Commit 5e372663 authored by Matthew Brost's avatar Matthew Brost Committed by Rodrigo Vivi
Browse files

drm/xe/guc: Add support GuC MMIO send / recv 



SRIOV has a use case of GuC MMIO send / recv, add a function for it.

Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Reviewed-by: default avatarPhilippe Lecluse <philippe.lecluse1@gmail.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent f900725a

drivers/gpu/drm/xe/xe_guc.c

+17 −1
Original line number Diff line number Diff line
@@ -630,7 +630,8 @@ int xe_guc_auth_huc(struct xe_guc *guc, u32 rsa_addr) 
#define MEDIA_SOFT_SCRATCH(n)           _MMIO(0x190310 + (n) * 4)

#define MEDIA_SOFT_SCRATCH_COUNT        4



int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len)

int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request,

			  u32 len, u32 *response_buf)

{

	struct xe_device *xe = guc_to_xe(guc);

	struct xe_gt *gt = guc_to_gt(guc);
@@ -640,6 +641,7 @@ int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len) 
	int ret;

	int i;



	BUILD_BUG_ON(GEN11_SOFT_SCRATCH_COUNT != MEDIA_SOFT_SCRATCH_COUNT);

	XE_BUG_ON(guc->ct.enabled);

	XE_BUG_ON(!len);

	XE_BUG_ON(len > GEN11_SOFT_SCRATCH_COUNT);
@@ -723,10 +725,24 @@ int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len) 
		return -EPROTO;

	}



	/* Just copy entire possible message response */

	if (response_buf) {

		response_buf[0] = header;



		for (i = 1; i < GEN11_SOFT_SCRATCH_COUNT; i++)

			response_buf[i] =

				xe_mmio_read32(gt, reply_reg + i * sizeof(u32));

	}



	/* Use data from the GuC response as our return value */

	return FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, header);

}



int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len)

{

	return xe_guc_mmio_send_recv(guc, request, len, NULL);

}



static int guc_self_cfg(struct xe_guc *guc, u16 key, u16 len, u64 val)

{

	u32 request[HOST2GUC_SELF_CFG_REQUEST_MSG_LEN] = {

drivers/gpu/drm/xe/xe_guc.h

+2 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ int xe_guc_suspend(struct xe_guc *guc); 
void xe_guc_notify(struct xe_guc *guc);

int xe_guc_auth_huc(struct xe_guc *guc, u32 rsa_addr);

int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len);

int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request, u32 len,

			  u32 *response_buf);

int xe_guc_self_cfg32(struct xe_guc *guc, u16 key, u32 val);

int xe_guc_self_cfg64(struct xe_guc *guc, u16 key, u64 val);

void xe_guc_irq_handler(struct xe_guc *guc, const u16 iir);