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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include "gt/intel_engine_pm.h"
#include "gt/intel_gpu_commands.h"
#include "gt/intel_gt.h"
#include "gt/intel_ring.h"
#include "intel_gsc_uc_heci_cmd_submit.h"
struct gsc_heci_pkt {
u64 addr_in;
u32 size_in;
u64 addr_out;
u32 size_out;
};
static int emit_gsc_heci_pkt(struct i915_request *rq, struct gsc_heci_pkt *pkt)
{
u32 *cs;
cs = intel_ring_begin(rq, 8);
if (IS_ERR(cs))
return PTR_ERR(cs);
*cs++ = GSC_HECI_CMD_PKT;
*cs++ = lower_32_bits(pkt->addr_in);
*cs++ = upper_32_bits(pkt->addr_in);
*cs++ = pkt->size_in;
*cs++ = lower_32_bits(pkt->addr_out);
*cs++ = upper_32_bits(pkt->addr_out);
*cs++ = pkt->size_out;
*cs++ = 0;
intel_ring_advance(rq, cs);
return 0;
}
int intel_gsc_uc_heci_cmd_submit_packet(struct intel_gsc_uc *gsc, u64 addr_in,
u32 size_in, u64 addr_out,
u32 size_out)
{
struct intel_context *ce = gsc->ce;
struct i915_request *rq;
struct gsc_heci_pkt pkt = {
.addr_in = addr_in,
.size_in = size_in,
.addr_out = addr_out,
.size_out = size_out
};
int err;
if (!ce)
return -ENODEV;
rq = i915_request_create(ce);
if (IS_ERR(rq))
return PTR_ERR(rq);
if (ce->engine->emit_init_breadcrumb) {
err = ce->engine->emit_init_breadcrumb(rq);
if (err)
goto out_rq;
}
err = emit_gsc_heci_pkt(rq, &pkt);
if (err)
goto out_rq;
err = ce->engine->emit_flush(rq, 0);
out_rq:
i915_request_get(rq);
if (unlikely(err))
i915_request_set_error_once(rq, err);
i915_request_add(rq);
if (!err && i915_request_wait(rq, 0, msecs_to_jiffies(500)) < 0)
err = -ETIME;
i915_request_put(rq);
if (err)
drm_err(&gsc_uc_to_gt(gsc)->i915->drm,
"Request submission for GSC heci cmd failed (%d)\n",
err);
return err;
}
void intel_gsc_uc_heci_cmd_emit_mtl_header(struct intel_gsc_mtl_header *header,
u8 heci_client_id, u32 message_size,
u64 host_session_id)
{
host_session_id &= ~HOST_SESSION_MASK;
if (heci_client_id == HECI_MEADDRESS_PXP)
host_session_id |= HOST_SESSION_PXP_SINGLE;
header->validity_marker = GSC_HECI_VALIDITY_MARKER;
header->heci_client_id = heci_client_id;
header->host_session_handle = host_session_id;
header->header_version = MTL_GSC_HEADER_VERSION;
header->message_size = message_size;
}
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