Commit 5746eaaa authored by José Roberto de Souza's avatar José Roberto de Souza
Browse files

drm/xe: Add functions to convert regular address to canonical address and back 



Some instructions requires canonical address like
MI_BATCH_BUFFER_START(UMDs must call xe_exec with a canonical address
for Xe2+).

So here adding functions to convert regular address to canonical
address and back, the first user of this functions will be added
in the next patch.

v3:
- inline removed
- rename highest_address_bit_get() to ppgtt_msb_get()

v4:
- use xe->info.va_bits instead of xe->info.dma_mask_size

BSpec: 47626
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Maarten Lankhorst <dev@lankhorst.se>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240130135648.30211-1-jose.souza@intel.com
parent 8945a46a

drivers/gpu/drm/xe/xe_device.c

+10 −0
Original line number Diff line number Diff line
@@ -747,3 +747,13 @@ void xe_device_snapshot_print(struct xe_device *xe, struct drm_printer *p) 
		drm_printf(p, "\tCS reference clock: %u\n", gt->info.reference_clock);

	}

}



u64 xe_device_canonicalize_addr(struct xe_device *xe, u64 address)

{

	return sign_extend64(address, xe->info.va_bits - 1);

}



u64 xe_device_uncanonicalize_addr(struct xe_device *xe, u64 address)

{

	return address & GENMASK_ULL(xe->info.va_bits - 1, 0);

}

drivers/gpu/drm/xe/xe_device.h

+3 −0
Original line number Diff line number Diff line
@@ -177,4 +177,7 @@ u32 xe_device_ccs_bytes(struct xe_device *xe, u64 size); 


void xe_device_snapshot_print(struct xe_device *xe, struct drm_printer *p);



u64 xe_device_canonicalize_addr(struct xe_device *xe, u64 address);

u64 xe_device_uncanonicalize_addr(struct xe_device *xe, u64 address);



#endif