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Emil Velikov

2012-May-20 23:14 UTC

[Nouveau] nouveau_subdev & misc patches

Hello all, this series includes a wide range of fixes - from a few
month's old one-liners from Andreas Heider regarding vga_switcheroo, via a
null pointer dereference and double memory allocation, to a buffer overflow.

Please review and comment

---
 drivers/gpu/drm/nouveau/nouveau_acpi.c   |    3 ++-
 drivers/gpu/drm/nouveau/nouveau_device.c |   26 +++++++++++++++-----------
 drivers/gpu/drm/nouveau/nouveau_fb.h     |    1 -
 drivers/gpu/drm/nouveau/nouveau_gpio.h   |    3 ---
 drivers/gpu/drm/nouveau/nouveau_gpuobj.c |   12 ++++--------
 drivers/gpu/drm/nouveau/nouveau_perf.c   |    2 +-
 drivers/gpu/drm/nouveau/nouveau_pm.c     |    6 +++---
 drivers/gpu/drm/nouveau/nouveau_state.c  |    2 ++
 drivers/gpu/drm/nouveau/nouveau_therm.c  |   63
+++++++++++++++++++++++++++++++++++++++++++++++++--------------
 drivers/gpu/drm/nouveau/nv04_instmem.c   |    3 +--
 drivers/gpu/drm/nouveau/nv10_fb.c        |    4 ----
 drivers/gpu/drm/nouveau/nv10_gpio.c      |   16 ++++++++--------
 drivers/gpu/drm/nouveau/nv30_fb.c        |    3 +--
 drivers/gpu/drm/nouveau/nv40_fanpwm.c    |   14 +++++++-------
 drivers/gpu/drm/nouveau/nv40_fb.c        |   11 ++++-------
 drivers/gpu/drm/nouveau/nv50_bar.c       |    2 --
 drivers/gpu/drm/nouveau/nv50_fanpwm.c    |   20 ++++++++++----------
 drivers/gpu/drm/nouveau/nv50_gpio.c      |   16 ++++++++--------
 drivers/gpu/drm/nouveau/nv50_instmem.c   |   10 +++-------
 drivers/gpu/drm/nouveau/nvc0_instmem.c   |   10 +++-------
 drivers/gpu/drm/nouveau/nvd0_gpio.c      |   16 ++++++++--------
 21 files changed, 129 insertions(+), 114 deletions(-)

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 01/14] drm/nouveau: Check dsm on switcheroo unregister

From: Andreas Heider <andreas at meetr.de>

Currently vga_switcheroo_unregister_handler is called unconditionally when
nouveau is unloaded, even when nouveau never registered a handler. This
interferes with other switcheroo handlers, as vga_switcheroo doesn't check
who
called unregister_handler, but simply unregisters the current handler. This
patch adds a check so unregister is only called if a handler was registered by
nouveau before.

Signed-off-by: Andreas Heider <andreas at meetr.de>
---
v2: Rebased on top of master

 drivers/gpu/drm/nouveau/nouveau_acpi.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c
b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index 0156d83..38a85b3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -338,7 +338,8 @@ void nouveau_switcheroo_optimus_dsm(void)
 
 void nouveau_unregister_dsm_handler(void)
 {
-	vga_switcheroo_unregister_handler();
+	if (nouveau_dsm_priv.optimus_detected || nouveau_dsm_priv.dsm_detected)
+		vga_switcheroo_unregister_handler();
 }
 
 /* retrieve the ROM in 4k blocks */
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 02/14] drm/nouveau: Unregister switcheroo client on exit

From: Andreas Heider <andreas at meetr.de>

Currently nouveau only registers as a vga_switcheroo client, but never
unregisters. This patch adds the necessary unregister calls.

Signed-off-by: Andreas Heider <andreas at meetr.de>
---
v2: Rebased on top of master

 drivers/gpu/drm/nouveau/nouveau_state.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c
b/drivers/gpu/drm/nouveau/nouveau_state.c
index 1a70d07..b84db66 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -344,6 +344,7 @@ out_device_init:
 out_display_early:
 	engine->display.late_takedown(ndev);
 out:
+	vga_switcheroo_unregister_client(dev->pdev);
 	vga_client_register(dev->pdev, NULL, NULL, NULL);
 	return ret;
 }
@@ -387,6 +388,7 @@ static void nouveau_card_takedown(struct nouveau_device
*ndev)
 
 	nouveau_irq_fini(ndev);
 
+	vga_switcheroo_unregister_client(dev->pdev);
 	vga_client_register(dev->pdev, NULL, NULL, NULL);
 }
 
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 03/14] drm/nouveau/device: Simplify init, fini fuction

Removes unnecessary goto statement
fini subdevices before destroying them

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_device.c |   26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_device.c
b/drivers/gpu/drm/nouveau/nouveau_device.c
index 9cc21d1..38ed71a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_device.c
+++ b/drivers/gpu/drm/nouveau/nouveau_device.c
@@ -55,13 +55,13 @@ nouveau_device_init(struct nouveau_device *ndev)
 
 	for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
 		ret = nouveau_subdev_init(ndev, i, 0);
-		if (ret)
-			goto error;
+		if (ret) {
+			for (--i; i >= 0; i--)
+				nouveau_subdev_fini(ndev, i, false);
+			break;
+		}
 	}
 
-error:
-	for (--i; ret && i >= 0; i--)
-		nouveau_subdev_fini(ndev, i, false);
 	return ret;
 }
 
@@ -72,13 +72,13 @@ nouveau_device_fini(struct nouveau_device *ndev, bool
suspend)
 
 	for (i = NVDEV_SUBDEV_NR - 1; i >= 0; i--) {
 		ret = nouveau_subdev_fini(ndev, i, suspend);
-		if (ret)
-			goto error;
+		if (ret) {
+			for (--i; i >= 0; i--)
+				nouveau_subdev_init(ndev, i, 0);
+			break;
+		}
 	}
 
-error:
-	for (--i; ret && i >= 0; i--)
-		nouveau_subdev_init(ndev, i, 0);
 	return ret;
 }
 
@@ -96,6 +96,7 @@ nouveau_device_create(struct nouveau_device *ndev)
 {
 	int disable = nouveau_noaccel;
 	int ret = 0;
+	int i;
 
 	/* mask out any engines that are known not to work as they should,
 	 * these can be overridden by the user
@@ -553,7 +554,10 @@ nouveau_device_create(struct nouveau_device *ndev)
 		break;
 	}
 
-	if (ret)
+	if (ret) {
+		for (i = NVDEV_SUBDEV_NR - 1; i >= 0; i--)
+			nouveau_subdev_fini(ndev, i, false);
 		nouveau_device_destroy(ndev);
+	}
 	return ret;
 }
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 04/14] drm/nouveau: Remove non-relevant function prototypes

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_fb.h   |    1 -
 drivers/gpu/drm/nouveau/nouveau_gpio.h |    3 ---
 2 files changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_fb.h
b/drivers/gpu/drm/nouveau/nouveau_fb.h
index b804fd0..5f62743 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fb.h
+++ b/drivers/gpu/drm/nouveau/nouveau_fb.h
@@ -37,7 +37,6 @@ void nv30_fb_free_tile_region(struct nouveau_fb *, int i);
 int  nv40_fb_create(struct nouveau_device *, int);
 
 int  nv50_fb_create(struct nouveau_device *, int);
-void nv50_fb_vram_fini(struct nouveau_fb *);
 void nv50_fb_vram_del(struct nouveau_fb *, struct nouveau_mem **);
 void nv50_fb_vm_trap(struct nouveau_device *, int display);
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_gpio.h
b/drivers/gpu/drm/nouveau/nouveau_gpio.h
index 1814c19..5bd66e8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gpio.h
+++ b/drivers/gpu/drm/nouveau/nouveau_gpio.h
@@ -53,9 +53,6 @@ struct gpio_func {
 
 /* nouveau_gpio.c */
 int  nouveau_gpio_create(struct nouveau_device *, int subdev);
-void nouveau_gpio_destroy(struct nouveau_device *);
-int  nouveau_gpio_init(struct nouveau_device *);
-void nouveau_gpio_fini(struct nouveau_device *);
 void nouveau_gpio_reset(struct nouveau_device *);
 int  nouveau_gpio_drive(struct nouveau_device *, int idx, int line,
 			int dir, int out);
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 05/14] drm/nouveau/gpuobj: Do not handle gpuobj_init during fail path in gpuobj_fini

This approach is already handled by the subdev system. Remove
unneeded variable in the process

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_gpuobj.c |   12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_gpuobj.c
b/drivers/gpu/drm/nouveau/nouveau_gpuobj.c
index 2eed5c3..43a7cd2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gpuobj.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gpuobj.c
@@ -757,7 +757,7 @@ nouveau_gpuobj_fini(struct nouveau_device *ndev, int subdev,
bool suspend)
 {
 	struct nouveau_gpuobj_priv *priv = nv_subdev(ndev, subdev);
 	struct nouveau_gpuobj *gpuobj;
-	int i, ret = 0;
+	int i;
 
 	if (suspend) {
 		list_for_each_entry(gpuobj, &priv->list, list) {
@@ -766,8 +766,7 @@ nouveau_gpuobj_fini(struct nouveau_device *ndev, int subdev,
bool suspend)
 
 			gpuobj->suspend = vmalloc(gpuobj->size);
 			if (!gpuobj->suspend) {
-				ret = -ENOMEM;
-				goto error;
+				return -ENOMEM;
 			}
 
 			for (i = 0; i < gpuobj->size; i += 4)
@@ -775,16 +774,13 @@ nouveau_gpuobj_fini(struct nouveau_device *ndev, int
subdev, bool suspend)
 		}
 	}
 
-error:
-	if (ret)
-		priv->base.init(ndev, subdev);
-	return ret;
+	return 0;
 }
 
 static void
 nouveau_gpuobj_destroy(struct nouveau_device *ndev, int subdev)
 {
-	struct nouveau_gpuobj_priv *priv = nv_subdev(ndev, NVDEV_SUBDEV_GPUOBJ);
+	struct nouveau_gpuobj_priv *priv = nv_subdev(ndev, subdev);
 	struct nouveau_gpuobj_method *om, *tm;
 	struct nouveau_gpuobj_class *oc, *tc;
 
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 06/14] drm/nouveau/instmem: Do not handle instmem_init during fail path in instmem_fini

This approach is already handled by the subdev system. Remove
unneeded variable in the process

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv50_instmem.c |   10 +++-------
 drivers/gpu/drm/nouveau/nvc0_instmem.c |   10 +++-------
 2 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_instmem.c
b/drivers/gpu/drm/nouveau/nv50_instmem.c
index f954e87..79e78d0 100644
--- a/drivers/gpu/drm/nouveau/nv50_instmem.c
+++ b/drivers/gpu/drm/nouveau/nv50_instmem.c
@@ -201,7 +201,7 @@ static int
 nv50_instmem_init(struct nouveau_device *ndev, int subdev)
 {
 	struct nv50_instmem_priv *priv = nv_subdev(ndev, subdev);
-	int ret = 0, i;
+	int i;
 
 	nv_wr32(ndev, 0x001700, priv->mem->offset >> 16);
 
@@ -224,15 +224,11 @@ nv50_instmem_init(struct nouveau_device *ndev, int subdev)
 	for (i = 0; i < 64 * 1024; i += 4) {
 		if (nv_rd32(ndev, 0x705000 + i) != nv_ri32(ndev, i)) {
 			NV_ERROR(ndev, "INSTMEM: readback failed\n");
-			ret = -EIO;
-			goto error;
+			return -EIO;
 		}
 	}
 
-error:
-	if (ret)
-		priv->base.base.fini(ndev, subdev, false);
-	return ret;
+	return 0;
 }
 
 int
diff --git a/drivers/gpu/drm/nouveau/nvc0_instmem.c
b/drivers/gpu/drm/nouveau/nvc0_instmem.c
index 2df078b..59e28f7 100644
--- a/drivers/gpu/drm/nouveau/nvc0_instmem.c
+++ b/drivers/gpu/drm/nouveau/nvc0_instmem.c
@@ -107,7 +107,7 @@ static int
 nvc0_instmem_init(struct nouveau_device *ndev, int subdev)
 {
 	struct nvc0_instmem_priv *priv = nv_subdev(ndev, subdev);
-	int ret = 0, i;
+	int i;
 
 	nv_wr32(ndev, 0x001700, priv->mem->offset >> 16);
 
@@ -128,15 +128,11 @@ nvc0_instmem_init(struct nouveau_device *ndev, int subdev)
 	for (i = 0; i < 64 * 1024; i += 4) {
 		if (nv_rd32(ndev, 0x702000 + i) != nv_ri32(ndev, i)) {
 			NV_ERROR(ndev, "INSTMEM: readback failed\n");
-			ret = -EIO;
-			goto error;
+			return -EIO;
 		}
 	}
 
-error:
-	if (ret)
-		priv->base.base.fini(ndev, subdev, false);
-	return ret;
+	return 0;
 }
 
 int
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 07/14] drm/nouveau/volt: Purge volt->get and volt->set checks

Both functions are constantly present if the volt subdev is created

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_pm.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c
b/drivers/gpu/drm/nouveau/nouveau_pm.c
index b6bde18..9dd34fe 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -60,7 +60,7 @@ nouveau_pm_perflvl_aux(struct nouveau_device *ndev, struct
nouveau_pm_level *per
 		}
 	}
 
-	if (pvolt && pvolt->set) {
+	if (pvolt) {
 		if (perflvl->volt_min && b->volt_min > a->volt_min) {
 			ret = pvolt->set(pvolt, perflvl->volt_min);
 			if (ret) {
@@ -234,7 +234,7 @@ nouveau_pm_perflvl_get(struct nouveau_device *ndev, struct
nouveau_pm_level *per
 			return ret;
 	}
 
-	if (pvolt && pvolt->get) {
+	if (pvolt) {
 		ret = pvolt->get(pvolt);
 		if (ret > 0) {
 			perflvl->volt_min = ret;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 08/14] drm/nv50_bar: Remove duplicate assignments

Both variables are already set in nouveau_subdev_create()

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv50_bar.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_bar.c
b/drivers/gpu/drm/nouveau/nv50_bar.c
index 0dc1895..6499a30 100644
--- a/drivers/gpu/drm/nouveau/nv50_bar.c
+++ b/drivers/gpu/drm/nouveau/nv50_bar.c
@@ -92,8 +92,6 @@ nv50_bar_create(struct nouveau_device *ndev, int subdev)
 	if (ret)
 		return ret;
 
-	priv->base.base.name = "BAR";
-	priv->base.base.device = ndev;
 	priv->base.base.destroy = nv50_bar_destroy;
 	priv->base.base.init = nv50_bar_init;
 	priv->base.map = nv50_bar_map;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 09/14] drm/nv04_instmem: Remove duplicate assignment

The variable is already set in nouveau_subdev_create()

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv04_instmem.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nv04_instmem.c
b/drivers/gpu/drm/nouveau/nv04_instmem.c
index 362b23f..47d70fe 100644
--- a/drivers/gpu/drm/nouveau/nv04_instmem.c
+++ b/drivers/gpu/drm/nouveau/nv04_instmem.c
@@ -108,7 +108,6 @@ nv04_instmem_create(struct nouveau_device *ndev, int subdev)
 	if (ret)
 		return ret;
 
-	priv->base.base.device = ndev;
 	priv->base.base.destroy = nv04_instmem_destroy;
 	priv->base.get = nv04_instmem_get;
 	priv->base.put = nv04_instmem_put;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:14 UTC

head link

[Nouveau] [PATCH 10/14] drm/nv30_fb: Purge optional variable

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv30_fb.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv30_fb.c
b/drivers/gpu/drm/nouveau/nv30_fb.c
index ce08f08..bc1c65b 100644
--- a/drivers/gpu/drm/nouveau/nv30_fb.c
+++ b/drivers/gpu/drm/nouveau/nv30_fb.c
@@ -113,7 +113,6 @@ nv30_fb_init(struct nouveau_device *ndev, int subdev)
 int
 nv30_fb_create(struct nouveau_device *ndev, int subdev)
 {
-	u32 mem_size = nv_rd32(ndev, 0x10020c);
 	u32 pbus1218 = nv_rd32(ndev, 0x001218);
 	struct nv30_fb_priv *priv;
 	int ret;
@@ -128,7 +127,7 @@ nv30_fb_create(struct nouveau_device *ndev, int subdev)
 	case 0x00000200: ndev->vram_type = NV_MEM_TYPE_GDDR3; break;
 	case 0x00000300: ndev->vram_type = NV_MEM_TYPE_GDDR2; break;
 	}
-	ndev->vram_size = mem_size & 0xff000000;
+	ndev->vram_size = nv_rd32(ndev, 0x10020c) & 0xff000000;
 
 	priv->base.base.destroy = nv10_fb_destroy;
 	priv->base.base.init = nv30_fb_init;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:15 UTC

head link

[Nouveau] [PATCH 11/14] drm/nv40/fb: Blend if statement within the switch

No functional change, just bike-shedding

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv40_fb.c |   11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv40_fb.c
b/drivers/gpu/drm/nouveau/nv40_fb.c
index 879678b..4f2d436 100644
--- a/drivers/gpu/drm/nouveau/nv40_fb.c
+++ b/drivers/gpu/drm/nouveau/nv40_fb.c
@@ -107,13 +107,6 @@ nv40_fb_init(struct nouveau_device *ndev, int subdev)
 	u32 tmp;
 	int i;
 
-	if (ndev->chipset != 0x40 && ndev->chipset != 0x45) {
-		if (nv44_graph_class(ndev))
-			nv44_fb_init_gart(ndev);
-		else
-			nv40_fb_init_gart(ndev);
-	}
-
 	switch (ndev->chipset) {
 	case 0x40:
 	case 0x45:
@@ -121,6 +114,10 @@ nv40_fb_init(struct nouveau_device *ndev, int subdev)
 		nv_wr32(ndev, NV10_PFB_CLOSE_PAGE2, tmp & ~(1 << 15));
 		break;
 	default:
+		if (nv44_graph_class(ndev))
+			nv44_fb_init_gart(ndev);
+		else
+			nv40_fb_init_gart(ndev);
 		break;
 	}
 
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:15 UTC

head link

[Nouveau] [PATCH 12/14] drm/nv10/fb: Prevent double memory allocation

Appropriate memory is allocated in nouveau_subdev_create()

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nv10_fb.c |    4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv10_fb.c
b/drivers/gpu/drm/nouveau/nv10_fb.c
index a886098..80b3e41 100644
--- a/drivers/gpu/drm/nouveau/nv10_fb.c
+++ b/drivers/gpu/drm/nouveau/nv10_fb.c
@@ -132,10 +132,6 @@ nv10_fb_create(struct nouveau_device *ndev, int subdev)
 		ndev->vram_size = data & NV10_PFB_FIFO_DATA_RAM_AMOUNT_MB_MASK;
 	}
 
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
 	priv->base.base.destroy = nv10_fb_destroy;
 	priv->base.base.init = nv10_fb_init;
 	priv->base.memtype_valid = nv04_fb_memtype_valid;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:15 UTC

head link

[Nouveau] [PATCH 13/14] drm/nouveau/perf: Prevent buffer oveflow

If the vbios is corrupted it can indicate more performance entries than the
ones statically allocated, causing overwriting of kernel memory

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_perf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_perf.c
b/drivers/gpu/drm/nouveau/nouveau_perf.c
index af03fb4..36a9ae3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_perf.c
+++ b/drivers/gpu/drm/nouveau/nouveau_perf.c
@@ -61,7 +61,7 @@ nouveau_perf_entry(struct nouveau_device *ndev, int idx,
 		   u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
 {
 	u8 *perf = nouveau_perf_table(ndev, ver);
-	if (perf) {
+	if (perf && idx < NOUVEAU_PM_MAX_LEVEL) {
 		if (*ver >= 0x12 && *ver < 0x20 && idx < perf[2]) {
 			*hdr = perf[3];
 			*cnt = 0;
-- 
1.7.10.2

Emil Velikov

2012-May-20 23:15 UTC

head link

[Nouveau] [PATCH 14/14] drm/nouveau/therm: Rework nouveau_therm_create()

It contains a few changes mainly targeting the following
 * Therm table is present in BIT vbios
 * Parse the vbios table before hooking temp_get(), as it contains the therm
sensor calibration data
 * Add dummy_therm_temp_get() function to prevent multiple null dereff's

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_pm.c    |    2 +-
 drivers/gpu/drm/nouveau/nouveau_therm.c |   63 ++++++++++++++++++++++++-------
 2 files changed, 50 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c
b/drivers/gpu/drm/nouveau/nouveau_pm.c
index 9dd34fe..1b4422b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -693,7 +693,7 @@ nouveau_hwmon_init(struct nouveau_device *ndev)
 	}
 
 	/* if the card can read the fan rpm */
-	if (nouveau_gpio_func_valid(ndev, DCB_GPIO_FAN_SENSE)) {
+	if (pfan && pfan->sense(pfan) >= 0) {
 		ret = sysfs_create_group(&dev->pdev->dev.kobj,
 					 &hwmon_fan_rpm_attrgroup);
 		if (ret)
diff --git a/drivers/gpu/drm/nouveau/nouveau_therm.c
b/drivers/gpu/drm/nouveau/nouveau_therm.c
index acf81a9..91095be 100644
--- a/drivers/gpu/drm/nouveau/nouveau_therm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_therm.c
@@ -30,6 +30,12 @@
 #include "nouveau_pm.h"
 #include "nouveau_therm.h"
 
+static inline int
+dummy_therm_temp_get(struct nouveau_therm *ptherm)
+{
+	return 0;
+}
+
 static int
 nv40_sensor_setup(struct nouveau_therm *ptherm)
 {
@@ -181,7 +187,7 @@ nouveau_therm_vbios_parse(struct nouveau_therm *ptherm, u8
*temp)
 	temp = temp + headerlen;
 
 	/* Read the entries from the table */
-	for (i = 0; i < entries; i++) {
+	for (i = 0; i < entries; i++, temp += recordlen) {
 		s16 value = ROM16(temp[1]);
 
 		switch (temp[0]) {
@@ -228,7 +234,6 @@ nouveau_therm_vbios_parse(struct nouveau_therm *ptherm, u8
*temp)
 			ptherm->fan.pwm_freq = value;
 			break;
 		}
-		temp += recordlen;
 	}
 
 	nouveau_therm_safety_checks(ptherm);
@@ -299,6 +304,12 @@ nouveau_therm_probe_i2c(struct nouveau_device *ndev)
 			     probe_monitoring_device, NV_I2C_DEFAULT(0));
 }
 
+static void
+nouveau_ptherm_destroy(struct nouveau_device *ndev, int subdev)
+{
+// XXX: Undo probe_monitoring_device
+}
+
 int
 nouveau_therm_create(struct nouveau_device *ndev, int subdev)
 {
@@ -307,29 +318,53 @@ nouveau_therm_create(struct nouveau_device *ndev, int
subdev)
 	u8 *temp = NULL;
 	int ret;
 
-	ret = nouveau_subdev_create(ndev, subdev, "THERM",
"thermal", &ptherm);
-	if (ret)
-		return ret;
+	if (bios->type == NVBIOS_BIT) {
+		if (bit_table(ndev, 'P', &P))
+			return 0;
 
-	if (ndev->chipset >= 0x40 && ndev->chipset < 0x84)
-		ptherm->temp_get = nv40_therm_temp_get;
-	else
-	if (ndev->chipset <= 0xd9)
-		ptherm->temp_get = nv84_therm_temp_get;
-
-	if (bit_table(ndev, 'P', &P) == 0) {
 		if (P.version == 1)
 			temp = ROMPTR(ndev, P.data[12]);
 		else
 		if (P.version == 2)
 			temp = ROMPTR(ndev, P.data[16]);
-		else
+		else {
 			NV_WARN(ndev, "unknown temp for BIT P %d\n", P.version);
+		}
+	} else {
+		return 0;
+	}
 
-		nouveau_therm_vbios_parse(ptherm, temp);
+	if (!temp) {
+		NV_DEBUG(ndev, "temp table pointer invalid\n");
+		return 0;
 	}
 
+	ret = nouveau_subdev_create(ndev, subdev, "THERM",
"thermal", &ptherm);
+	if (ret)
+		return ret;
+
+	nouveau_therm_vbios_parse(ptherm, temp);
 	nouveau_therm_probe_i2c(ndev);
 
+	ptherm->base.destroy = nouveau_ptherm_destroy;
+	switch (ndev->card_type) {
+	case NV_40:
+	case NV_50:
+	case NV_C0:
+	case NV_D0:
+	case NV_E0:
+		if (ndev->chipset < 0x84) {
+			ptherm->temp_get = nv40_therm_temp_get;
+			break;
+		} else
+		if (ndev->chipset <= 0xd9) {
+			ptherm->temp_get = nv84_therm_temp_get;
+			break;
+		}
+	default:
+		ptherm->temp_get = dummy_therm_temp_get;
+		break;
+	}
+
 	return nouveau_subdev_init(ndev, subdev, ret);
 }
-- 
1.7.10.2

Ben Skeggs

2012-May-21 06:25 UTC

head link

[Nouveau] nouveau_subdev & misc patches

On Mon, May 21, 2012 at 12:14:49AM +0100, Emil Velikov
wrote:> Hello all, this series includes a wide range of fixes - from a few
> month's old one-liners from Andreas Heider regarding vga_switcheroo,
via a
> null pointer dereference and double memory allocation, to a buffer
overflow.Hey,

Thanks for these!  I've pulled most of them directly for the moment,
comments
on specific patches will follow.

Cheers,
Ben.
> 
> Please review and comment
> 
> ---
>  drivers/gpu/drm/nouveau/nouveau_acpi.c   |    3 ++-
>  drivers/gpu/drm/nouveau/nouveau_device.c |   26 +++++++++++++++-----------
>  drivers/gpu/drm/nouveau/nouveau_fb.h     |    1 -
>  drivers/gpu/drm/nouveau/nouveau_gpio.h   |    3 ---
>  drivers/gpu/drm/nouveau/nouveau_gpuobj.c |   12 ++++--------
>  drivers/gpu/drm/nouveau/nouveau_perf.c   |    2 +-
>  drivers/gpu/drm/nouveau/nouveau_pm.c     |    6 +++---
>  drivers/gpu/drm/nouveau/nouveau_state.c  |    2 ++
>  drivers/gpu/drm/nouveau/nouveau_therm.c  |   63
+++++++++++++++++++++++++++++++++++++++++++++++++--------------
>  drivers/gpu/drm/nouveau/nv04_instmem.c   |    3 +--
>  drivers/gpu/drm/nouveau/nv10_fb.c        |    4 ----
>  drivers/gpu/drm/nouveau/nv10_gpio.c      |   16 ++++++++--------
>  drivers/gpu/drm/nouveau/nv30_fb.c        |    3 +--
>  drivers/gpu/drm/nouveau/nv40_fanpwm.c    |   14 +++++++-------
>  drivers/gpu/drm/nouveau/nv40_fb.c        |   11 ++++-------
>  drivers/gpu/drm/nouveau/nv50_bar.c       |    2 --
>  drivers/gpu/drm/nouveau/nv50_fanpwm.c    |   20 ++++++++++----------
>  drivers/gpu/drm/nouveau/nv50_gpio.c      |   16 ++++++++--------
>  drivers/gpu/drm/nouveau/nv50_instmem.c   |   10 +++-------
>  drivers/gpu/drm/nouveau/nvc0_instmem.c   |   10 +++-------
>  drivers/gpu/drm/nouveau/nvd0_gpio.c      |   16 ++++++++--------
>  21 files changed, 129 insertions(+), 114 deletions(-)
> 
> 
> _______________________________________________
> Nouveau mailing list
> Nouveau at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau

Ben Skeggs

2012-May-21 06:27 UTC

head link

[Nouveau] [PATCH 03/14] drm/nouveau/device: Simplify init, fini fuction

On Mon, May 21, 2012 at 12:14:52AM +0100, Emil Velikov
wrote:> Removes unnecessary goto statementI dropped these changes from this patch for the moment, I might want them yet.
> fini subdevices before destroying themI took this hunk, and reworded the commit message to match.
> 
> Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
> ---
>  drivers/gpu/drm/nouveau/nouveau_device.c |   26 +++++++++++++++-----------
>  1 file changed, 15 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nouveau_device.c
b/drivers/gpu/drm/nouveau/nouveau_device.c
> index 9cc21d1..38ed71a 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_device.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_device.c
> @@ -55,13 +55,13 @@ nouveau_device_init(struct nouveau_device *ndev)
>  
>  	for (i = 0; i < NVDEV_SUBDEV_NR; i++) {
>  		ret = nouveau_subdev_init(ndev, i, 0);
> -		if (ret)
> -			goto error;
> +		if (ret) {
> +			for (--i; i >= 0; i--)
> +				nouveau_subdev_fini(ndev, i, false);
> +			break;
> +		}
>  	}
>  
> -error:
> -	for (--i; ret && i >= 0; i--)
> -		nouveau_subdev_fini(ndev, i, false);
>  	return ret;
>  }
>  
> @@ -72,13 +72,13 @@ nouveau_device_fini(struct nouveau_device *ndev, bool
suspend)
>  
>  	for (i = NVDEV_SUBDEV_NR - 1; i >= 0; i--) {
>  		ret = nouveau_subdev_fini(ndev, i, suspend);
> -		if (ret)
> -			goto error;
> +		if (ret) {
> +			for (--i; i >= 0; i--)
> +				nouveau_subdev_init(ndev, i, 0);
> +			break;
> +		}
>  	}
>  
> -error:
> -	for (--i; ret && i >= 0; i--)
> -		nouveau_subdev_init(ndev, i, 0);
>  	return ret;
>  }
>  
> @@ -96,6 +96,7 @@ nouveau_device_create(struct nouveau_device *ndev)
>  {
>  	int disable = nouveau_noaccel;
>  	int ret = 0;
> +	int i;
>  
>  	/* mask out any engines that are known not to work as they should,
>  	 * these can be overridden by the user
> @@ -553,7 +554,10 @@ nouveau_device_create(struct nouveau_device *ndev)
>  		break;
>  	}
>  
> -	if (ret)
> +	if (ret) {
> +		for (i = NVDEV_SUBDEV_NR - 1; i >= 0; i--)
> +			nouveau_subdev_fini(ndev, i, false);
>  		nouveau_device_destroy(ndev);
> +	}
>  	return ret;
>  }
> -- 
> 1.7.10.2
> 
> _______________________________________________
> Nouveau mailing list
> Nouveau at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau

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