From: Michal Wajdeczko michal.wajdeczko@intel.com
Definition of the CTB registration action has changed. Add some ABI documentation and implement required changes.
Signed-off-by: Michal Wajdeczko michal.wajdeczko@intel.com Signed-off-by: Matthew Brost matthew.brost@intel.com Cc: Piotr Piórkowski piotr.piorkowski@intel.com #4 --- .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 107 ++++++++++++++++++ .../gt/uc/abi/guc_communication_ctb_abi.h | 4 - drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 76 ++++++++----- 3 files changed, 152 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h index 90efef8a73e4..6426fc183692 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h @@ -6,6 +6,113 @@ #ifndef _ABI_GUC_ACTIONS_ABI_H #define _ABI_GUC_ACTIONS_ABI_H
+/** + * DOC: HOST2GUC_REGISTER_CTB + * + * This message is used as part of the `CTB based communication`_ setup. + * + * This message must be sent as `MMIO HXG Message`_. + * + * +---+-------+--------------------------------------------------------------+ + * | | Bits | Description | + * +===+=======+==============================================================+ + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_HOST_ | + * | +-------+--------------------------------------------------------------+ + * | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ | + * | +-------+--------------------------------------------------------------+ + * | | 27:16 | DATA0 = MBZ | + * | +-------+--------------------------------------------------------------+ + * | | 15:0 | ACTION = _`GUC_ACTION_HOST2GUC_REGISTER_CTB` = 0x5200 | + * +---+-------+--------------------------------------------------------------+ + * | 1 | 31:12 | RESERVED = MBZ | + * | +-------+--------------------------------------------------------------+ + * | | 11:8 | **TYPE** - type for the `CT Buffer`_ | + * | | | | + * | | | - _`GUC_CTB_TYPE_HOST2GUC` = 0 | + * | | | - _`GUC_CTB_TYPE_GUC2HOST` = 1 | + * | +-------+--------------------------------------------------------------+ + * | | 7:0 | **SIZE** - size of the `CT Buffer`_ in 4K units minus 1 | + * +---+-------+--------------------------------------------------------------+ + * | 2 | 31:0 | **DESC_ADDR** - GGTT address of the `CTB Descriptor`_ | + * +---+-------+--------------------------------------------------------------+ + * | 3 | 31:0 | **BUFF_ADDF** - GGTT address of the `CT Buffer`_ | + * +---+-------+--------------------------------------------------------------+ +* + * +---+-------+--------------------------------------------------------------+ + * | | Bits | Description | + * +===+=======+==============================================================+ + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_GUC_ | + * | +-------+--------------------------------------------------------------+ + * | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_ | + * | +-------+--------------------------------------------------------------+ + * | | 27:0 | DATA0 = MBZ | + * +---+-------+--------------------------------------------------------------+ + */ +#define GUC_ACTION_HOST2GUC_REGISTER_CTB 0x4505 // FIXME 0x5200 + +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN (GUC_HXG_REQUEST_MSG_MIN_LEN + 3u) +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_0_MBZ GUC_HXG_REQUEST_MSG_0_DATA0 +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_MBZ (0xfffff << 12) +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE (0xf << 8) +#define GUC_CTB_TYPE_HOST2GUC 0u +#define GUC_CTB_TYPE_GUC2HOST 1u +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE (0xff << 0) +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR GUC_HXG_REQUEST_MSG_n_DATAn +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR GUC_HXG_REQUEST_MSG_n_DATAn + +#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_LEN GUC_HXG_RESPONSE_MSG_MIN_LEN +#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_0_MBZ GUC_HXG_RESPONSE_MSG_0_DATA0 + +/** + * DOC: HOST2GUC_DEREGISTER_CTB + * + * This message is used as part of the `CTB based communication`_ teardown. + * + * This message must be sent as `MMIO HXG Message`_. + * + * +---+-------+--------------------------------------------------------------+ + * | | Bits | Description | + * +===+=======+==============================================================+ + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_HOST_ | + * | +-------+--------------------------------------------------------------+ + * | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ | + * | +-------+--------------------------------------------------------------+ + * | | 27:16 | DATA0 = MBZ | + * | +-------+--------------------------------------------------------------+ + * | | 15:0 | ACTION = _`GUC_ACTION_HOST2GUC_DEREGISTER_CTB` = 0x5201 | + * +---+-------+--------------------------------------------------------------+ + * | 1 | 31:12 | RESERVED = MBZ | + * | +-------+--------------------------------------------------------------+ + * | | 11:8 | **TYPE** - type of the `CT Buffer`_ | + * | | | | + * | | | see `GUC_ACTION_HOST2GUC_REGISTER_CTB`_ | + * | +-------+--------------------------------------------------------------+ + * | | 7:0 | RESERVED = MBZ | + * +---+-------+--------------------------------------------------------------+ +* + * +---+-------+--------------------------------------------------------------+ + * | | Bits | Description | + * +===+=======+==============================================================+ + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_GUC_ | + * | +-------+--------------------------------------------------------------+ + * | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_ | + * | +-------+--------------------------------------------------------------+ + * | | 27:0 | DATA0 = MBZ | + * +---+-------+--------------------------------------------------------------+ + */ +#define GUC_ACTION_HOST2GUC_DEREGISTER_CTB 0x4506 // FIXME 0x5201 + +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN (GUC_HXG_REQUEST_MSG_MIN_LEN + 1u) +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_0_MBZ GUC_HXG_REQUEST_MSG_0_DATA0 +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ (0xfffff << 12) +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE (0xf << 8) +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ2 (0xff << 0) + +#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_LEN GUC_HXG_RESPONSE_MSG_MIN_LEN +#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_0_MBZ GUC_HXG_RESPONSE_MSG_0_DATA0 + +/* legacy definitions */ + enum intel_guc_action { INTEL_GUC_ACTION_DEFAULT = 0x0, INTEL_GUC_ACTION_REQUEST_PREEMPTION = 0x2, diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h index c2a069a78e01..127b256a662c 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h @@ -112,10 +112,6 @@ static_assert(sizeof(struct guc_ct_buffer_desc) == 64); * - **flags**, holds various bits to control message handling */
-/* Type of command transport buffer */ -#define INTEL_GUC_CT_BUFFER_TYPE_SEND 0x0u -#define INTEL_GUC_CT_BUFFER_TYPE_RECV 0x1u - /* * Definition of the command transport message header (DW0) * diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index 3241a477196f..6a29be779cc9 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -103,9 +103,9 @@ void intel_guc_ct_init_early(struct intel_guc_ct *ct) static inline const char *guc_ct_buffer_type_to_str(u32 type) { switch (type) { - case INTEL_GUC_CT_BUFFER_TYPE_SEND: + case GUC_CTB_TYPE_HOST2GUC: return "SEND"; - case INTEL_GUC_CT_BUFFER_TYPE_RECV: + case GUC_CTB_TYPE_GUC2HOST: return "RECV"; default: return "<invalid>"; @@ -136,25 +136,33 @@ static void guc_ct_buffer_init(struct intel_guc_ct_buffer *ctb, guc_ct_buffer_reset(ctb); }
-static int guc_action_register_ct_buffer(struct intel_guc *guc, - u32 desc_addr, - u32 type) +static int guc_action_register_ct_buffer(struct intel_guc *guc, u32 type, + u32 desc_addr, u32 buff_addr, u32 size) { - u32 action[] = { - INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER, - desc_addr, - sizeof(struct guc_ct_buffer_desc), - type + u32 request[HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN] = { + FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) | + FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) | + FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, GUC_ACTION_HOST2GUC_REGISTER_CTB), + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE, size / SZ_4K - 1) | + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE, type), + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR, desc_addr), + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR, buff_addr), };
- /* Can't use generic send(), CT registration must go over MMIO */ - return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); + GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != GUC_CTB_TYPE_GUC2HOST); + GEM_BUG_ON(size % SZ_4K); + + /* CT registration must go over MMIO */ + return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0); }
-static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type) +static int ct_register_buffer(struct intel_guc_ct *ct, u32 type, + u32 desc_addr, u32 buff_addr, u32 size) { - int err = guc_action_register_ct_buffer(ct_to_guc(ct), desc_addr, type); + int err;
+ err = guc_action_register_ct_buffer(ct_to_guc(ct), type, + desc_addr, buff_addr, size); if (unlikely(err)) CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n", guc_ct_buffer_type_to_str(type), err); @@ -163,14 +171,17 @@ static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type)
static int guc_action_deregister_ct_buffer(struct intel_guc *guc, u32 type) { - u32 action[] = { - INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER, - CTB_OWNER_HOST, - type + u32 request[HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN] = { + FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) | + FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) | + FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, GUC_ACTION_HOST2GUC_DEREGISTER_CTB), + FIELD_PREP(HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE, type), };
- /* Can't use generic send(), CT deregistration must go over MMIO */ - return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); + GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != GUC_CTB_TYPE_GUC2HOST); + + /* CT deregistration must go over MMIO */ + return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0); }
static int ct_deregister_buffer(struct intel_guc_ct *ct, u32 type) @@ -258,7 +269,7 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct) int intel_guc_ct_enable(struct intel_guc_ct *ct) { struct intel_guc *guc = ct_to_guc(ct); - u32 base, cmds; + u32 base, desc, cmds; void *blob; int err;
@@ -274,23 +285,26 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) GEM_BUG_ON(blob != ct->ctbs.send.desc);
/* (re)initialize descriptors */ - cmds = base + ptrdiff(ct->ctbs.send.cmds, blob); guc_ct_buffer_reset(&ct->ctbs.send); - - cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob); guc_ct_buffer_reset(&ct->ctbs.recv);
/* * Register both CT buffers starting with RECV buffer. * Descriptors are in first half of the blob. */ - err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.recv.desc, blob), - INTEL_GUC_CT_BUFFER_TYPE_RECV); + desc = base + ptrdiff(ct->ctbs.recv.desc, blob); + cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob); + err = ct_register_buffer(ct, GUC_CTB_TYPE_GUC2HOST, + desc, cmds, ct->ctbs.recv.size * 4); + if (unlikely(err)) goto err_out;
- err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.send.desc, blob), - INTEL_GUC_CT_BUFFER_TYPE_SEND); + desc = base + ptrdiff(ct->ctbs.send.desc, blob); + cmds = base + ptrdiff(ct->ctbs.send.cmds, blob); + err = ct_register_buffer(ct, GUC_CTB_TYPE_HOST2GUC, + desc, cmds, ct->ctbs.send.size * 4); + if (unlikely(err)) goto err_deregister;
@@ -299,7 +313,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) return 0;
err_deregister: - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); + ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST); err_out: CT_PROBE_ERROR(ct, "Failed to enable CTB (%pe)\n", ERR_PTR(err)); return err; @@ -318,8 +332,8 @@ void intel_guc_ct_disable(struct intel_guc_ct *ct) ct->enabled = false;
if (intel_guc_is_fw_running(guc)) { - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_SEND); - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); + ct_deregister_buffer(ct, GUC_CTB_TYPE_HOST2GUC); + ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST); } }