From: Lucas Kannebley Tavares <luca...@linux.vnet.ibm.com>
This function was more architecture related than drm related, as such it was
moved to the PCI driver.
This patch also allows it to be overwritten by architecture-dependent
implementations, and fixes the radeon driver (only one that uses it).
Signed-off-by: Lucas Kannebley Tavares <luca...@linux.vnet.ibm.com>
---
drivers/gpu/drm/drm_pci.c | 38 -------------------------------
drivers/gpu/drm/radeon/evergreen.c | 5 ++-
drivers/gpu/drm/radeon/r600.c | 5 ++-
drivers/gpu/drm/radeon/rv770.c | 5 ++-
drivers/pci/pci.c | 43 ++++++++++++++++++++++++++++++++++++
include/drm/drmP.h | 6 -----
include/linux/pci.h | 6 +++++
7 files changed, 58 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index bd719e9..ba70844 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -439,44 +439,6 @@ int drm_pci_init(struct drm_driver *driver, struct
pci_driver *pdriver)
return 0;
}
-int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
-{
- struct pci_dev *root;
- u32 lnkcap, lnkcap2;
-
- *mask = 0;
- if (!dev->pdev)
- return -EINVAL;
-
- root = dev->pdev->bus->self;
-
- /* we've been informed via and serverworks don't make the cut */
- if (root->vendor == PCI_VENDOR_ID_VIA ||
- root->vendor == PCI_VENDOR_ID_SERVERWORKS)
- return -EINVAL;
-
- pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
- pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2);
-
- if (lnkcap2) { /* PCIe r3.0-compliant */
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
- *mask |= DRM_PCIE_SPEED_25;
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
- *mask |= DRM_PCIE_SPEED_50;
- if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
- *mask |= DRM_PCIE_SPEED_80;
- } else { /* pre-r3.0 */
- if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB)
- *mask |= DRM_PCIE_SPEED_25;
- if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB)
- *mask |= (DRM_PCIE_SPEED_25 | DRM_PCIE_SPEED_50);
- }
-
- DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor,
root->device, lnkcap, lnkcap2);
- return 0;
-}
-EXPORT_SYMBOL(drm_pcie_get_speed_cap_mask);
-
#else
int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver)
diff --git a/drivers/gpu/drm/radeon/evergreen.c
b/drivers/gpu/drm/radeon/evergreen.c
index 305a657..6ba204d 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -24,6 +24,7 @@
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/pci.h>
#include <drm/drmP.h>
#include "radeon.h"
#include "radeon_asic.h"
@@ -3871,11 +3872,11 @@ void evergreen_pcie_gen2_enable(struct radeon_device
*rdev)
if (ASIC_IS_X2(rdev))
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+ ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
if (ret != 0)
return;
- if (!(mask & DRM_PCIE_SPEED_50))
+ if (!(mask & PCIE_SPEED_50))
return;
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 0740db3..89a7387 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -30,6 +30,7 @@
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <linux/module.h>
+#include <linux/pci.h>
#include <drm/drmP.h>
#include <drm/radeon_drm.h>
#include "radeon.h"
@@ -4371,11 +4372,11 @@ static void r600_pcie_gen2_enable(struct radeon_device
*rdev)
if (rdev->family <= CHIP_R600)
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+ ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
if (ret != 0)
return;
- if (!(mask & DRM_PCIE_SPEED_50))
+ if (!(mask & PCIE_SPEED_50))
return;
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index d63fe1d..81c7f1c 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -28,6 +28,7 @@
#include <linux/firmware.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/pci.h>
#include <drm/drmP.h>
#include "radeon.h"
#include "radeon_asic.h"
@@ -1254,11 +1255,11 @@ static void rv770_pcie_gen2_enable(struct radeon_device
*rdev)
if (ASIC_IS_X2(rdev))
return;
- ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+ ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
if (ret != 0)
return;
- if (!(mask & DRM_PCIE_SPEED_50))
+ if (!(mask & PCIE_SPEED_50))
return;
DRM_INFO("enabling PCIE gen 2 link speeds, disable with
radeon.pcie_gen2=0\n");
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b099e00..ebf130c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3931,6 +3931,49 @@ static int __init pci_setup(char *str)
}
early_param("pci", pci_setup);
+int __weak pcibios_get_speed_cap_mask(struct pci_dev *dev, u32 *mask)
+{
+ struct pci_dev *root;
+ u32 lnkcap, lnkcap2;
+
+ *mask = 0;
+ if (!dev)
+ return -EINVAL;
+
+ root = dev->bus->self;
+
+ /* we've been informed via and serverworks don't make the cut */
+ if (root->vendor == PCI_VENDOR_ID_VIA ||
+ root->vendor == PCI_VENDOR_ID_SERVERWORKS)
+ return -EINVAL;
+
+ pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
+ pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2);
+
+ if (lnkcap2) { /* PCIe r3.0-compliant */
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
+ *mask |= PCIE_SPEED_25;
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
+ *mask |= PCIE_SPEED_50;
+ if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
+ *mask |= PCIE_SPEED_80;
+ } else { /* pre-r3.0 */
+ if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB)
+ *mask |= PCIE_SPEED_25;
+ if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB)
+ *mask |= (PCIE_SPEED_25 | PCIE_SPEED_50);
+ }
+
+ dev_info(&dev->dev, "probing gen 2 caps for device %x:%x = %x/%x\n",
+ root->vendor, root->device, lnkcap, lnkcap2);
+ return 0;
+}
+
+int pcie_get_speed_cap_mask(struct pci_dev *dev, u32 *mask) {
+ return pcibios_get_speed_cap_mask(dev, mask);
+}
+EXPORT_SYMBOL(pcie_get_speed_cap_mask);
+
EXPORT_SYMBOL(pci_reenable_device);
EXPORT_SYMBOL(pci_enable_device_io);
EXPORT_SYMBOL(pci_enable_device_mem);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 2d94d74..39b2872 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1788,12 +1788,6 @@ extern int drm_get_pci_dev(struct pci_dev *pdev,
const struct pci_device_id *ent,
struct drm_driver *driver);
-#define DRM_PCIE_SPEED_25 1
-#define DRM_PCIE_SPEED_50 2
-#define DRM_PCIE_SPEED_80 4
-
-extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32
*speed_mask);
-
/* platform section */
extern int drm_platform_init(struct drm_driver *driver, struct platform_device
*platform_device);
extern void drm_platform_exit(struct drm_driver *driver, struct
platform_device *platform_device);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 2461033a..24a2f63 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1861,4 +1861,10 @@ static inline struct eeh_dev *pci_dev_to_eeh_dev(struct
pci_dev *pdev)
*/
struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
+#define PCIE_SPEED_25 1
+#define PCIE_SPEED_50 2
+#define PCIE_SPEED_80 4
+
+extern int pcie_get_speed_cap_mask(struct pci_dev *dev, u32 *speed_mask);
+
#endif /* LINUX_PCI_H */
--
1.7.4.4
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