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Commit 839c4803 authored by Oded Gabbay's avatar Oded Gabbay Committed by Greg Kroah-Hartman
Browse files

habanalabs: add basic Goya h/w initialization 



This patch adds the basic part of Goya's H/W initialization. It adds code
that initializes Goya's internal CPU, various registers that are related to
internal routing, scrambling, workarounds for H/W bugs, etc.

It also initializes Goya's security scheme that prevents the user from
abusing Goya to steal data from the host, crash the host, change
Goya's F/W, etc.

Reviewed-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent be5d926b

drivers/misc/habanalabs/device.c

+12 −0
Original line number Diff line number Diff line
@@ -319,6 +319,15 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass) 
		goto release_ctx;

	}



	rc = hdev->asic_funcs->hw_init(hdev);

	if (rc) {

		dev_err(hdev->dev, "failed to initialize the H/W\n");

		rc = 0;

		goto out_disabled;

	}



	hdev->disabled = false;



	dev_notice(hdev->dev,

		"Successfully added device to habanalabs driver\n");
@@ -370,6 +379,9 @@ void hl_device_fini(struct hl_device *hdev) 
	if ((hdev->kernel_ctx) && (hl_ctx_put(hdev->kernel_ctx) != 1))

		dev_err(hdev->dev, "kernel ctx is still alive\n");



	/* Reset the H/W. It will be in idle state after this returns */

	hdev->asic_funcs->hw_fini(hdev, true);



	/* Call ASIC S/W finalize function */

	hdev->asic_funcs->sw_fini(hdev);

drivers/misc/habanalabs/goya/Makefile

+1 −1
Original line number Diff line number Diff line 
subdir-ccflags-y += -I$(src)



HL_GOYA_FILES :=  goya/goya.o
 
HL_GOYA_FILES :=  goya/goya.o goya/goya_security.o

drivers/misc/habanalabs/goya/goya.c

+875 −7

File changed.

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drivers/misc/habanalabs/goya/goyaP.h

+4 −0
Original line number Diff line number Diff line
@@ -10,7 +10,9 @@ 


#include <uapi/misc/habanalabs.h>

#include "habanalabs.h"

#include "include/hl_boot_if.h"

#include "include/goya/goya.h"

#include "include/goya/goya_fw_if.h"



#define NUMBER_OF_CMPLT_QUEUES		5

#define NUMBER_OF_EXT_HW_QUEUES		5
@@ -149,4 +151,6 @@ struct goya_device { 
	u32		hw_cap_initialized;

};



void goya_init_security(struct hl_device *hdev);



#endif /* GOYAP_H_ */

drivers/misc/habanalabs/goya/goya_security.c

0 → 100644
+2999 −0

File added.

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