diff options
| -rw-r--r-- | drivers/gpu/drm/i915/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c | 94 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h | 45 |
4 files changed, 142 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index a59937b2b431..4bfc22f81592 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -195,6 +195,7 @@ i915-y += \ i915-y += \ gt/uc/intel_gsc_fw.o \ gt/uc/intel_gsc_uc.o \ + gt/uc/intel_gsc_uc_heci_cmd_submit.o\ gt/uc/intel_guc.o \ gt/uc/intel_guc_ads.o \ gt/uc/intel_guc_capture.o \ diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h index 2af1ae3831df..454179884801 100644 --- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h +++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h @@ -439,6 +439,8 @@ #define GSC_FW_LOAD GSC_INSTR(1, 0, 2) #define HECI1_FW_LIMIT_VALID (1 << 31) +#define GSC_HECI_CMD_PKT GSC_INSTR(0, 0, 6) + /* * Used to convert any address to canonical form. * Starting from gen8, some commands (e.g. STATE_BASE_ADDRESS, diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c new file mode 100644 index 000000000000..be2424af521d --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c @@ -0,0 +1,94 @@ +// 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; +} diff --git a/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h new file mode 100644 index 000000000000..cf610dfca7a5 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef _INTEL_GSC_UC_HECI_CMD_SUBMIT_H_ +#define _INTEL_GSC_UC_HECI_CMD_SUBMIT_H_ + +#include <linux/types.h> + +struct intel_gsc_uc; +struct intel_gsc_mtl_header { + u32 validity_marker; +#define GSC_HECI_VALIDITY_MARKER 0xA578875A + + u8 heci_client_id; +#define HECI_MEADDRESS_PXP 17 +#define HECI_MEADDRESS_HDCP 18 + + u8 reserved1; + + u16 header_version; +#define MTL_GSC_HEADER_VERSION 1 + + u64 host_session_handle; + u64 gsc_message_handle; + + u32 message_size; /* lower 20 bits only, upper 12 are reserved */ + + /* + * Flags mask: + * Bit 0: Pending + * Bit 1: Session Cleanup; + * Bits 2-15: Flags + * Bits 16-31: Extension Size + */ + u32 flags; + + u32 status; +} __packed; + +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); +#endif |