From 46d5d7669c06221a05f57d8c1556bf094dccebab Mon Sep 17 00:00:00 2001
From: Chun-Liang Chang <Chun-Liang.Chang@amd.com>
Date: Fri, 11 Jun 2021 11:05:20 +0800
Subject: drm/amd/display: DMUB Outbound Interrupt Process-X86
Git-commit: 556a979d3c50960acd96efded7801970bd989236
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
[Why]
dmub would notify x86 response time violation by GPINT_DATAOUT
[How]
1. Use GPINT_DATAOUT to trigger x86 interrupt
2. Register GPINT_DATAOUT interrupt handler.
3. Trigger ACR while GPINT_DATAOUT occurred.
Signed-off-by: Chun-Liang Chang <Chun-Liang.Chang@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/core/dc_stat.c | 24 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc_stat.h | 1 +
drivers/gpu/drm/amd/display/dc/irq_types.h | 2 +-
drivers/gpu/drm/amd/display/dmub/dmub_srv.h | 18 ++++++++++++++
.../gpu/drm/amd/display/dmub/src/dmub_dcn31.c | 15 ++++++++++++
.../gpu/drm/amd/display/dmub/src/dmub_dcn31.h | 10 ++++++--
.../gpu/drm/amd/display/dmub/src/dmub_srv.c | 17 +++++++++++++
.../include/asic_reg/dcn/dcn_3_1_2_sh_mask.h | 4 ++++
8 files changed, 88 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stat.c b/drivers/gpu/drm/amd/display/dc/core/dc_stat.c
index 31761f3595a6..28ef9760fa34 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stat.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stat.c
@@ -62,3 +62,27 @@ void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification
status = dmub_srv_stat_get_notification(dmub, notify);
ASSERT(status == DMUB_STATUS_OK);
}
+
+/**
+ *****************************************************************************
+ * Function: dc_stat_get_dmub_dataout
+ *
+ * @brief
+ * Calls dmub layer to retrieve dmub gpint dataout
+ *
+ * @param
+ * [in] dc: dc structure
+ * [in] dataout: dmub gpint dataout
+ *
+ * @return
+ * None
+ *****************************************************************************
+ */
+void dc_stat_get_dmub_dataout(const struct dc *dc, uint32_t *dataout)
+{
+ struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
+ enum dmub_status status;
+
+ status = dmub_srv_get_gpint_dataout(dmub, dataout);
+ ASSERT(status == DMUB_STATUS_OK);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stat.h b/drivers/gpu/drm/amd/display/dc/dc_stat.h
index 2a000ba54ddb..aacbfd786c6c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stat.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stat.h
@@ -38,5 +38,6 @@
#include "dmub/dmub_srv.h"
void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification *notify);
+void dc_stat_get_dmub_dataout(const struct dc *dc, uint32_t *dataout);
#endif /* _DC_STAT_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/irq_types.h b/drivers/gpu/drm/amd/display/dc/irq_types.h
index 1139b9eb9f6f..530c2578db40 100644
--- a/drivers/gpu/drm/amd/display/dc/irq_types.h
+++ b/drivers/gpu/drm/amd/display/dc/irq_types.h
@@ -152,7 +152,7 @@ enum dc_irq_source {
DC_IRQ_SOURCE_DC6_VLINE1,
DC_IRQ_SOURCE_DMCUB_OUTBOX,
DC_IRQ_SOURCE_DMCUB_OUTBOX0,
-
+ DC_IRQ_SOURCE_DMCUB_GENERAL_DATAOUT,
DAL_IRQ_SOURCES_NUMBER
};
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index abbf7ae584c9..caf961bb633f 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -352,6 +352,8 @@ struct dmub_srv_hw_funcs {
uint32_t (*get_gpint_response)(struct dmub_srv *dmub);
+ uint32_t (*get_gpint_dataout)(struct dmub_srv *dmub);
+
void (*send_inbox0_cmd)(struct dmub_srv *dmub, union dmub_inbox0_data_register data);
uint32_t (*get_current_time)(struct dmub_srv *dmub);
@@ -676,6 +678,22 @@ dmub_srv_send_gpint_command(struct dmub_srv *dmub,
enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub,
uint32_t *response);
+/**
+ * dmub_srv_get_gpint_dataout() - Queries the GPINT DATAOUT.
+ * @dmub: the dmub service
+ * @dataout: the data for the GPINT DATAOUT
+ *
+ * Returns the response code for the last GPINT DATAOUT interrupt.
+ *
+ * Can be called after software initialization.
+ *
+ * Return:
+ * DMUB_STATUS_OK - success
+ * DMUB_STATUS_INVALID - unspecified error
+ */
+enum dmub_status dmub_srv_get_gpint_dataout(struct dmub_srv *dmub,
+ uint32_t *dataout);
+
/**
* dmub_flush_buffer_mem() - Read back entire frame buffer region.
* This ensures that the write from x86 has been flushed and will not
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
index 27c7fa3110c8..50e8c0365200 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
@@ -307,6 +307,21 @@ uint32_t dmub_dcn31_get_gpint_response(struct dmub_srv *dmub)
return REG_READ(DMCUB_SCRATCH7);
}
+uint32_t dmub_dcn31_get_gpint_dataout(struct dmub_srv *dmub)
+{
+ uint32_t dataout = REG_READ(DMCUB_GPINT_DATAOUT);
+
+ REG_UPDATE(DMCUB_INTERRUPT_ENABLE, DMCUB_GPINT_IH_INT_EN, 0);
+
+ REG_WRITE(DMCUB_GPINT_DATAOUT, 0);
+ REG_UPDATE(DMCUB_INTERRUPT_ACK, DMCUB_GPINT_IH_INT_ACK, 1);
+ REG_UPDATE(DMCUB_INTERRUPT_ACK, DMCUB_GPINT_IH_INT_ACK, 0);
+
+ REG_UPDATE(DMCUB_INTERRUPT_ENABLE, DMCUB_GPINT_IH_INT_EN, 1);
+
+ return dataout;
+}
+
union dmub_fw_boot_status dmub_dcn31_get_fw_boot_status(struct dmub_srv *dmub)
{
union dmub_fw_boot_status status;
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
index 9456a6a2d518..bb62605d2ac8 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.h
@@ -114,7 +114,9 @@ struct dmub_srv;
DMUB_SR(DMCUB_TIMER_CURRENT) \
DMUB_SR(DMCUB_INST_FETCH_FAULT_ADDR) \
DMUB_SR(DMCUB_UNDEFINED_ADDRESS_FAULT_ADDR) \
- DMUB_SR(DMCUB_DATA_WRITE_FAULT_ADDR)
+ DMUB_SR(DMCUB_DATA_WRITE_FAULT_ADDR) \
+ DMUB_SR(DMCUB_INTERRUPT_ENABLE) \
+ DMUB_SR(DMCUB_INTERRUPT_ACK)
#define DMUB_DCN31_FIELDS() \
DMUB_SF(DMCUB_CNTL, DMCUB_ENABLE) \
@@ -147,7 +149,9 @@ struct dmub_srv;
DMUB_SF(MMHUBBUB_SOFT_RESET, DMUIF_SOFT_RESET) \
DMUB_SF(DCN_VM_FB_LOCATION_BASE, FB_BASE) \
DMUB_SF(DCN_VM_FB_OFFSET, FB_OFFSET) \
- DMUB_SF(DMCUB_INBOX0_WPTR, DMCUB_INBOX0_WPTR)
+ DMUB_SF(DMCUB_INBOX0_WPTR, DMCUB_INBOX0_WPTR) \
+ DMUB_SF(DMCUB_INTERRUPT_ENABLE, DMCUB_GPINT_IH_INT_EN) \
+ DMUB_SF(DMCUB_INTERRUPT_ACK, DMCUB_GPINT_IH_INT_ACK)
struct dmub_srv_dcn31_reg_offset {
#define DMUB_SR(reg) uint32_t reg;
@@ -222,6 +226,8 @@ bool dmub_dcn31_is_gpint_acked(struct dmub_srv *dmub,
uint32_t dmub_dcn31_get_gpint_response(struct dmub_srv *dmub);
+uint32_t dmub_dcn31_get_gpint_dataout(struct dmub_srv *dmub);
+
void dmub_dcn31_enable_dmub_boot_options(struct dmub_srv *dmub, const struct dmub_srv_hw_params *params);
void dmub_dcn31_skip_dmub_panel_power_sequence(struct dmub_srv *dmub, bool skip);
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index 2bdbd7406f56..75a91cfaf036 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -224,6 +224,7 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
funcs->set_gpint = dmub_dcn31_set_gpint;
funcs->is_gpint_acked = dmub_dcn31_is_gpint_acked;
funcs->get_gpint_response = dmub_dcn31_get_gpint_response;
+ funcs->get_gpint_dataout = dmub_dcn31_get_gpint_dataout;
funcs->get_fw_status = dmub_dcn31_get_fw_boot_status;
funcs->enable_dmub_boot_options = dmub_dcn31_enable_dmub_boot_options;
funcs->skip_dmub_panel_power_sequence = dmub_dcn31_skip_dmub_panel_power_sequence;
@@ -719,6 +720,22 @@ enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub,
return DMUB_STATUS_OK;
}
+enum dmub_status dmub_srv_get_gpint_dataout(struct dmub_srv *dmub,
+ uint32_t *dataout)
+{
+ *dataout = 0;
+
+ if (!dmub->sw_init)
+ return DMUB_STATUS_INVALID;
+
+ if (!dmub->hw_funcs.get_gpint_dataout)
+ return DMUB_STATUS_INVALID;
+
+ *dataout = dmub->hw_funcs.get_gpint_dataout(dmub);
+
+ return DMUB_STATUS_OK;
+}
+
enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub,
union dmub_fw_boot_status *status)
{
diff --git a/drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_3_1_2_sh_mask.h b/drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_3_1_2_sh_mask.h
index e5fd0121ceff..a9d553ef26c0 100644
--- a/drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_3_1_2_sh_mask.h
+++ b/drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_3_1_2_sh_mask.h
@@ -5971,6 +5971,7 @@
#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT1_INT_EN__SHIFT 0xb
#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT2_INT_EN__SHIFT 0xc
#define DMCUB_INTERRUPT_ENABLE__DMCUB_UNDEFINED_ADDRESS_FAULT_INT_EN__SHIFT 0xd
+#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT_IH_INT_EN__SHIFT 0x11
#define DMCUB_INTERRUPT_ENABLE__DMCUB_TIMER0_INT_EN_MASK 0x00000001L
#define DMCUB_INTERRUPT_ENABLE__DMCUB_TIMER1_INT_EN_MASK 0x00000002L
#define DMCUB_INTERRUPT_ENABLE__DMCUB_INBOX0_READY_INT_EN_MASK 0x00000004L
@@ -5985,6 +5986,7 @@
#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT1_INT_EN_MASK 0x00000800L
#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT2_INT_EN_MASK 0x00001000L
#define DMCUB_INTERRUPT_ENABLE__DMCUB_UNDEFINED_ADDRESS_FAULT_INT_EN_MASK 0x00002000L
+#define DMCUB_INTERRUPT_ENABLE__DMCUB_GPINT_IH_INT_EN_MASK 0x00020000L
//DMCUB_INTERRUPT_ACK
#define DMCUB_INTERRUPT_ACK__DMCUB_TIMER0_INT_ACK__SHIFT 0x0
#define DMCUB_INTERRUPT_ACK__DMCUB_TIMER1_INT_ACK__SHIFT 0x1
@@ -6000,6 +6002,7 @@
#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT1_INT_ACK__SHIFT 0xb
#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT2_INT_ACK__SHIFT 0xc
#define DMCUB_INTERRUPT_ACK__DMCUB_UNDEFINED_ADDRESS_FAULT_ACK__SHIFT 0xd
+#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT_IH_INT_ACK__SHIFT 0x11
#define DMCUB_INTERRUPT_ACK__DMCUB_TIMER0_INT_ACK_MASK 0x00000001L
#define DMCUB_INTERRUPT_ACK__DMCUB_TIMER1_INT_ACK_MASK 0x00000002L
#define DMCUB_INTERRUPT_ACK__DMCUB_INBOX0_READY_INT_ACK_MASK 0x00000004L
@@ -6014,6 +6017,7 @@
#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT1_INT_ACK_MASK 0x00000800L
#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT2_INT_ACK_MASK 0x00001000L
#define DMCUB_INTERRUPT_ACK__DMCUB_UNDEFINED_ADDRESS_FAULT_ACK_MASK 0x00002000L
+#define DMCUB_INTERRUPT_ACK__DMCUB_GPINT_IH_INT_ACK_MASK 0x00020000L
//DMCUB_INTERRUPT_STATUS
#define DMCUB_INTERRUPT_STATUS__DMCUB_TIMER0_INT_STAT__SHIFT 0x0
#define DMCUB_INTERRUPT_STATUS__DMCUB_TIMER1_INT_STAT__SHIFT 0x1
--
2.38.1