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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: Teh Wen Ping <wen.ping.teh@intel.com>
Signed-off-by: Kah Jing Lee <kah.jing.lee@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20230727192907.982070-1-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Teh Wen Ping 2023-07-27 14:29:06 -05:00 committed by Greg Kroah-Hartman
parent dff054e691
commit 34949a31fb
3 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/firmware/stratix10-svc.c
View File

@ -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;

25
include/linux/firmware/intel/stratix10-smc.h
View File

@ -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
*

5
include/linux/firmware/intel/stratix10-svc-client.h
View File

@ -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,
};