From: Eric Huang <JinHuiEric.Huang@amd.com>
Date: Fri, 15 Sep 2017 16:38:49 -0400
Subject: drm/amd/powerplay: add register thermal interrupt in hwmgr_hw_init
Git-commit: 2a5b64c9fcd7adf6133e76966250ef3ab139f98b
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c |   75 +++++++++++++++++++++++++++-
 drivers/gpu/drm/amd/powerplay/inc/hwmgr.h   |    6 ++
 2 files changed, 80 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c
@@ -26,8 +26,8 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/types.h>
+#include <linux/pci.h>
 #include <drm/amdgpu_drm.h>
-#include "cgs_common.h"
 #include "power_state.h"
 #include "hwmgr.h"
 #include "pppcielanes.h"
@@ -51,6 +51,75 @@ uint8_t convert_to_vid(uint16_t vddc)
 	return (uint8_t) ((6200 - (vddc * VOLTAGE_SCALE)) / 25);
 }
 
+static int phm_get_pci_bus_devfn(struct pp_hwmgr *hwmgr,
+		struct cgs_system_info *sys_info)
+{
+	sys_info->size = sizeof(struct cgs_system_info);
+	sys_info->info_id = CGS_SYSTEM_INFO_PCIE_BUS_DEVFN;
+
+	return cgs_query_system_info(hwmgr->device, sys_info);
+}
+
+static int phm_thermal_l2h_irq(void *private_data,
+		 unsigned src_id, const uint32_t *iv_entry)
+{
+	struct pp_hwmgr *hwmgr = (struct pp_hwmgr *)private_data;
+	struct cgs_system_info sys_info = {0};
+	int result;
+
+	result = phm_get_pci_bus_devfn(hwmgr, &sys_info);
+	if (result)
+		return -EINVAL;
+
+	pr_warn("GPU over temperature range detected on PCIe %lld:%lld.%lld!\n",
+			PCI_BUS_NUM(sys_info.value),
+			PCI_SLOT(sys_info.value),
+			PCI_FUNC(sys_info.value));
+	return 0;
+}
+
+static int phm_thermal_h2l_irq(void *private_data,
+		 unsigned src_id, const uint32_t *iv_entry)
+{
+	struct pp_hwmgr *hwmgr = (struct pp_hwmgr *)private_data;
+	struct cgs_system_info sys_info = {0};
+	int result;
+
+	result = phm_get_pci_bus_devfn(hwmgr, &sys_info);
+	if (result)
+		return -EINVAL;
+
+	pr_warn("GPU under temperature range detected on PCIe %lld:%lld.%lld!\n",
+			PCI_BUS_NUM(sys_info.value),
+			PCI_SLOT(sys_info.value),
+			PCI_FUNC(sys_info.value));
+	return 0;
+}
+
+static int phm_ctf_irq(void *private_data,
+		 unsigned src_id, const uint32_t *iv_entry)
+{
+	struct pp_hwmgr *hwmgr = (struct pp_hwmgr *)private_data;
+	struct cgs_system_info sys_info = {0};
+	int result;
+
+	result = phm_get_pci_bus_devfn(hwmgr, &sys_info);
+	if (result)
+		return -EINVAL;
+
+	pr_warn("GPU Critical Temperature Fault detected on PCIe %lld:%lld.%lld!\n",
+			PCI_BUS_NUM(sys_info.value),
+			PCI_SLOT(sys_info.value),
+			PCI_FUNC(sys_info.value));
+	return 0;
+}
+
+static const struct cgs_irq_src_funcs thermal_irq_src[3] = {
+	{NULL, phm_thermal_l2h_irq},
+	{NULL, phm_thermal_h2l_irq},
+	{NULL, phm_ctf_irq}
+};
+
 int hwmgr_early_init(struct pp_instance *handle)
 {
 	struct pp_hwmgr *hwmgr;
@@ -179,6 +248,10 @@ int hwmgr_hw_init(struct pp_instance *ha
 	if (ret)
 		goto err2;
 
+	ret = phm_register_thermal_interrupt(hwmgr, &thermal_irq_src);
+	if (ret)
+		goto err2;
+
 	return 0;
 err2:
 	if (hwmgr->hwmgr_func->backend_fini)
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -32,6 +32,7 @@
 #include "ppatomctrl.h"
 #include "hwmgr_ppt.h"
 #include "power_state.h"
+#include "cgs_linux.h"
 
 struct pp_instance;
 struct pp_hwmgr;
@@ -746,6 +747,11 @@ struct pp_hwmgr {
 	bool en_umd_pstate;
 };
 
+struct cgs_irq_src_funcs {
+	cgs_irq_source_set_func_t set;
+	cgs_irq_handler_func_t handler;
+};
+
 extern int hwmgr_early_init(struct pp_instance *handle);
 extern int hwmgr_hw_init(struct pp_instance *handle);
 extern int hwmgr_hw_fini(struct pp_instance *handle);