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drm/xe: add skip_pcode flag

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

Signed-off-by: Koby Elbaz <kelbaz@habana.ai>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Koby Elbaz 2023-11-28 18:53:15 +02:00 committed by Rodrigo Vivi
parent 8e35780233
commit 082802a3ee
3 changed files with 13 additions and 0 deletions
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2
drivers/gpu/drm/xe/xe_device_types.h
View File

@ -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 */

2
drivers/gpu/drm/xe/xe_pci.c
View File

@ -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;

9
drivers/gpu/drm/xe/xe_pcode.c
View File

@ -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;