drm/nouveau/pci/g84: split implementation from nv50

An upcoming patch will implement functionality that we don't use on the
original NV50.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/subdev/pci.h

@@ -30,5 +30,6 @@ int nv04_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 int nv40_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 gf100_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

@@ -929,7 +929,7 @@ nv84_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
-	.pci = nv50_pci_new,
+	.pci = g84_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -961,7 +961,7 @@ nv86_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
-	.pci = nv50_pci_new,
+	.pci = g84_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,
@@ -993,7 +993,7 @@ nv92_chipset = {
 	.mc = nv50_mc_new,
 	.mmu = nv50_mmu_new,
 	.mxm = nv50_mxm_new,
-	.pci = nv50_pci_new,
+	.pci = g84_pci_new,
 	.therm = g84_therm_new,
 	.timer = nv41_timer_new,
 	.volt = nv40_volt_new,

drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild

@@ -4,4 +4,5 @@ nvkm-y += nvkm/subdev/pci/nv04.o
 nvkm-y += nvkm/subdev/pci/nv40.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/gf100.o

drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c

+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+#include <core/pci.h>
+
+static const struct nvkm_pci_func
+g84_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = nv50_pci_msi_rearm,
+};
+
+int
+g84_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&g84_pci_func, device, index, ppci);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv50.c

@@ -25,10 +25,10 @@
 
 #include <core/pci.h>
 
-/* MSI re-arm through the PRI appears to be broken on the original G80,
+/* MSI re-arm through the PRI appears to be broken on NV50/G84/G86/G92,
  * so we access it via alternate PCI config space mechanisms.
  */
-static void
+void
 nv50_pci_msi_rearm(struct nvkm_pci *pci)
 {
 	struct nvkm_device *device = pci->subdev.device;

drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h

@@ -16,4 +16,6 @@ struct nvkm_pci_func {
 u32 nv40_pci_rd32(struct nvkm_pci *, u16);
 void nv40_pci_wr08(struct nvkm_pci *, u16, u8);
 void nv40_pci_wr32(struct nvkm_pci *, u16, u32);
+
+void nv50_pci_msi_rearm(struct nvkm_pci *);
 #endif