Commit e6281c26 authored by Ang Tien Sung's avatar Ang Tien Sung Committed by Greg Kroah-Hartman
Browse files

firmware: stratix10-svc: Add support for FCS 



Extend Intel service layer driver to support FPGA Crypto service(FCS)
features on Intel Soc platforms. Adding an additional channel and FCS
platform driver ("intel_fcs") as part of the probe method.
FCS driver uses the driver to send crypto operations' commands to
the secure device manager(SDM) on Intel Soc platforms Stratix10 and
Agilex.

Signed-off-by: default avatarAng Tien Sung <tien.sung.ang@intel.com>
Signed-off-by: default avatarDinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20220711223140.2307945-1-dinguyen@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6c93c6f3

drivers/firmware/stratix10-svc.c

+25 −5
Original line number Diff line number Diff line
@@ -34,12 +34,13 @@ 
 * timeout is set to 30 seconds (30 * 1000) at Intel Stratix10 SoC.

 */

#define SVC_NUM_DATA_IN_FIFO			32

#define SVC_NUM_CHANNEL				2

#define SVC_NUM_CHANNEL				3

#define FPGA_CONFIG_DATA_CLAIM_TIMEOUT_MS	200

#define FPGA_CONFIG_STATUS_TIMEOUT_SEC		30



/* stratix10 service layer clients */

#define STRATIX10_RSU				"stratix10-rsu"

#define INTEL_FCS				"intel-fcs"



typedef void (svc_invoke_fn)(unsigned long, unsigned long, unsigned long,

			     unsigned long, unsigned long, unsigned long,
@@ -53,6 +54,7 @@ struct stratix10_svc_chan; 
 */

struct stratix10_svc {

	struct platform_device *stratix10_svc_rsu;

	struct platform_device *intel_svc_fcs;

};



/**
@@ -1036,6 +1038,11 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev) 
	chans[1].name = SVC_CLIENT_RSU;

	spin_lock_init(&chans[1].lock);



	chans[2].scl = NULL;

	chans[2].ctrl = controller;

	chans[2].name = SVC_CLIENT_FCS;

	spin_lock_init(&chans[2].lock);



	list_add_tail(&controller->node, &svc_ctrl);

	platform_set_drvdata(pdev, controller);
@@ -1054,8 +1061,22 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev) 
	}



	ret = platform_device_add(svc->stratix10_svc_rsu);

	if (ret)

		goto err_put_device;

	if (ret) {

		platform_device_put(svc->stratix10_svc_rsu);

		return ret;

	}



	svc->intel_svc_fcs = platform_device_alloc(INTEL_FCS, 1);

	if (!svc->intel_svc_fcs) {

		dev_err(dev, "failed to allocate %s device\n", INTEL_FCS);

		return -ENOMEM;

	}



	ret = platform_device_add(svc->intel_svc_fcs);

	if (ret) {

		platform_device_put(svc->intel_svc_fcs);

		return ret;

	}



	dev_set_drvdata(dev, svc);
@@ -1063,8 +1084,6 @@ static int stratix10_svc_drv_probe(struct platform_device *pdev) 


	return 0;



err_put_device:

	platform_device_put(svc->stratix10_svc_rsu);

err_free_kfifo:

	kfifo_free(&controller->svc_fifo);

	return ret;
@@ -1075,6 +1094,7 @@ static int stratix10_svc_drv_remove(struct platform_device *pdev) 
	struct stratix10_svc *svc = dev_get_drvdata(&pdev->dev);

	struct stratix10_svc_controller *ctrl = platform_get_drvdata(pdev);



	platform_device_unregister(svc->intel_svc_fcs);

	platform_device_unregister(svc->stratix10_svc_rsu);



	kfifo_free(&ctrl->svc_fifo);

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

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
 */

#define SVC_CLIENT_FPGA			"fpga"

#define SVC_CLIENT_RSU			"rsu"

#define SVC_CLIENT_FCS			"fcs"



/*

 * Status of the sent command, in bit number