Commit 9a30b04f authored by Michal Wajdeczko's avatar Michal Wajdeczko Committed by Rodrigo Vivi
Browse files

drm/xe/vf: Update LRC with memory based interrupts data 



When Memory Based Interrupts are used, the VF driver must provide
in the LRC the references to the Source and Status Report Pages.

Update the LRC according to the requirements.

Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20231214185955.1791-9-michal.wajdeczko@intel.com


Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
parent a6581ebe

drivers/gpu/drm/xe/xe_lrc.c

+24 −0
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ 
#include "xe_gt_printk.h"

#include "xe_hw_fence.h"

#include "xe_map.h"

#include "xe_memirq.h"

#include "xe_sriov.h"

#include "xe_vm.h"



#define CTX_VALID				(1 << 0)
@@ -532,6 +534,27 @@ static void set_context_control(u32 *regs, struct xe_hw_engine *hwe) 
	/* TODO: Timestamp */

}



static void set_memory_based_intr(u32 *regs, struct xe_hw_engine *hwe)

{

	struct xe_memirq *memirq = &gt_to_tile(hwe->gt)->sriov.vf.memirq;

	struct xe_device *xe = gt_to_xe(hwe->gt);



	if (!IS_SRIOV_VF(xe) || !xe_device_has_memirq(xe))

		return;



	regs[CTX_LRM_INT_MASK_ENABLE] = MI_LOAD_REGISTER_MEM |

					MI_LRI_LRM_CS_MMIO | MI_LRM_USE_GGTT;

	regs[CTX_INT_MASK_ENABLE_REG] = RING_IMR(0).addr;

	regs[CTX_INT_MASK_ENABLE_PTR] = xe_memirq_enable_ptr(memirq);



	regs[CTX_LRI_INT_REPORT_PTR] = MI_LOAD_REGISTER_IMM | MI_LRI_NUM_REGS(2) |

				       MI_LRI_LRM_CS_MMIO | MI_LRI_FORCE_POSTED;

	regs[CTX_INT_STATUS_REPORT_REG] = RING_INT_STATUS_RPT_PTR(0).addr;

	regs[CTX_INT_STATUS_REPORT_PTR] = xe_memirq_status_ptr(memirq);

	regs[CTX_INT_SRC_REPORT_REG] = RING_INT_SRC_RPT_PTR(0).addr;

	regs[CTX_INT_SRC_REPORT_PTR] = xe_memirq_source_ptr(memirq);

}



static int lrc_ring_mi_mode(struct xe_hw_engine *hwe)

{

	struct xe_device *xe = gt_to_xe(hwe->gt);
@@ -667,6 +690,7 @@ static void *empty_lrc_data(struct xe_hw_engine *hwe) 
	regs = data + LRC_PPHWSP_SIZE;

	set_offsets(regs, reg_offsets(xe, hwe->class), hwe);

	set_context_control(regs, hwe);

	set_memory_based_intr(regs, hwe);

	reset_stop_ring(regs, hwe);



	return data;