Commit 34949a31 authored by Teh Wen Ping's avatar Teh Wen Ping Committed by Greg Kroah-Hartman
Browse files

firmware: stratix10-svc: Generic Mailbox Command 



Add generic mailbox command that can support SDM command. User can use this
command to send SDM mailbox command. User have to specified an input file
which contain the command data and an output file for SDM response to be
copied over.

Signed-off-by: default avatarTeh Wen Ping <wen.ping.teh@intel.com>
Signed-off-by: default avatarKah Jing Lee <kah.jing.lee@intel.com>
Signed-off-by: default avatarDinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20230727192907.982070-1-dinguyen@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dff054e6

drivers/firmware/stratix10-svc.c

+18 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#define SVC_NUM_CHANNEL				3

#define FPGA_CONFIG_DATA_CLAIM_TIMEOUT_MS	200

#define FPGA_CONFIG_STATUS_TIMEOUT_SEC		30

#define BYTE_TO_WORD_SIZE              4



/* stratix10 service layer clients */

#define STRATIX10_RSU				"stratix10-rsu"
@@ -361,6 +362,13 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data, 
		cb_data->kaddr2 = svc_pa_to_va(res.a2);

		cb_data->kaddr3 = &res.a3;

		break;

	case COMMAND_MBOX_SEND_CMD:

		cb_data->status = BIT(SVC_STATUS_OK);

		cb_data->kaddr1 = &res.a1;

		/* SDM return size in u8. Convert size to u32 word */

		res.a2 = res.a2 * BYTE_TO_WORD_SIZE;

		cb_data->kaddr2 = &res.a2;

		break;

	default:

		pr_warn("it shouldn't happen\n");

		break;
@@ -534,6 +542,15 @@ static int svc_normal_to_secure_thread(void *data) 
			a1 = 0;

			a2 = 0;

			break;

		case COMMAND_MBOX_SEND_CMD:

			a0 = INTEL_SIP_SMC_MBOX_SEND_CMD;

			a1 = pdata->arg[0];

			a2 = (unsigned long)pdata->paddr;

			a3 = (unsigned long)pdata->size / BYTE_TO_WORD_SIZE;

			a4 = pdata->arg[1];

			a5 = (unsigned long)pdata->paddr_output;

			a6 = (unsigned long)pdata->size_output / BYTE_TO_WORD_SIZE;

			break;

		default:

			pr_warn("it shouldn't happen\n");

			break;
@@ -597,6 +614,7 @@ static int svc_normal_to_secure_thread(void *data) 
			case COMMAND_FCS_DATA_ENCRYPTION:

			case COMMAND_FCS_DATA_DECRYPTION:

			case COMMAND_FCS_RANDOM_NUMBER_GEN:

			case COMMAND_MBOX_SEND_CMD:

				cbdata->status = BIT(SVC_STATUS_INVALID_PARAM);

				cbdata->kaddr1 = NULL;

				cbdata->kaddr2 = NULL;

include/linux/firmware/intel/stratix10-smc.h

+25 −0
Original line number Diff line number Diff line
@@ -466,6 +466,31 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) 
#define INTEL_SIP_SMC_FIRMWARE_VERSION \

        INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION)



/**

 * SMC call protocol for Mailbox, starting FUNCID from 60

 *

 * Call register usage:

 * a0 INTEL_SIP_SMC_MBOX_SEND_CMD

 * a1 mailbox command code

 * a2 physical address that contain mailbox command data (not include header)

 * a3 mailbox command data size in word

 * a4 set to 0 for CASUAL, set to 1 for URGENT

 * a5 physical address for secure firmware to put response data

 *    (not include header)

 * a6 maximum size in word of physical address to store response data

 * a7 not used

 *

 * Return status

 * a0 INTEL_SIP_SMC_STATUS_OK, INTEL_SIP_SMC_STATUS_REJECTED or

 *    INTEL_SIP_SMC_STATUS_ERROR

 * a1 mailbox error code

 * a2 response data length in word

 * a3 not used

 */

#define INTEL_SIP_SMC_FUNCID_MBOX_SEND_CMD 60

	#define INTEL_SIP_SMC_MBOX_SEND_CMD \

	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_MBOX_SEND_CMD)



/**

 * Request INTEL_SIP_SMC_SVC_VERSION

 *

include/linux/firmware/intel/stratix10-svc-client.h

+5 −0
Original line number Diff line number Diff line
@@ -118,6 +118,9 @@ struct stratix10_svc_chan; 
 * @COMMAND_SMC_SVC_VERSION: Non-mailbox SMC SVC API Version,

 * return status is SVC_STATUS_OK

 *

 * @COMMAND_MBOX_SEND_CMD: send generic mailbox command, return status is

 * SVC_STATUS_OK or SVC_STATUS_ERROR

 *

 * @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status

 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR

 *
@@ -164,6 +167,8 @@ enum stratix10_svc_command_code { 
	COMMAND_FCS_RANDOM_NUMBER_GEN,

	/* for general status poll */

	COMMAND_POLL_SERVICE_STATUS = 40,

	/* for generic mailbox send command */

	COMMAND_MBOX_SEND_CMD = 100,

	/* Non-mailbox SMC Call */

	COMMAND_SMC_SVC_VERSION = 200,

};