[PATCH v3 8/8] drm: Upcast struct drm_device.dev to struct pci_device; replace pdev
Thomas Zimmermann
tzimmermann at suse.de
Thu Jan 7 08:07:48 UTC 2021
We have DRM drivers based on USB, SPI and platform devices. All of them
are fine with storing their device reference in struct drm_device.dev.
PCI devices should be no exception. Therefore struct drm_device.pdev is
deprecated.
Instead upcast from struct drm_device.dev with to_pci_dev(). PCI-specific
code can use dev_is_pci() to test for a PCI device. This patch changes
the DRM core code and documentation accordingly. Struct drm_device.pdev
is being moved to legacy status.
Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Acked-by: Sam Ravnborg <sam at ravnborg.org>
---
drivers/gpu/drm/drm_agpsupport.c | 9 ++++++---
drivers/gpu/drm/drm_bufs.c | 4 ++--
drivers/gpu/drm/drm_edid.c | 7 ++++++-
drivers/gpu/drm/drm_irq.c | 12 +++++++-----
drivers/gpu/drm/drm_pci.c | 26 +++++++++++++++-----------
drivers/gpu/drm/drm_vm.c | 2 +-
include/drm/drm_device.h | 12 +++++++++---
7 files changed, 46 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/drm_agpsupport.c b/drivers/gpu/drm/drm_agpsupport.c
index 4c7ad46fdd21..a4040fe4f4ba 100644
--- a/drivers/gpu/drm/drm_agpsupport.c
+++ b/drivers/gpu/drm/drm_agpsupport.c
@@ -103,11 +103,13 @@ int drm_agp_info_ioctl(struct drm_device *dev, void *data,
*/
int drm_agp_acquire(struct drm_device *dev)
{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+
if (!dev->agp)
return -ENODEV;
if (dev->agp->acquired)
return -EBUSY;
- dev->agp->bridge = agp_backend_acquire(dev->pdev);
+ dev->agp->bridge = agp_backend_acquire(pdev);
if (!dev->agp->bridge)
return -ENODEV;
dev->agp->acquired = 1;
@@ -402,14 +404,15 @@ int drm_agp_free_ioctl(struct drm_device *dev, void *data,
*/
struct drm_agp_head *drm_agp_init(struct drm_device *dev)
{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
struct drm_agp_head *head = NULL;
head = kzalloc(sizeof(*head), GFP_KERNEL);
if (!head)
return NULL;
- head->bridge = agp_find_bridge(dev->pdev);
+ head->bridge = agp_find_bridge(pdev);
if (!head->bridge) {
- head->bridge = agp_backend_acquire(dev->pdev);
+ head->bridge = agp_backend_acquire(pdev);
if (!head->bridge) {
kfree(head);
return NULL;
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index aeb1327e3077..e3d77dfefb0a 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -326,7 +326,7 @@ static int drm_addmap_core(struct drm_device *dev, resource_size_t offset,
* As we're limiting the address to 2^32-1 (or less),
* casting it down to 32 bits is no problem, but we
* need to point to a 64bit variable first. */
- map->handle = dma_alloc_coherent(&dev->pdev->dev,
+ map->handle = dma_alloc_coherent(dev->dev,
map->size,
&map->offset,
GFP_KERNEL);
@@ -556,7 +556,7 @@ int drm_legacy_rmmap_locked(struct drm_device *dev, struct drm_local_map *map)
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
- dma_free_coherent(&dev->pdev->dev,
+ dma_free_coherent(dev->dev,
map->size,
map->handle,
map->offset);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 394cc55b3214..c2bbe7bee7b6 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -32,6 +32,7 @@
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/vga_switcheroo.h>
@@ -2075,9 +2076,13 @@ EXPORT_SYMBOL(drm_get_edid);
struct edid *drm_get_edid_switcheroo(struct drm_connector *connector,
struct i2c_adapter *adapter)
{
- struct pci_dev *pdev = connector->dev->pdev;
+ struct drm_device *dev = connector->dev;
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
struct edid *edid;
+ if (drm_WARN_ON_ONCE(dev, !dev_is_pci(dev->dev)))
+ return NULL;
+
vga_switcheroo_lock_ddc(pdev);
edid = drm_get_edid(connector, adapter);
vga_switcheroo_unlock_ddc(pdev);
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 803af4bbd214..c3bd664ea733 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -122,7 +122,7 @@ int drm_irq_install(struct drm_device *dev, int irq)
dev->driver->irq_preinstall(dev);
/* PCI devices require shared interrupts. */
- if (dev->pdev)
+ if (dev_is_pci(dev->dev))
sh_flags = IRQF_SHARED;
ret = request_irq(irq, dev->driver->irq_handler,
@@ -140,7 +140,7 @@ int drm_irq_install(struct drm_device *dev, int irq)
if (ret < 0) {
dev->irq_enabled = false;
if (drm_core_check_feature(dev, DRIVER_LEGACY))
- vga_client_register(dev->pdev, NULL, NULL, NULL);
+ vga_client_register(to_pci_dev(dev->dev), NULL, NULL, NULL);
free_irq(irq, dev);
} else {
dev->irq = irq;
@@ -203,7 +203,7 @@ int drm_irq_uninstall(struct drm_device *dev)
DRM_DEBUG("irq=%d\n", dev->irq);
if (drm_core_check_feature(dev, DRIVER_LEGACY))
- vga_client_register(dev->pdev, NULL, NULL, NULL);
+ vga_client_register(to_pci_dev(dev->dev), NULL, NULL, NULL);
if (dev->driver->irq_uninstall)
dev->driver->irq_uninstall(dev);
@@ -252,6 +252,7 @@ int drm_legacy_irq_control(struct drm_device *dev, void *data,
{
struct drm_control *ctl = data;
int ret = 0, irq;
+ struct pci_dev *pdev;
/* if we haven't irq we fallback for compatibility reasons -
* this used to be a separate function in drm_dma.h
@@ -262,12 +263,13 @@ int drm_legacy_irq_control(struct drm_device *dev, void *data,
if (!drm_core_check_feature(dev, DRIVER_LEGACY))
return 0;
/* UMS was only ever supported on pci devices. */
- if (WARN_ON(!dev->pdev))
+ if (WARN_ON(!dev_is_pci(dev->dev)))
return -EINVAL;
switch (ctl->func) {
case DRM_INST_HANDLER:
- irq = dev->pdev->irq;
+ pdev = to_pci_dev(dev->dev);
+ irq = pdev->irq;
if (dev->if_version < DRM_IF_VERSION(1, 2) &&
ctl->irq != irq)
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 6dba4b8ce4fe..c7868418e36d 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -65,7 +65,7 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali
return NULL;
dmah->size = size;
- dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size,
+ dmah->vaddr = dma_alloc_coherent(dev->dev, size,
&dmah->busaddr,
GFP_KERNEL);
@@ -88,7 +88,7 @@ EXPORT_SYMBOL(drm_pci_alloc);
*/
void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah)
{
- dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr,
+ dma_free_coherent(dev->dev, dmah->size, dmah->vaddr,
dmah->busaddr);
kfree(dmah);
}
@@ -107,16 +107,18 @@ static int drm_get_pci_domain(struct drm_device *dev)
return 0;
#endif /* __alpha__ */
- return pci_domain_nr(dev->pdev->bus);
+ return pci_domain_nr(to_pci_dev(dev->dev)->bus);
}
int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+
master->unique = kasprintf(GFP_KERNEL, "pci:%04x:%02x:%02x.%d",
drm_get_pci_domain(dev),
- dev->pdev->bus->number,
- PCI_SLOT(dev->pdev->devfn),
- PCI_FUNC(dev->pdev->devfn));
+ pdev->bus->number,
+ PCI_SLOT(pdev->devfn),
+ PCI_FUNC(pdev->devfn));
if (!master->unique)
return -ENOMEM;
@@ -126,12 +128,14 @@ int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p)
{
+ struct pci_dev *pdev = to_pci_dev(dev->dev);
+
if ((p->busnum >> 8) != drm_get_pci_domain(dev) ||
- (p->busnum & 0xff) != dev->pdev->bus->number ||
- p->devnum != PCI_SLOT(dev->pdev->devfn) || p->funcnum != PCI_FUNC(dev->pdev->devfn))
+ (p->busnum & 0xff) != pdev->bus->number ||
+ p->devnum != PCI_SLOT(pdev->devfn) || p->funcnum != PCI_FUNC(pdev->devfn))
return -EINVAL;
- p->irq = dev->pdev->irq;
+ p->irq = pdev->irq;
DRM_DEBUG("%d:%d:%d => IRQ %d\n", p->busnum, p->devnum, p->funcnum,
p->irq);
@@ -159,7 +163,7 @@ int drm_legacy_irq_by_busid(struct drm_device *dev, void *data,
return -EOPNOTSUPP;
/* UMS was only ever support on PCI devices. */
- if (WARN_ON(!dev->pdev))
+ if (WARN_ON(!dev_is_pci(dev->dev)))
return -EINVAL;
if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
@@ -183,7 +187,7 @@ void drm_pci_agp_destroy(struct drm_device *dev)
static void drm_pci_agp_init(struct drm_device *dev)
{
if (drm_core_check_feature(dev, DRIVER_USE_AGP)) {
- if (pci_find_capability(dev->pdev, PCI_CAP_ID_AGP))
+ if (pci_find_capability(to_pci_dev(dev->dev), PCI_CAP_ID_AGP))
dev->agp = drm_agp_init(dev);
if (dev->agp) {
dev->agp->agp_mtrr = arch_phys_wc_add(
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 6d5a03b32238..9b3b989d7cad 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -278,7 +278,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
- dma_free_coherent(&dev->pdev->dev,
+ dma_free_coherent(dev->dev,
map->size,
map->handle,
map->offset);
diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index 283a93ce4617..9d9db178119a 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -290,9 +290,6 @@ struct drm_device {
/** @agp: AGP data */
struct drm_agp_head *agp;
- /** @pdev: PCI device structure */
- struct pci_dev *pdev;
-
#ifdef __alpha__
/** @hose: PCI hose, only used on ALPHA platforms. */
struct pci_controller *hose;
@@ -336,6 +333,15 @@ struct drm_device {
/* Everything below here is for legacy driver, never use! */
/* private: */
#if IS_ENABLED(CONFIG_DRM_LEGACY)
+ /**
+ * @pdev: PCI device structure
+ *
+ * This is deprecated. to get the PCI device, upcast from @dev
+ * with to_pci_dev(). To test if the hardware is a PCI device,
+ * use dev_is_pci() with @dev.
+ */
+ struct pci_dev *pdev;
+
/* Context handle management - linked list of context handles */
struct list_head ctxlist;
--
2.29.2
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