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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: Ang Tien Sung <tien.sung.ang@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20220711223140.2307945-1-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ang Tien Sung 2022-07-11 17:31:35 -05:00 committed by Greg Kroah-Hartman
parent 6c93c6f3ba
commit e6281c2667
2 changed files with 26 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/firmware/stratix10-svc.c
View File

@ -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);

1
include/linux/firmware/intel/stratix10-svc-client.h
View File

@ -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