drm/nouveau/pci: new subdev

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/core/device.h

@@ -4,6 +4,7 @@
 #include <core/object.h>
 
 enum nvkm_devidx {
+	NVKM_SUBDEV_PCI,
 	NVKM_SUBDEV_VBIOS,
 	NVKM_SUBDEV_DEVINIT,
 	NVKM_SUBDEV_IBUS,
@@ -108,6 +109,7 @@ struct nvkm_device {
 	struct nvkm_mc *mc;
 	struct nvkm_mmu *mmu;
 	struct nvkm_subdev *mxm;
+	struct nvkm_pci *pci;
 	struct nvkm_pmu *pmu;
 	struct nvkm_therm *therm;
 	struct nvkm_timer *timer;
@@ -168,6 +170,7 @@ struct nvkm_device_chip {
 	int (*mc     )(struct nvkm_device *, int idx, struct nvkm_mc **);
 	int (*mmu    )(struct nvkm_device *, int idx, struct nvkm_mmu **);
 	int (*mxm    )(struct nvkm_device *, int idx, struct nvkm_subdev **);
+	int (*pci    )(struct nvkm_device *, int idx, struct nvkm_pci **);
 	int (*pmu    )(struct nvkm_device *, int idx, struct nvkm_pmu **);
 	int (*therm  )(struct nvkm_device *, int idx, struct nvkm_therm **);
 	int (*timer  )(struct nvkm_device *, int idx, struct nvkm_timer **);

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

@@ -0,0 +1,21 @@
+#ifndef __NVKM_PCI_H__
+#define __NVKM_PCI_H__
+#include <core/subdev.h>
+
+struct nvkm_pci {
+	const struct nvkm_pci_func *func;
+	struct nvkm_subdev subdev;
+};
+
+u32 nvkm_pci_rd32(struct nvkm_pci *, u16 addr);
+void nvkm_pci_wr08(struct nvkm_pci *, u16 addr, u8 data);
+void nvkm_pci_wr32(struct nvkm_pci *, u16 addr, u32 data);
+void nvkm_pci_rom_shadow(struct nvkm_pci *, bool shadow);
+void nvkm_pci_msi_rearm(struct nvkm_pci *);
+
+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 gf100_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
+#endif

drivers/gpu/drm/nouveau/nvkm/core/subdev.c

@@ -44,6 +44,7 @@ nvkm_subdev_name[NVKM_SUBDEV_NR] = {
 	[NVKM_SUBDEV_MC     ] = "mc",
 	[NVKM_SUBDEV_MMU    ] = "mmu",
 	[NVKM_SUBDEV_MXM    ] = "mxm",
+	[NVKM_SUBDEV_PCI    ] = "pci",
 	[NVKM_SUBDEV_PMU    ] = "pmu",
 	[NVKM_SUBDEV_THERM  ] = "therm",
 	[NVKM_SUBDEV_TIMER  ] = "tmr",

drivers/gpu/drm/nouveau/nvkm/engine/device/priv.h

@@ -17,6 +17,7 @@
 #include <subdev/mc.h>
 #include <subdev/mmu.h>
 #include <subdev/mxm.h>
+#include <subdev/pci.h>
 #include <subdev/pmu.h>
 #include <subdev/therm.h>
 #include <subdev/timer.h>

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

@@ -13,6 +13,7 @@ include $(src)/nvkm/subdev/ltc/Kbuild
 include $(src)/nvkm/subdev/mc/Kbuild
 include $(src)/nvkm/subdev/mmu/Kbuild
 include $(src)/nvkm/subdev/mxm/Kbuild
+include $(src)/nvkm/subdev/pci/Kbuild
 include $(src)/nvkm/subdev/pmu/Kbuild
 include $(src)/nvkm/subdev/therm/Kbuild
 include $(src)/nvkm/subdev/timer/Kbuild

drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c

@@ -22,6 +22,8 @@
  */
 #include "priv.h"
 
+#include <subdev/pci.h>
+
 static u32
 prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
 {
@@ -39,23 +41,16 @@ static void
 prom_fini(void *data)
 {
 	struct nvkm_device *device = data;
-	if (device->card_type < NV_50)
-		nvkm_mask(device, 0x001850, 0x00000001, 0x00000001);
-	else
-		nvkm_mask(device, 0x088050, 0x00000001, 0x00000001);
+	nvkm_pci_rom_shadow(device->pci, true);
 }
 
 static void *
 prom_init(struct nvkm_bios *bios, const char *name)
 {
 	struct nvkm_device *device = bios->subdev.device;
-	if (device->card_type < NV_50) {
-		if (device->card_type == NV_40 && device->chipset >= 0x4c)
-			return ERR_PTR(-ENODEV);
-		nvkm_mask(device, 0x001850, 0x00000001, 0x00000000);
-	} else {
-		nvkm_mask(device, 0x088050, 0x00000001, 0x00000000);
-	}
+	if (device->card_type == NV_40 && device->chipset >= 0x4c)
+		return ERR_PTR(-ENODEV);
+	nvkm_pci_rom_shadow(device->pci, false);
 	return device;
 }
 

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

@@ -0,0 +1,6 @@
+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/nv4c.o
+nvkm-y += nvkm/subdev/pci/nv50.o
+nvkm-y += nvkm/subdev/pci/gf100.o

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

@@ -0,0 +1,82 @@
+/*
+ * 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"
+
+u32
+nvkm_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	return pci->func->rd32(pci, addr);
+}
+
+void
+nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	pci->func->wr08(pci, addr, data);
+}
+
+void
+nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	pci->func->wr32(pci, addr, data);
+}
+
+void
+nvkm_pci_rom_shadow(struct nvkm_pci *pci, bool shadow)
+{
+	u32 data = nvkm_pci_rd32(pci, 0x0050);
+	if (shadow)
+		data |=  0x00000001;
+	else
+		data &= ~0x00000001;
+	nvkm_pci_wr32(pci, 0x0050, data);
+}
+
+void
+nvkm_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	pci->func->msi_rearm(pci);
+}
+
+static void *
+nvkm_pci_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_pci(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_pci_func = {
+	.dtor = nvkm_pci_dtor,
+};
+
+int
+nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_pci **ppci)
+{
+	struct nvkm_pci *pci;
+	if (!(pci = *ppci = kzalloc(sizeof(**ppci), GFP_KERNEL)))
+		return -ENOMEM;
+	nvkm_subdev_ctor(&nvkm_pci_func, device, index, 0, &pci->subdev);
+	pci->func = func;
+	return 0;
+}

drivers/gpu/drm/nouveau/nvkm/subdev/pci/gf100.c

@@ -0,0 +1,44 @@
+/*
+ * 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"
+
+static void
+gf100_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	nvkm_pci_wr08(pci, 0x0704, 0xff);
+}
+
+static const struct nvkm_pci_func
+gf100_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = gf100_pci_msi_rearm,
+};
+
+int
+gf100_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&gf100_pci_func, device, index, ppci);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv04.c

@@ -0,0 +1,58 @@
+/*
+ * 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"
+
+static u32
+nv04_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	return nvkm_rd32(device, 0x001800 + addr);
+}
+
+static void
+nv04_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr08(device, 0x001800 + addr, data);
+}
+
+static void
+nv04_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr32(device, 0x001800 + addr, data);
+}
+
+static const struct nvkm_pci_func
+nv04_pci_func = {
+	.rd32 = nv04_pci_rd32,
+	.wr08 = nv04_pci_wr08,
+	.wr32 = nv04_pci_wr32,
+};
+
+int
+nv04_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv04_pci_func, device, index, ppci);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv40.c

@@ -0,0 +1,65 @@
+/*
+ * 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"
+
+u32
+nv40_pci_rd32(struct nvkm_pci *pci, u16 addr)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	return nvkm_rd32(device, 0x088000 + addr);
+}
+
+void
+nv40_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr08(device, 0x088000 + addr, data);
+}
+
+void
+nv40_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	nvkm_wr32(device, 0x088000 + addr, data);
+}
+
+static void
+nv40_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	nvkm_pci_wr08(pci, 0x0068, 0xff);
+}
+
+static const struct nvkm_pci_func
+nv40_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = nv40_pci_msi_rearm,
+};
+
+int
+nv40_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv40_pci_func, device, index, ppci);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv4c.c

@@ -0,0 +1,37 @@
+/*
+ * 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"
+
+static const struct nvkm_pci_func
+nv4c_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+};
+
+int
+nv4c_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv4c_pci_func, device, index, ppci);
+}

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

@@ -0,0 +1,51 @@
+/*
+ * 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>
+
+/* MSI re-arm through the PRI appears to be broken on the original G80,
+ * so we access it via alternate PCI config space mechanisms.
+ */
+static void
+nv50_pci_msi_rearm(struct nvkm_pci *pci)
+{
+	struct nvkm_device *device = pci->subdev.device;
+	struct pci_dev *pdev = device->func->pci(device)->pdev;
+	pci_write_config_byte(pdev, 0x68, 0xff);
+}
+
+static const struct nvkm_pci_func
+nv50_pci_func = {
+	.rd32 = nv40_pci_rd32,
+	.wr08 = nv40_pci_wr08,
+	.wr32 = nv40_pci_wr32,
+	.msi_rearm = nv50_pci_msi_rearm,
+};
+
+int
+nv50_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
+{
+	return nvkm_pci_new_(&nv50_pci_func, device, index, ppci);
+}

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

@@ -0,0 +1,19 @@
+#ifndef __NVKM_PCI_PRIV_H__
+#define __NVKM_PCI_PRIV_H__
+#define nvkm_pci(p) container_of((p), struct nvkm_pci, subdev)
+#include <subdev/pci.h>
+
+int nvkm_pci_new_(const struct nvkm_pci_func *, struct nvkm_device *,
+		  int index, struct nvkm_pci **);
+
+struct nvkm_pci_func {
+	u32 (*rd32)(struct nvkm_pci *, u16 addr);
+	void (*wr08)(struct nvkm_pci *, u16 addr, u8 data);
+	void (*wr32)(struct nvkm_pci *, u16 addr, u32 data);
+	void (*msi_rearm)(struct nvkm_pci *);
+};
+
+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);
+#endif