From 93853ea63586d9ecd36366126a5834813f783ee6 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 16 Jul 2021 08:16:34 +0200
Subject: vgaarb: don't pass a cookie to vga_client_register
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: bf44e8cecc03c9c6197c0b65d54703746a62fb35
Patch-mainline: v5.15-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The VGA arbitration is entirely based on pci_dev structures, so just pass
that back to the set_vga_decode callback.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210716061634.2446357-8-hch@lst.de
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 9 ++++----
drivers/gpu/drm/i915/display/intel_vga.c | 7 ++++---
drivers/gpu/drm/nouveau/nouveau_vga.c | 6 +++---
drivers/gpu/drm/radeon/radeon_device.c | 9 ++++----
drivers/gpu/vga/vgaarb.c | 24 +++++++++-------------
drivers/vfio/pci/vfio_pci.c | 11 +++++-----
include/linux/vgaarb.h | 10 ++++-----
7 files changed, 37 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 9f6b9b655294..d2fbf5fe3b4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1266,15 +1266,16 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev)
/**
* amdgpu_device_vga_set_decode - enable/disable vga decode
*
- * @cookie: amdgpu_device pointer
+ * @pdev: PCI device pointer
* @state: enable/disable vga decode
*
* Enable/disable vga decode (all asics).
* Returns VGA resource flags.
*/
-static unsigned int amdgpu_device_vga_set_decode(void *cookie, bool state)
+static unsigned int amdgpu_device_vga_set_decode(struct pci_dev *pdev,
+ bool state)
{
- struct amdgpu_device *adev = cookie;
+ struct amdgpu_device *adev = drm_to_adev(pci_get_drvdata(pdev));
amdgpu_asic_set_vga_state(adev, state);
if (state)
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
@@ -3714,7 +3715,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
/* this will fail for cards that aren't VGA class devices, just
* ignore it */
if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
- vga_client_register(adev->pdev, adev, amdgpu_device_vga_set_decode);
+ vga_client_register(adev->pdev, amdgpu_device_vga_set_decode);
if (amdgpu_device_supports_px(ddev)) {
px = true;
diff --git a/drivers/gpu/drm/i915/display/intel_vga.c b/drivers/gpu/drm/i915/display/intel_vga.c
index f9601d21e641..fa779f7ea415 100644
--- a/drivers/gpu/drm/i915/display/intel_vga.c
+++ b/drivers/gpu/drm/i915/display/intel_vga.c
@@ -124,9 +124,9 @@ intel_vga_set_state(struct drm_i915_private *i915, bool enable_decode)
}
static unsigned int
-intel_vga_set_decode(void *cookie, bool enable_decode)
+intel_vga_set_decode(struct pci_dev *pdev, bool enable_decode)
{
- struct drm_i915_private *i915 = cookie;
+ struct drm_i915_private *i915 = pdev_to_i915(pdev);
intel_vga_set_state(i915, enable_decode);
@@ -139,6 +139,7 @@ intel_vga_set_decode(void *cookie, bool enable_decode)
int intel_vga_register(struct drm_i915_private *i915)
{
+
struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
int ret;
@@ -150,7 +151,7 @@ int intel_vga_register(struct drm_i915_private *i915)
* then we do not take part in VGA arbitration and the
* vga_client_register() fails with -ENODEV.
*/
- ret = vga_client_register(pdev, i915, intel_vga_set_decode);
+ ret = vga_client_register(pdev, intel_vga_set_decode);
if (ret && ret != -ENODEV)
return ret;
diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c
index d071c11249a3..60cd8c0463df 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -11,9 +11,9 @@
#include "nouveau_vga.h"
static unsigned int
-nouveau_vga_set_decode(void *priv, bool state)
+nouveau_vga_set_decode(struct pci_dev *pdev, bool state)
{
- struct nouveau_drm *drm = nouveau_drm(priv);
+ struct nouveau_drm *drm = nouveau_drm(pci_get_drvdata(pdev));
struct nvif_object *device = &drm->client.device.object;
if (drm->client.device.info.family == NV_DEVICE_INFO_V0_CURIE &&
@@ -94,7 +94,7 @@ nouveau_vga_init(struct nouveau_drm *drm)
return;
pdev = to_pci_dev(dev->dev);
- vga_client_register(pdev, dev, nouveau_vga_set_decode);
+ vga_client_register(pdev, nouveau_vga_set_decode);
/* don't register Thunderbolt eGPU with vga_switcheroo */
if (pci_is_thunderbolt_attached(pdev))
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 11e8e42d99b3..cec03238e14d 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1067,15 +1067,16 @@ void radeon_combios_fini(struct radeon_device *rdev)
/**
* radeon_vga_set_decode - enable/disable vga decode
*
- * @cookie: radeon_device pointer
+ * @pdev: PCI device
* @state: enable/disable vga decode
*
* Enable/disable vga decode (all asics).
* Returns VGA resource flags.
*/
-static unsigned int radeon_vga_set_decode(void *cookie, bool state)
+static unsigned int radeon_vga_set_decode(struct pci_dev *pdev, bool state)
{
- struct radeon_device *rdev = cookie;
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ struct radeon_device *rdev = dev->dev_private;
radeon_vga_set_state(rdev, state);
if (state)
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
@@ -1434,7 +1435,7 @@ int radeon_device_init(struct radeon_device *rdev,
/* if we have > 1 VGA cards, then disable the radeon VGA resources */
/* this will fail for cards that aren't VGA class devices, just
* ignore it */
- vga_client_register(rdev->pdev, rdev, radeon_vga_set_decode);
+ vga_client_register(rdev->pdev, radeon_vga_set_decode);
if (rdev->flags & RADEON_IS_PX)
runtime = true;
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 4bde017f6f22..569930552957 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -72,8 +72,7 @@ struct vga_device {
unsigned int io_norm_cnt; /* normal IO count */
unsigned int mem_norm_cnt; /* normal MEM count */
bool bridge_has_one_vga;
- void *cookie;
- unsigned int (*set_vga_decode)(void *cookie, bool decode);
+ unsigned int (*set_decode)(struct pci_dev *pdev, bool decode);
};
static LIST_HEAD(vga_list);
@@ -806,7 +805,7 @@ static void __vga_set_legacy_decoding(struct pci_dev *pdev,
goto bail;
/* don't let userspace futz with kernel driver decodes */
- if (userspace && vgadev->set_vga_decode)
+ if (userspace && vgadev->set_decode)
goto bail;
/* update the device decodes + counter */
@@ -840,12 +839,11 @@ EXPORT_SYMBOL(vga_set_legacy_decoding);
/**
* vga_client_register - register or unregister a VGA arbitration client
* @pdev: pci device of the VGA client
- * @cookie: client cookie to be used in callbacks
- * @set_vga_decode: vga decode change callback
+ * @set_decode: vga decode change callback
*
* Clients have two callback mechanisms they can use.
*
- * @set_vga_decode callback: If a client can disable its GPU VGA resource, it
+ * @set_decode callback: If a client can disable its GPU VGA resource, it
* will get a callback from this to set the encode/decode state.
*
* Rationale: we cannot disable VGA decode resources unconditionally some single
@@ -862,9 +860,8 @@ EXPORT_SYMBOL(vga_set_legacy_decoding);
*
* Returns: 0 on success, -1 on failure
*/
-int vga_client_register(struct pci_dev *pdev, void *cookie,
- unsigned int (*set_vga_decode)(void *cookie,
- bool decode))
+int vga_client_register(struct pci_dev *pdev,
+ unsigned int (*set_decode)(struct pci_dev *pdev, bool decode))
{
int ret = -ENODEV;
struct vga_device *vgadev;
@@ -875,8 +872,7 @@ int vga_client_register(struct pci_dev *pdev, void *cookie,
if (!vgadev)
goto bail;
- vgadev->set_vga_decode = set_vga_decode;
- vgadev->cookie = cookie;
+ vgadev->set_decode = set_decode;
ret = 0;
bail:
@@ -1386,9 +1382,9 @@ static void vga_arbiter_notify_clients(void)
new_state = false;
else
new_state = true;
- if (vgadev->set_vga_decode) {
- new_decodes = vgadev->set_vga_decode(vgadev->cookie,
- new_state);
+ if (vgadev->set_decode) {
+ new_decodes = vgadev->set_decode(vgadev->pdev,
+ new_state);
vga_update_device_decodes(vgadev, new_decodes);
}
}
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 5d9fe4d72ae8..8083f6584040 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -119,10 +119,9 @@ static bool vfio_pci_is_denylisted(struct pci_dev *pdev)
* has no way to get to it and routing can be disabled externally at the
* bridge.
*/
-static unsigned int vfio_pci_set_vga_decode(void *opaque, bool single_vga)
+static unsigned int vfio_pci_set_decode(struct pci_dev *pdev, bool single_vga)
{
- struct vfio_pci_device *vdev = opaque;
- struct pci_dev *tmp = NULL, *pdev = vdev->pdev;
+ struct pci_dev *tmp = NULL;
unsigned char max_busnr;
unsigned int decodes;
@@ -1954,10 +1953,10 @@ static int vfio_pci_vga_init(struct vfio_pci_device *vdev)
if (!vfio_pci_is_vga(pdev))
return 0;
- ret = vga_client_register(pdev, vdev, vfio_pci_set_vga_decode);
+ ret = vga_client_register(pdev, vfio_pci_set_decode);
if (ret)
return ret;
- vga_set_legacy_decoding(pdev, vfio_pci_set_vga_decode(vdev, false));
+ vga_set_legacy_decoding(pdev, vfio_pci_set_decode(pdev, false));
return 0;
}
@@ -1967,7 +1966,7 @@ static void vfio_pci_vga_uninit(struct vfio_pci_device *vdev)
if (!vfio_pci_is_vga(pdev))
return;
- vga_client_register(pdev, NULL, NULL);
+ vga_client_register(pdev, NULL);
vga_set_legacy_decoding(pdev, VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM |
VGA_RSRC_LEGACY_IO |
VGA_RSRC_LEGACY_MEM);
diff --git a/include/linux/vgaarb.h b/include/linux/vgaarb.h
index ea45d3e86fff..b4b9137f9792 100644
--- a/include/linux/vgaarb.h
+++ b/include/linux/vgaarb.h
@@ -51,8 +51,8 @@ void vga_put(struct pci_dev *pdev, unsigned int rsrc);
struct pci_dev *vga_default_device(void);
void vga_set_default_device(struct pci_dev *pdev);
int vga_remove_vgacon(struct pci_dev *pdev);
-int vga_client_register(struct pci_dev *pdev, void *cookie,
- unsigned int (*set_vga_decode)(void *cookie, bool state));
+int vga_client_register(struct pci_dev *pdev,
+ unsigned int (*set_decode)(struct pci_dev *pdev, bool state));
#else /* CONFIG_VGA_ARB */
static inline void vga_set_legacy_decoding(struct pci_dev *pdev,
unsigned int decodes)
@@ -77,8 +77,8 @@ static inline int vga_remove_vgacon(struct pci_dev *pdev)
{
return 0;
}
-static inline int vga_client_register(struct pci_dev *pdev, void *cookie,
- unsigned int (*set_vga_decode)(void *cookie, bool state))
+static inline int vga_client_register(struct pci_dev *pdev,
+ unsigned int (*set_decode)(struct pci_dev *pdev, bool state))
{
return 0;
}
@@ -116,7 +116,7 @@ static inline int vga_get_uninterruptible(struct pci_dev *pdev,
static inline void vga_client_unregister(struct pci_dev *pdev)
{
- vga_client_register(pdev, NULL, NULL);
+ vga_client_register(pdev, NULL);
}
#endif /* LINUX_VGA_H */
--
2.38.1