Commit 082802a3 authored by Koby Elbaz's avatar Koby Elbaz Committed by Rodrigo Vivi
Browse files

drm/xe: add skip_pcode flag 



Per device, set this flag to enable access to the PCODE uC or to skip it.

Signed-off-by: default avatarKoby Elbaz <kelbaz@habana.ai>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent 8e357802

drivers/gpu/drm/xe/xe_device_types.h

+2 −0
Original line number Diff line number Diff line
@@ -260,6 +260,8 @@ struct xe_device { 
		u8 enable_display:1;

		/** @bypass_mtcfg: Bypass Multi-Tile configuration from MTCFG register */

		u8 bypass_mtcfg:1;

		/** @skip_pcode: skip access to PCODE uC */

		u8 skip_pcode:1;

		/** @supports_mmio_ext: supports MMIO extension/s */

		u8 supports_mmio_ext:1;

		/** @has_heci_gscfi: device has heci gscfi */

drivers/gpu/drm/xe/xe_pci.c

+2 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ struct xe_device_desc { 
	u8 has_llc:1;

	u8 has_sriov:1;

	u8 bypass_mtcfg:1;

	u8 skip_pcode:1;

	u8 supports_mmio_ext:1;

	u8 skip_guc_pc:1;

};
@@ -581,6 +582,7 @@ static int xe_info_init(struct xe_device *xe, 
	xe->info.has_llc = desc->has_llc;

	xe->info.has_sriov = desc->has_sriov;

	xe->info.bypass_mtcfg = desc->bypass_mtcfg;

	xe->info.skip_pcode = desc->skip_pcode;

	xe->info.supports_mmio_ext = desc->supports_mmio_ext;

	xe->info.tile_mmio_ext_size = graphics_desc->tile_mmio_ext_size;

drivers/gpu/drm/xe/xe_pcode.c

+9 −0
Original line number Diff line number Diff line
@@ -61,6 +61,9 @@ static int pcode_mailbox_rw(struct xe_gt *gt, u32 mbox, u32 *data0, u32 *data1, 
{

	int err;



	if (gt_to_xe(gt)->info.skip_pcode)

		return 0;



	lockdep_assert_held(&gt->pcode.lock);



	if ((xe_mmio_read32(gt, PCODE_MAILBOX) & PCODE_READY) != 0)
@@ -249,6 +252,9 @@ int xe_pcode_init(struct xe_gt *gt) 
	int timeout_us = 180000000; /* 3 min */

	int ret;



	if (gt_to_xe(gt)->info.skip_pcode)

		return 0;



	if (!IS_DGFX(gt_to_xe(gt)))

		return 0;
@@ -280,6 +286,9 @@ int xe_pcode_probe(struct xe_gt *gt) 
{

	drmm_mutex_init(&gt_to_xe(gt)->drm, &gt->pcode.lock);



	if (gt_to_xe(gt)->info.skip_pcode)

		return 0;



	if (!IS_DGFX(gt_to_xe(gt)))

		return 0;