From c4266a9c7b0ee66b3d1ca22745d8eb9472e21b4b Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 1 Oct 2015 11:36:58 +1000
Subject: [PATCH] drm/nouveau/pci/nv46: attempt to fix msi, and re-enable by
 default

Was not able to obtain a trace of NVRM due to kernel version annoyances,
however, experimentally confirmed that the WAR we use on NV50/G8x boards
works here too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
 drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h    |  2 +-
 drivers/gpu/drm/nouveau/nvkm/engine/device/base.c    |  4 ++--
 drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild       |  2 +-
 drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c        |  2 +-
 .../drm/nouveau/nvkm/subdev/pci/{nv50.c => nv46.c}   | 12 ++++++------
 drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h       |  2 +-
 6 files changed, 12 insertions(+), 12 deletions(-)
 rename drivers/gpu/drm/nouveau/nvkm/subdev/pci/{nv50.c => nv46.c} (84%)

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h
index 9c0b5e1605dce..39ca88f36df9e 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h
@@ -28,8 +28,8 @@ void nvkm_pci_rom_shadow(struct nvkm_pci *, bool shadow);
 
 int nv04_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int nv40_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+int nv46_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int nv4c_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
-int nv50_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int g84_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int g94_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int gf100_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 727e18e0acd0e..2cff79cf683d9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -637,7 +637,7 @@ nv46_chipset = {
 	.imem = nv40_instmem_new,
 	.mc = nv44_mc_new,
 	.mmu = nv44_mmu_new,
-	.pci = nv4c_pci_new,
+	.pci = nv46_pci_new,
 	.therm = nv40_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -822,7 +822,7 @@ nv50_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
-	.pci = nv50_pci_new,
+	.pci = nv46_pci_new,
 	.therm = nv50_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild
index 85cb52501ada0..4476ef75acd64 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild
@@ -2,8 +2,8 @@ nvkm-y += nvkm/subdev/pci/agp.o
 nvkm-y += nvkm/subdev/pci/base.o
 nvkm-y += nvkm/subdev/pci/nv04.o
 nvkm-y += nvkm/subdev/pci/nv40.o
+nvkm-y += nvkm/subdev/pci/nv46.o
 nvkm-y += nvkm/subdev/pci/nv4c.o
-nvkm-y += nvkm/subdev/pci/nv50.o
 nvkm-y += nvkm/subdev/pci/g84.o
 nvkm-y += nvkm/subdev/pci/g94.o
 nvkm-y += nvkm/subdev/pci/gf100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c
index 30be277edf2a5..8f3b00199d143 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c
@@ -30,7 +30,7 @@ g84_pci_func = {
 	.rd32 = nv40_pci_rd32,
 	.wr08 = nv40_pci_wr08,
 	.wr32 = nv40_pci_wr32,
-	.msi_rearm = nv50_pci_msi_rearm,
+	.msi_rearm = nv46_pci_msi_rearm,
 };
 
 int
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c
similarity index 84%
rename from drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c
rename to drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c
index 027481519ff9c..fc617e4c0ab6f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv46.c
@@ -25,11 +25,11 @@
 
 #include <core/pci.h>
 
-/* MSI re-arm through the PRI appears to be broken on NV50/G84/G86/G92,
+/* MSI re-arm through the PRI appears to be broken on NV46/NV50/G84/G86/G92,
  * so we access it via alternate PCI config space mechanisms.
  */
 void
-nv50_pci_msi_rearm(struct nvkm_pci *pci)
+nv46_pci_msi_rearm(struct nvkm_pci *pci)
 {
 	struct nvkm_device *device = pci->subdev.device;
 	struct pci_dev *pdev = device->func->pci(device)->pdev;
@@ -37,15 +37,15 @@ nv50_pci_msi_rearm(struct nvkm_pci *pci)
 }
 
 static const struct nvkm_pci_func
-nv50_pci_func = {
+nv46_pci_func = {
 	.rd32 = nv40_pci_rd32,
 	.wr08 = nv40_pci_wr08,
 	.wr32 = nv40_pci_wr32,
-	.msi_rearm = nv50_pci_msi_rearm,
+	.msi_rearm = nv46_pci_msi_rearm,
 };
 
 int
-nv50_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+nv46_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
 {
-	return nvkm_pci_new_(&nv50_pci_func, device, index, ppci);
+	return nvkm_pci_new_(&nv46_pci_func, device, index, ppci);
 }
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
index 68ce8e554ae90..473b8ab253513 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
@@ -18,5 +18,5 @@ void nv40_pci_wr08(struct nvkm_pci *, u16, u8);
 void nv40_pci_wr32(struct nvkm_pci *, u16, u32);
 void nv40_pci_msi_rearm(struct nvkm_pci *);
 
-void nv50_pci_msi_rearm(struct nvkm_pci *);
+void nv46_pci_msi_rearm(struct nvkm_pci *);
 #endif
-- 
2.30.2