ -321,8 +321,6 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_ECC_DBE \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_ECC_DBE)
#endif
/**
* Request INTEL_SIP_SMC_RSU_NOTIFY
*
@ -404,3 +402,22 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY 18
#define INTEL_SIP_SMC_RSU_MAX_RETRY \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY)
/**
* Request INTEL_SIP_SMC_FIRMWARE_VERSION
*
* Sync call used to query the version of running firmware
*
* Call register usage:
* a0 INTEL_SIP_SMC_FIRMWARE_VERSION
* a1-a7 not used
*
* Return status:
* a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_STATUS_ERROR
* a1 running firmware version
*/
#define INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION 31
#define INTEL_SIP_SMC_FIRMWARE_VERSION \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION)
#endif

4
include/linux/firmware/intel/stratix10-svc-client.h
View File

@ -104,6 +104,9 @@ struct stratix10_svc_chan;
*
* @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
* is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
* is SVC_STATUS_OK or SVC_STATUS_ERROR
*/
enum stratix10_svc_command_code {
COMMAND_NOOP = 0,
@ -117,6 +120,7 @@ enum stratix10_svc_command_code {
COMMAND_RSU_RETRY,
COMMAND_RSU_MAX_RETRY,
COMMAND_RSU_DCMF_VERSION,
COMMAND_FIRMWARE_VERSION,
};
/**