/**
* radeon_driver_load_kms - Main load function for KMS.
*
* @dev: drm dev pointer
* @flags: device flags
*
* This is the main load function for KMS (all asics).
* It calls radeon_device_init() to set up the non-display
* parts of the chip (asic init, CP, writeback, etc.), and
* radeon_modeset_init() to set up the display parts
* (crtcs, encoders, hotplug detect, etc.).
* Returns 0 on success, error on failure.
*/
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r, acpi_status;
rdev = kmalloc(sizeof(struct radeon_device), DRM_MEM_DRIVER,
M_ZERO | M_WAITOK);
if (rdev == NULL) {
return -ENOMEM;
}
dev->dev_private = (void *)rdev;
/* update BUS flag */
if (drm_device_is_agp(dev)) {
DRM_INFO("RADEON_IS_AGP\n");
flags |= RADEON_IS_AGP;
} else if (drm_device_is_pcie(dev)) {
DRM_INFO("RADEON_IS_PCIE\n");
flags |= RADEON_IS_PCIE;
} else {
DRM_INFO("RADEON_IS_PCI\n");
flags |= RADEON_IS_PCI;
}
/* radeon_device_init should report only fatal error
* like memory allocation failure or iomapping failure,
* or memory manager initialization failure, it must
* properly initialize the GPU MC controller and permit
* VRAM allocation
*/
r = radeon_device_init(rdev, dev, flags);
if (r) {
dev_err(dev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
*/
r = radeon_modeset_init(rdev);
if (r)
dev_err(dev->dev, "Fatal error during modeset init\n");
/* Call ACPI methods: require modeset init
* but failure is not fatal
*/
if (!r) {
acpi_status = radeon_acpi_init(rdev);
if (acpi_status)
dev_dbg(dev->dev,
"Error during ACPI methods call\n");
}
out:
if (r)
radeon_driver_unload_kms(dev);
return r;
}
int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
{
device_t root;
int pos;
u32 lnkcap = 0, lnkcap2 = 0;
*mask = 0;
if (!drm_device_is_pcie(dev))
return -EINVAL;
root =
device_get_parent( /* pcib */
device_get_parent( /* `-- pci */
device_get_parent( /* `-- vgapci */
dev->device))); /* `-- drmn */
pos = 0;
pci_find_cap(root, PCIY_EXPRESS, &pos);
if (!pos)
return -EINVAL;
/* we've been informed via and serverworks don't make the cut */
if (pci_get_vendor(root) == PCI_VENDOR_ID_VIA ||
pci_get_vendor(root) == PCI_VENDOR_ID_SERVERWORKS)
return -EINVAL;
lnkcap = pci_read_config(root, pos + PCIER_LINK_CAP, 4);
lnkcap2 = pci_read_config(root, pos + PCIER_LINK_CAP2, 4);
lnkcap &= PCIEM_LINK_CAP_MAX_SPEED;
lnkcap2 &= 0xfe;
#define PCI_EXP_LNKCAP2_SLS_2_5GB 0x02 /* Supported Link Speed 2.5GT/s */
#define PCI_EXP_LNKCAP2_SLS_5_0GB 0x04 /* Supported Link Speed 5.0GT/s */
#define PCI_EXP_LNKCAP2_SLS_8_0GB 0x08 /* Supported Link Speed 8.0GT/s */
if (lnkcap2) { /* PCIE GEN 3.0 */
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 {
if (lnkcap & 1)
*mask |= DRM_PCIE_SPEED_25;
if (lnkcap & 2)
*mask |= DRM_PCIE_SPEED_50;
}
DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", pci_get_vendor(root), pci_get_device(root), lnkcap, lnkcap2);
return 0;
}
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r;
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
return -ENOMEM;
}
dev->dev_private = (void *)rdev;
/* update BUS flag */
if (drm_device_is_agp(dev)) {
flags |= RADEON_IS_AGP;
} else if (drm_device_is_pcie(dev)) {
flags |= RADEON_IS_PCIE;
} else {
flags |= RADEON_IS_PCI;
}
/* radeon_device_init should report only fatal error
* like memory allocation failure or iomapping failure,
* or memory manager initialization failure, it must
* properly initialize the GPU MC controller and permit
* VRAM allocation
*/
r = radeon_device_init(rdev, dev, dev->pdev, flags);
if (r) {
dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
*/
r = radeon_modeset_init(rdev);
if (r)
dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
out:
if (r)
radeon_driver_unload_kms(dev);
return r;
}
