AMD: Add PCIE reset method for Polaris 10.

src/amd/Makefile

@@ -2,6 +2,7 @@ vendor-reset-y += \
 	src/amd/common.o \
 	src/amd/compat.o \
 	src/amd/firmware.o \
+	src/amd/polaris10.o \
 	src/amd/vega10.o \
 	src/amd/vega20.o \
 	src/amd/navi10.o \
@@ -18,4 +19,5 @@ ccflags-y += \
 	-I$(src)/src/amd \
 	-I$(src)/src/amd/amdgpu \
 	-I$(src)/src/amd/amdgpu/include \
+	-I$(src)/src/amd/amdgpu/include/asic_reg \
 	$(foreach inc,$(wildcard $(src)/src/amd/amdgpu/include/asic_reg/*/.),-I$(dir $(inc)) )

src/amd/amd.h

@@ -16,6 +16,7 @@ this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 Place, Suite 330, Boston, MA 02111-1307 USA
 */
 
+extern struct vendor_reset_ops amd_polaris10_ops;
 extern struct vendor_reset_ops amd_vega10_ops;
 extern struct vendor_reset_ops amd_vega20_ops;
 extern struct vendor_reset_ops amd_navi10_ops;

src/amd/common.h

@@ -130,8 +130,15 @@ struct amd_vendor_private
   struct mutex smu_lock;
 };
 
-#define adev_to_amd_private(adev) ((struct amd_vendor_private *)container_of(adev, struct amd_vendor_private, adev))
-#define amd_private(vdev) ((struct amd_vendor_private *)(vdev->vendor_private))
+static inline struct amd_vendor_private *adev_to_amd_private(struct amd_fake_dev *adev)
+{
+  return container_of(adev, struct amd_vendor_private, adev);
+}
+
+static inline struct amd_vendor_private *amd_private(struct vendor_reset_dev *vdev)
+{
+  return vdev->vendor_private;
+}
 
 int amd_common_pre_reset(struct vendor_reset_dev *);
 int amd_common_post_reset(struct vendor_reset_dev *);

src/amd/polaris10.c

@@ -0,0 +1,86 @@
+/*
+Vendor Reset - Vendor Specific Reset
+Copyright (C) 2020 Geoffrey McRae <geoff@hostfission.com>
+Copyright (C) 2020 Adam Madsen <adam@ajmadsen.com>
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <linux/delay.h>
+
+#include "bif/bif_4_1_d.h"
+#include "atom-types.h"
+#include "atombios.h"
+#include "common.h"
+#include "compat.h"
+
+#define bios_scratch_reg_offset mmBIOS_SCRATCH_0
+#define AMDGPU_ASIC_RESET_DATA 0x39d5e86b /* from amdgpu.h */
+
+/* from vi.c */
+static int vi_gpu_pci_config_reset(struct amd_fake_dev *adev)
+{
+  u32 i;
+
+  dev_info(adev->dev, "GPU pci config reset\n");
+
+  /* reset */
+  pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
+
+  udelay(100);
+
+  /* wait for asic to come out of reset */
+  for (i = 0; i < 100000; i++)
+  {
+    if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff)
+    {
+      return 0;
+    }
+    udelay(1);
+  }
+  return -EINVAL;
+}
+
+static inline void amdgpu_atombios_scratch_regs_engine_hung(struct amd_fake_dev *adev, bool hung)
+{
+  u32 tmp;
+
+  tmp = RREG32(bios_scratch_reg_offset + 3);
+
+  if (hung)
+    tmp |= ATOM_S3_ASIC_GUI_ENGINE_HUNG;
+  else
+    tmp &= ~ATOM_S3_ASIC_GUI_ENGINE_HUNG;
+
+  WREG32(bios_scratch_reg_offset + 3, tmp);
+}
+
+static int amd_polaris10_reset(struct vendor_reset_dev *vdev)
+{
+  int ret = 0;
+  struct amd_vendor_private *priv = amd_private(vdev);
+  struct amd_fake_dev *adev = &priv->adev;
+
+  amdgpu_atombios_scratch_regs_engine_hung(adev, true);
+  ret = vi_gpu_pci_config_reset(adev);
+  amdgpu_atombios_scratch_regs_engine_hung(adev, false);
+
+  return ret;
+}
+
+const struct vendor_reset_ops amd_polaris10_ops = {
+    .pre_reset = amd_common_pre_reset,
+    .reset = amd_polaris10_reset,
+    .post_reset = amd_common_post_reset,
+};

src/device-db.h

@@ -20,6 +20,21 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 
 static struct vendor_reset_cfg vendor_reset_devices[] =
     {
+        /* AMD Polaris 10 */
+        {PCI_VENDOR_ID_ATI, 0x67C0, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C1, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C2, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C4, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C7, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67D0, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67DF, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C8, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67C9, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67CA, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67CC, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x67CF, &amd_vega10_ops},
+        {PCI_VENDOR_ID_ATI, 0x6FDF, &amd_vega10_ops},
+
         /* AMD Vega 10 */
         {PCI_VENDOR_ID_ATI, 0x6860, &amd_vega10_ops},
         {PCI_VENDOR_ID_ATI, 0x6861, &amd_vega10_ops},